Frequently Asked Questions
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Two main types occur. Internal hernias happen after gastric bypass when the small intestine slips through spaces in the mesentery created by rerouting the bowel; rapid loss of abdominal fat makes those spaces larger. They can cause intermittent cramping pain and, if the bowel twists, a surgical emergency. Closing these mesenteric defects at the time of bypass reduces the risk, which is why Dr. de la Cruz-Muñoz closes them routinely. Incisional or port-site hernias can also form at incision sites. Any severe or recurring abdominal pain after bypass should be evaluated promptly.
An internal hernia occurs when a loop of small intestine slips through a gap in the mesentery — the tissue that holds the intestine — created when the bowel is rerouted during gastric bypass. As patients lose abdominal fat, these gaps can enlarge. Internal hernias can cause intermittent pain or a dangerous bowel obstruction. Closing the defects during the bypass reduces the risk, and Dr. de la Cruz-Muñoz closes them routinely.
Internal hernias typically cause episodes of cramping pain, often in the upper or left abdomen, that may come and go after meals, along with nausea, bloating and sometimes vomiting. Pain may be worse after eating and relieved by lying still. If the bowel becomes trapped, pain becomes severe and constant — a surgical emergency. CT scans can appear normal between episodes, so persistent symptoms may warrant diagnostic laparoscopy.
In most cases, yes. Repair of a ventral, incisional or recurrent hernia is considered medically necessary when the hernia causes pain, limits activity, or risks incarceration, and most plans cover it subject to your deductible and coinsurance. Many insurers require prior authorization, and some components — such as removing excess skin at the same time — may be considered cosmetic and covered differently. Our office verifies your benefits and obtains any needed authorization before surgery.
A gastric GIST is a gastrointestinal stromal tumor that grows from the wall of the stomach — the most common location for these tumors. GISTs arise from specialized pacemaker cells in the gut wall and are often found incidentally during endoscopy or imaging, or because of bleeding, anemia or abdominal discomfort. Small gastric GISTs are usually low risk. Treatment of most GISTs is surgical removal with clear margins, often laparoscopically or robotically, and higher-risk tumors may receive imatinib.
Gastrointestinal stromal tumors (GISTs) are considered to have malignant potential, but their behavior varies widely. Risk is estimated from the tumor's size, how quickly its cells divide (mitotic rate), and where it is located — small stomach GISTs under 2 cm are usually low risk, while large tumors or those in the small intestine are more likely to recur or spread. Surgical removal with clear margins is the main treatment for localized GISTs, and higher-risk tumors are often treated with the targeted drug imatinib after surgery.
Yes. Most reflux is a nuisance, but chronic, untreated GERD can cause erosive esophagitis, ulcers and bleeding, scarring that narrows the esophagus (strictures), chronic cough and throat problems, and Barrett's esophagus — the precursor to esophageal adenocarcinoma. Warning signs that need prompt evaluation include trouble swallowing, food sticking, weight loss, vomiting blood, black stools and anemia. People with long-standing reflux and risk factors should talk with their doctor about an endoscopy, and those whose reflux is not controlled by medication may benefit from anti-reflux surgery.
In many cases, yes. When Barrett's has dysplasia (precancerous changes), endoscopic eradication therapy — usually radiofrequency ablation, with endoscopic resection of any visible lesion — removes the abnormal tissue. In a landmark randomized trial, ablation eliminated dysplasia in about 90% of patients with low-grade dysplasia and 81% with high-grade dysplasia (Shaheen et al., New England Journal of Medicine, 2009). For Barrett's without dysplasia, ablation is generally not recommended; instead, reflux control and surveillance endoscopy are the standard. Anti-reflux surgery controls reflux but does not reliably make Barrett's disappear.
An esophageal stricture is a narrowing of the esophagus that makes it hard for food to pass. Most are caused by scarring from long-standing acid reflux (peptic strictures). Other causes include Schatzki rings, eosinophilic esophagitis, pill or caustic injury, radiation, surgical connections and, less often, cancer. The main symptom is gradually worsening difficulty swallowing solid foods. Strictures are diagnosed with endoscopy and treated with dilation, along with treatment of the underlying cause.
Gastroparesis is a condition in which the stomach empties too slowly even though nothing is blocking it. It is usually caused by damage to the nerves or muscles that control stomach contractions, most commonly from diabetes, prior surgery or an unknown cause. The result is nausea, vomiting, early fullness, bloating and sometimes weight loss and malnutrition. Treatment includes diet changes, medications and, for severe cases, procedures such as G-POEM, pyloroplasty or gastric stimulation.
Gastroparesis — delayed stomach emptying without a blockage — most often results from long-standing diabetes, which damages the nerves that control stomach muscles. Other causes include prior surgery on the stomach or esophagus that injured the vagus nerve, viral infections, certain medications (including opioids and GLP-1 medications), and neurological or autoimmune conditions. In many patients no cause is found, which is called idiopathic gastroparesis.
Common symptoms include nausea, vomiting (sometimes of food eaten hours earlier), feeling full after only a few bites, bloating and upper abdominal pain. Many patients lose weight or have trouble keeping blood sugar steady because food is absorbed unpredictably. Symptoms often worsen after fatty or high-fiber meals. Because these symptoms overlap with ulcers, gallbladder disease and functional dyspepsia, testing is needed to confirm the diagnosis.
The key test is a gastric emptying study, in which you eat a meal containing a small amount of tracer and imaging measures how quickly it leaves the stomach over four hours. An upper endoscopy is done first to make sure there is no blockage, such as an ulcer or narrowing. Additional tests may include blood work, CT imaging and, in some centers, wireless motility capsules. Medications that slow emptying should be stopped before testing when possible.
Treatment usually begins with diet changes — small, frequent, low-fat and low-fiber meals, with more liquids or purees — along with blood sugar control in diabetic patients and stopping medications that slow emptying. Medications can improve emptying (such as metoclopramide) and control nausea. For severe or refractory cases, options include pyloric botulinum toxin, endoscopic pyloromyotomy (G-POEM), surgical pyloroplasty, gastric electrical stimulation, feeding tubes and, in selected cases, other surgery.
Often, yes. Metabolic syndrome is a cluster of abdominal obesity, high blood pressure, high blood sugar, high triglycerides and low HDL cholesterol. Because these problems are driven largely by excess visceral fat and insulin resistance, meaningful weight loss improves every component. Lifestyle changes help, modern medications add more, and bariatric surgery resolves metabolic syndrome in a large majority of patients. Even a 5–10% weight loss produces measurable improvements in blood pressure, glucose and lipids.
Patients travel for an experienced, high-volume bariatric program with advanced minimally invasive techniques, the full range of primary and revisional operations, and structured long-term care. The Miami Bariatric Destination Program makes the process practical: virtual consultations, local pre-operative testing, a short stay in Miami for surgery, and virtual follow-up after returning home. Dr. Nestor de la Cruz-Muñoz has performed more than 9,000 bariatric operations in over 25 years — a volume few surgeons reach.
Plan to stay in Miami for approximately one week. That allows time for final pre-operative visits, surgery and a short hospital stay, and your first post-operative check before you travel home. Your team will confirm your exact schedule when surgery is booked.
Yes. Most patients can safely fly home 7 days after surgery. By this time, hydration is stable, pain is controlled, and early healing is complete. Walking during travel and staying hydrated are essential. Our team provides detailed travel instructions before you leave Miami.
Most can. The surgical consultation, nutrition counseling, psychological evaluation and pre-operative education can usually be done virtually. Testing such as blood work, EKG and imaging is done locally. An in-person visit is scheduled shortly before surgery.
We recommend staying within 10–15 minutes of our surgical center. Popular areas include Brickell, Coral Gables, Coconut Grove, and Downtown Miami. Choose a hotel with elevator access, a refrigerator, and nearby pharmacy options to make recovery easier. Ask us for our latest list of hotels that we have relationships with.
Yes — we offer virtual check-ins, education, and care coordination.
The program accepts major insurers and works directly with your plan to determine coverage and obtain authorization. Coverage depends on your specific policy and whether bariatric surgery is included, and out-of-network rules may apply when you travel. The office verifies your benefits before you commit to travel and explains any out-of-pocket costs or self-pay options.
Yes. Bring someone who can stay with you for at least the first 24–48 hours after discharge, and ideally the first several days. A support person helps you get to appointments, reminds you to sip fluids and take medications, prepares liquids and soft foods, and watches for warning signs. Emotional support matters too during the early adjustment.
Call the office anytime. You will receive contact numbers for business hours and after-hours concerns before discharge. No question is too small in the early weeks — especially about fluids, pain, nausea, medications or wound care. For emergencies such as chest pain, severe shortness of breath or vomiting blood, call 911 first.
Patients travel for an experienced, high-volume bariatric program with advanced minimally invasive techniques, the full range of primary and revisional operations, and structured long-term care. The Miami Bariatric Destination Program makes the process practical: virtual consultations, local pre-operative testing, a short stay in Miami for surgery, and virtual follow-up after returning home. Dr. Nestor de la Cruz-Muñoz has performed more than 9,000 bariatric operations in over 25 years — a volume few surgeons reach.
Plan to stay in Miami for approximately one week. That allows time for final pre-operative visits, surgery and a short hospital stay, and your first post-operative check before you travel home. Your team will confirm your exact schedule when surgery is booked.
Yes. Most patients can safely fly home 7 days after surgery. By this time, hydration is stable, pain is controlled, and early healing is complete. Walking during travel and staying hydrated are essential. Our team provides detailed travel instructions before you leave Miami.
Dr. Nestor de la Cruz-Muñoz's bariatric surgery program in Miami combines high-volume surgical experience with advanced laparoscopic and robotic techniques, the full range of primary and revisional operations, and comprehensive metabolic care before and after surgery. A multidisciplinary team — nutrition, medical weight management and follow-up support — helps patients through every stage, and a dedicated program supports patients traveling from outside Miami. Dr. de la Cruz-Muñoz has performed more than 9,000 bariatric operations in over 25 years — a volume few surgeons reach.
Dr. Nestor de la Cruz-Muñoz has over 25 years of bariatric surgery experience in Miami. He has performed more than 9,000 bariatric operations — including sleeve gastrectomies, gastric bypasses, SADI-S and duodenal switch operations, and revisional procedures — a volume few surgeons reach, and over 15,000 minimally invasive procedures overall. He is board-certified in surgery and obesity medicine, served for 10 years as a bariatric surgery fellowship program director, and has published extensively on bariatric outcomes, including a large study of adolescent bariatric surgery. That depth of experience matters most for complex cases, such as revisions and patients with significant reflux or prior abdominal surgery.
Yes. Bariatric operations are performed with laparoscopic or robotic techniques through small incisions. Compared with open surgery, minimally invasive surgery reduces pain, wound complications and hernias and shortens hospital stays and recovery. The choice between laparoscopic and robotic approaches depends on the operation and your anatomy; both offer excellent results in experienced hands.
Patients choose an experienced, high-volume bariatric program in Miami for its surgical expertise, full range of procedures — including complex revisions — and comprehensive metabolic care. A dedicated program for out-of-town patients coordinates virtual visits, travel planning and follow-up, so patients from other states and countries can receive care with fewer trips.
Yes. Patients come from Miami-Dade, Broward and Palm Beach counties as well as Orlando, Tampa, Jacksonville and across the state. Out-of-area patients can start with a virtual consultation, complete many pre-operative steps closer to home, travel to Miami for surgery, and continue much of their follow-up virtually.
Yes. You can complete your initial consultation by video, including a review of your medical history, discussion of procedure options, surgical planning and insurance verification. Many pre-operative steps, such as nutrition visits, can also be done virtually, and some testing can be arranged close to home. An in-person visit is scheduled before surgery. Virtual care is especially helpful for patients who live outside Miami.
There is no single best operation. The choice depends on your BMI, whether you have reflux or a hiatal hernia, how severe your diabetes is, your eating patterns, prior surgeries and long-term goals. Sleeve gastrectomy and gastric bypass are the most common procedures. Gastric bypass is preferred for significant reflux. SADI-S and duodenal switch offer the greatest weight loss and diabetes control for higher BMIs, with a greater need for vitamin monitoring. Your surgeon will recommend the best fit after a full evaluation.
Yes. Many insurance plans in Florida cover bariatric surgery when you meet their criteria, including Medicare and many commercial and employer-sponsored plans. Coverage depends on your specific policy — some employers exclude weight-loss surgery — and most plans require documentation such as BMI history, related health conditions, nutrition visits and medical clearance. Our office verifies your benefits and helps you complete the requirements for approval.
Many Miami patients can schedule surgery within about four to eight weeks of their consultation, depending mainly on insurance requirements and medical clearance. Some plans require a supervised diet program, nutrition visits or a psychological evaluation before approval, which can take longer. Self-pay patients and those who complete testing quickly may move faster. Our team guides you through each requirement to avoid unnecessary delays.
Most patients stay in the hospital one night after a sleeve or gastric bypass and return to light daily activity within a week. Many people return to desk work in one to two weeks, while physically demanding jobs may require four to six weeks. Walking begins on the day of surgery, and full exercise usually resumes at four to six weeks. The diet progresses from liquids to pureed and soft foods before regular textures at about six to eight weeks.
Yes. Revisional bariatric surgery is a major focus of the practice. Common reasons include weight regain or inadequate weight loss, severe reflux after a sleeve, marginal ulcers, strictures, band complications and nutritional problems. Options range from endoscopic revision to conversion to gastric bypass, SADI-S, duodenal switch or MagDI. Each plan starts with a thorough evaluation of your anatomy and history.
Patients receive structured long-term care: nutrition counseling through each diet stage, vitamin and supplement protocols, regular follow-up visits — many of which can be virtual — exercise guidance, and annual lab monitoring for deficiencies. The team also watches for and manages problems such as reflux, ulcers, strictures or weight regain. Lifelong follow-up is one of the strongest predictors of long-term success after bariatric surgery.
Yes. The program offers medical weight-loss treatment, including GLP-1 medications such as semaglutide and tirzepatide, for patients who are not ready for surgery, who need help reaching a surgical weight goal, or who need extra support after surgery for weight regain or a plateau. Medication and surgery can work together. Treatment includes monitoring for side effects and attention to protein intake and muscle preservation.
Yes. The Miami program provides bilingual care in English and Spanish, including consultations, nutrition visits, education and postoperative follow-up. Having your questions answered in your preferred language helps you understand each step, follow your diet and vitamin plan, and recognize warning signs after surgery. Family members are welcome to join visits to help with support.
The first step is a consultation, either in person in Miami or virtually. During the visit, Dr. de la Cruz-Muñoz reviews your medical history, prior weight-loss attempts, current conditions such as diabetes or reflux, and your goals. You will discuss which procedure fits you best, the testing needed before surgery, and your insurance requirements. Many patients begin the nutrition and medical clearance steps right after the first visit. Dr. de la Cruz-Muñoz has performed more than 9,000 bariatric operations over more than 25 years — a volume few surgeons reach.
Yes — lifelong supplementation is recommended. Even though the sleeve does not bypass the intestine, eating smaller amounts and having less stomach acid reduce absorption of iron, vitamin B12, calcium and vitamin D. A typical regimen includes a bariatric multivitamin, calcium citrate with vitamin D and B12, with iron as needed. Annual labs check for deficiencies.
Sleeve gastrectomy removes about 75–80% of the stomach, leaving a narrow, banana-shaped tube. The smaller stomach holds less food, and removing the upper stomach lowers levels of ghrelin, the hunger hormone, which reduces appetite. It does not reroute the intestines. The sleeve is the most commonly performed bariatric operation worldwide, offers strong weight loss and improvement in diabetes, and requires lifelong vitamins. It can worsen reflux in some patients.
An experienced, high-volume program offers minimally invasive sleeve gastrectomy with careful evaluation for reflux and hiatal hernia beforehand — the main factors that determine whether a sleeve or bypass is the better choice. The program also handles the full range of sleeve revisions if they are ever needed, along with long-term nutrition follow-up and virtual care for out-of-town patients. Dr. de la Cruz-Muñoz has performed more than 9,000 bariatric operations over more than 25 years — a volume few surgeons reach.
Most patients lose about 60–70% of their excess weight within 12–18 months. Results depend on starting weight, adherence to nutrition and activity plans, and metabolic factors. Some patients regain part of the weight over the long term; follow-up and, when needed, medications or revision surgery help address that. Your surgeon can give a personalized estimate and compare the sleeve with other options.
Yes. Many patients see major improvements in blood sugar control after a sleeve gastrectomy, and some achieve diabetes remission, particularly when diabetes is of shorter duration and insulin is not yet needed. The sleeve lowers hunger hormones and increases GLP-1, improving insulin sensitivity as weight is lost. Gastric bypass and duodenal switch generally produce higher remission rates for more advanced diabetes.
Yes. Many Florida insurance plans cover sleeve gastrectomy when you meet their criteria, including Medicare, Medicaid and many commercial plans. Coverage varies by policy, and some employers exclude bariatric surgery. Most plans require documentation of BMI and related conditions, nutrition visits and medical clearance. Our office verifies your benefits and helps you complete requirements for approval.
Most patients spend one night in the hospital and return to normal daily activities within one to two weeks. Many go back to desk work in one to two weeks, while physical jobs may need four to six weeks. Structured exercise typically begins at four to six weeks. The diet progresses from clear liquids to protein shakes, pureed and soft foods, reaching regular textures at about six to eight weeks.
Yes. A sleeve creates a higher-pressure stomach tube, and some patients develop new reflux or find existing reflux worsens after surgery. Over time, some develop erosive esophagitis or Barrett's esophagus, sometimes without heartburn symptoms. That is why patients with significant reflux or a large hiatal hernia are often better served by gastric bypass, and why periodic endoscopy may be recommended after a sleeve. Reflux after a sleeve can be treated with medication or conversion to bypass.
Yes. You can complete your initial gastric sleeve consultation virtually, including a review of your medical history, a discussion of whether the sleeve is right for you — particularly if you have reflux — surgical planning and insurance verification. Many pre-operative steps can also be completed remotely before you come to Miami for surgery.
Most patients describe sleeve gastrectomy pain as mild to moderate, similar to muscle soreness or pressure under the ribs. The discomfort comes from the laparoscopic incisions and the stomach reshaping—not from large cuts or internal rerouting. Pain improves significantly within 48–72 hours and is usually well‑controlled with non‑opioid medications. Walking every hour reduces gas pressure and speeds recovery.
Sleeve gastrectomy is considered safe and is the most common bariatric operation worldwide, but like any surgery it has risks. The most serious early risk is a staple-line leak (about 1–7%); others include bleeding, blood clots, and narrowing (stricture). The most common long-term issue is acid reflux, affecting about 20–30% of patients and usually controlled with medication. Vitamin and mineral deficiencies are less common than after gastric bypass but require lifelong supplements (Elmaleh-Sachs et al., JAMA, 2023; Nuzzo et al., Lancet Gastroenterology & Hepatology, 2021).
Most patients stay in the hospital 1–2 days and recover quickly. Diet advances in stages: liquids for about the first 1–2 weeks, pureed foods for weeks 2–4, soft foods for weeks 4–6, and regular textured foods from about week 6. Many people drive again around 5 days and return to work within about 2 weeks, with a gradual return to heavy exercise and lifting at about 6 weeks. Lifelong vitamins, high-protein nutrition, and scheduled follow-up visits are key to long-term success (Awad, Handbook of Metabolic and Bariatric Surgery, 2022).
Yes. Sleeve gastrectomy is one of the safest bariatric procedures, with low rates of serious complications when performed by an experienced surgeon at an accredited center. Possible risks include bleeding, leaks along the staple line, blood clots and, later, reflux, strictures and nutritional deficiencies. Overall, the risk of serious complications is similar to common operations such as gallbladder removal, and the health risks of untreated severe obesity are generally greater.
Most patients go home after one night and return to normal daily activities within one to two weeks. Desk work usually resumes in one to two weeks and physical work in four to six weeks. Expect fatigue early on as your body adjusts to fewer calories; meeting your protein and fluid goals helps. Structured exercise usually begins at four to six weeks.
In selected cases, yes. The most common example is removing a gastric band and converting to a sleeve gastrectomy, in one operation or in two stages depending on the condition of the stomach. Converting a gastric bypass to a sleeve is uncommon and technically complex. Whether a sleeve is the right revision depends on your anatomy, reflux and the reason for revision; a gastric bypass is often preferred when reflux is present.
Roux-en-Y gastric bypass creates a small stomach pouch and connects it directly to the small intestine, bypassing the rest of the stomach and the first part of the intestine. The smaller pouch limits portions, and the rerouting changes gut hormones that control hunger, fullness and blood sugar. Gastric bypass produces substantial, durable weight loss, high rates of diabetes remission and excellent reflux control. It requires lifelong vitamins and avoidance of NSAIDs and nicotine.
An experienced, high-volume program offers minimally invasive gastric bypass, strong outcomes for diabetes and reflux, and the ability to manage complex situations such as revisions from a band or sleeve. Routine closure of mesenteric defects to reduce internal hernia risk, structured long-term nutrition follow-up and virtual visits for out-of-town patients round out the care. Dr. de la Cruz-Muñoz has performed more than 9,000 bariatric operations over more than 25 years — a volume few surgeons reach.
Most patients lose about 65–80% of their excess weight within 12–18 months, and long-term studies show durable results for most patients when combined with healthy habits and follow-up. Gastric bypass also produces high rates of type 2 diabetes remission and is the preferred operation for patients with significant reflux. Individual results depend on starting weight, health conditions, activity and nutrition.
Yes. Gastric bypass is generally the preferred bariatric operation for patients with reflux, because the small pouch makes little acid and bile is diverted away from the esophagus. Sleeve gastrectomy, in contrast, can worsen existing reflux or cause new reflux in some patients. For patients with significant reflux, a hiatal hernia or Barrett's esophagus, bypass is usually recommended, and patients with reflux after a sleeve often do well with conversion to bypass.
Yes. Gastric bypass is one of the most effective treatments for type 2 diabetes. Blood sugar often improves within days — before major weight loss — because of changes in gut hormones such as GLP-1 and improved insulin sensitivity. In randomized trials, bypass achieved much higher rates of diabetes control and remission than medication alone (Schauer et al., New England Journal of Medicine, 2017). Remission is most likely for patients with shorter disease duration who are not yet on insulin.
Yes. Many Florida insurance plans cover gastric bypass when you meet their criteria, including Medicare, Medicaid and many commercial insurers. Coverage depends on your specific policy — some employer plans exclude bariatric surgery — and most require documentation such as BMI history, related conditions, nutrition visits and medical clearance. Our office verifies your benefits and guides you through prior authorization.
Most patients spend one night in the hospital and return to normal daily activities within one to two weeks. Desk work usually resumes in one to two weeks, while physical jobs may need four to six weeks. Walking starts on the day of surgery, and structured exercise typically begins at four to six weeks with your surgeon's approval. The diet progresses from liquids to pureed and soft foods before regular textures at about six to eight weeks.
Yes. You can complete your initial gastric bypass consultation virtually, including a review of your medical history, discussion of whether bypass is the best fit — for example, if you have reflux or diabetes — surgical planning and insurance verification. Many pre-operative steps, such as nutrition visits, can also be done remotely, which makes the process easier for busy and out-of-town patients.
Gastric bypass is a very powerful bariatric procedure for diabetes improvement. Many patients experience immediate normalization of blood sugar within days due to hormonal changes, even before significant weight loss occurs. While not every patient achieves full remission, most see dramatic reductions in medications, improved A1c, and long‑term metabolic stability.
Yes. Roux-en-Y gastric bypass has more than 50 years of data behind it, and the risk of death is very low when it is performed at experienced, accredited centers.
Possible long-term issues include marginal ulcers, internal hernias, dumping syndrome and vitamin deficiencies. Most can be prevented or treated with lifelong vitamins, avoiding smoking and anti-inflammatory pain relievers, and staying in regular follow-up.
Most patients go home the day after surgery and return to normal daily activities within one to two weeks. Desk work often resumes in one to two weeks and physical work in four to six weeks. You will advance from liquids to soft foods over several weeks and can begin structured exercise at about four to six weeks. Fatigue in the first weeks is normal and improves as you meet protein and fluid goals.
Yes — lifelong supplementation is required. After gastric bypass, iron, vitamin B12, calcium and vitamin D are absorbed less effectively because food bypasses the lower stomach and duodenum. A typical regimen includes a bariatric multivitamin, calcium citrate with vitamin D, B12 (oral, sublingual or injection) and iron as needed. Annual labs — more often in the first year — check for deficiencies before they cause symptoms.
Yes. Gastric bypass is one of the most common revisional operations. A sleeve gastrectomy is often converted to bypass for severe reflux, weight regain or Barrett's esophagus, and a gastric band can be removed and converted to bypass in one or two stages. Revisions are more complex than first-time surgery, so evaluation with endoscopy and imaging and an experienced revisional surgeon are important.
The duodenal switch combines a sleeve gastrectomy with a rerouting of the small intestine. The stomach is reduced to a sleeve, the duodenum is divided just past the stomach, and it is connected to a lower section of intestine, so food bypasses much of the small bowel and mixes with digestive juices only in a short common channel. This produces the greatest weight loss and diabetes remission of any bariatric procedure, along with the highest need for vitamin and protein monitoring.
The duodenal switch is one of the most technically demanding bariatric operations, and fewer surgeons perform it. Choosing an experienced, high-volume program matters for both the operation and the lifelong nutritional follow-up it requires. The Miami program offers minimally invasive DS and SADI-S, revisions to DS from a sleeve or band, and structured nutrition monitoring, with virtual visits that make care practical for out-of-town patients. Dr. de la Cruz-Muñoz has performed more than 9,000 bariatric operations over more than 25 years — a volume few surgeons reach.
Yes. The duodenal switch has the highest rates of type 2 diabetes remission of any bariatric procedure, thanks to its combination of weight loss, reduced absorption and powerful changes in gut hormones and insulin sensitivity. Many patients stop diabetes medications within weeks to months. It is particularly considered for patients with severe obesity and advanced or long-standing diabetes, while weighing its greater nutritional demands.
The duodenal switch is often recommended for patients with a very high BMI (typically 50 or more), those with severe or long-standing type 2 diabetes, and patients who have regained weight after a sleeve gastrectomy. Good candidates are committed to lifelong vitamin supplements, adequate protein and regular lab follow-up. It is generally not the best choice for patients with significant reflux or chronic diarrhea. SADI-S, a simplified version, may be considered for similar goals.
Yes. Because fat absorption is reduced, patients need higher doses of the fat-soluble vitamins A, D, E and K, along with a bariatric multivitamin, calcium citrate, iron and B12 as needed, and close attention to protein intake. Deficiencies in zinc, copper and selenium are also more common and are checked with regular labs. Skipping supplements after DS can lead to bone loss, night blindness, nerve problems and hair loss, so adherence is essential.
Many Florida insurance plans cover duodenal switch when you meet their bariatric criteria, though some require additional documentation because of its complexity and nutritional requirements. Coverage depends on your specific policy, and some employers exclude bariatric surgery altogether. Our office verifies your benefits, explains requirements such as nutrition visits and medical clearance, and handles prior authorization.
Yes. You can complete your duodenal switch consultation by video, including a review of your medical history, discussion of whether DS or SADI-S is right for you, surgical planning and insurance verification. Because DS requires careful lifelong nutritional follow-up, the visit also covers vitamin needs and lab monitoring. Much of the pre-operative process can be completed remotely before you travel to Miami for surgery.
Yes, in experienced hands. The duodenal switch is the most powerful bariatric operation, producing the most weight loss and the highest rates of diabetes remission.
It has a somewhat higher risk of nutritional deficiencies than other procedures, so lifelong vitamin and mineral supplements and regular lab monitoring are essential. It is best suited to patients with very high BMIs or severe metabolic disease who are committed to long-term follow-up.
Most patients stay in the hospital one to two nights and return to normal daily activities within two to three weeks. Desk work typically resumes in two to three weeks, physical jobs in about six weeks, and full exercise in four to six weeks. The diet advances from liquids to soft foods over several weeks. Starting vitamins, protein supplements and hydration habits early helps recovery go smoothly.
DS offers the greatest long term fat loss of any bariatric procedure.
It depends on your goals and health. The duodenal switch produces the most weight loss and diabetes remission, but it requires more intensive lifelong nutritional monitoring and can cause more frequent bowel movements. Sleeve gastrectomy is simpler, and gastric bypass is preferred for reflux. For patients with a very high BMI or severe diabetes, DS or SADI-S may be the best option. Your surgeon will help you weigh the benefits and trade-offs based on your anatomy and medical history.
Bariatric revision surgery corrects problems after a previous weight-loss operation, such as weight regain, inadequate weight loss, severe reflux, ulcers, strictures, band complications or malnutrition. It can involve converting to a different operation — for example, sleeve to gastric bypass or SADI-S — adjusting an existing bypass, or endoscopic tightening. The right option depends on the problem and your anatomy.
Dr. de la Cruz-Muñoz offers the full range of metabolic and bariatric procedures in Miami, including sleeve gastrectomy, Roux-en-Y gastric bypass, one anastomosis gastric bypass (OAGB), SADI-S, duodenal switch and MagDI with sleeve.
The practice also offers revisional surgery for weight regain or complications, endoscopic options such as endoscopic sleeve gastroplasty, transoral outlet reduction (TORe) and gastric balloons, and a medical weight loss program. Most operations are performed with minimally invasive or robotic techniques.
It depends on your insurance plan. HMO plans usually require a referral from your primary care physician before you see a specialist, while most PPO plans and traditional Medicare do not.
Our team will check your specific plan when you call and let you know whether a referral is needed, so your consultation is not delayed.
Call our office at 305-692-0392, Monday through Friday, 8:30 AM to 5:00 PM, or use the Book Now button on this site. Consultations are available in person at our Miami office and virtually for out-of-town patients.
Before your visit, our team will verify your insurance benefits so you know what your plan covers before you begin any pre-operative requirements.
We regularly care for patients who travel from Puerto Rico. Most start with a virtual consultation, followed by insurance verification and pre-operative testing, much of which can often be coordinated close to home.
Patients then travel for surgery and typically stay about 7 to 9 days in Miami after surgery before flying home. Follow-up continues through virtual visits, with in-person visits as needed. Our team helps coordinate each step, and our Out-of-Town Patient Guide explains the process in detail. Call 305-692-0392 to get started.
SADI-S bypasses the duodenum and upper small intestine, so lifelong deficiencies of fat-soluble vitamins (A, D, E, K), iron, calcium, B12, folate, and zinc are possible, along with a 3–10% risk of protein-calorie malnutrition depending on common-channel length — which is why strict supplementation and monitoring are mandatory (Ponce de Leon-Ballesteros et al., Obesity Surgery, 2024; Noel et al., J Laparoendosc Adv Surg Tech, 2026). SADI-S does not reliably fix reflux, so patients with significant GERD are generally better served by a gastric bypass instead (Barajas-Gamboa et al., Surgical Endoscopy, 2023).
A MagDI (magnetic duodeno-ileostomy) creates the same kind of malabsorptive duodeno-ileal bypass as a SADI-S, but instead of cutting and stapling the bowel, it uses two magnets placed endoscopically and aligned laparoscopically to form a sutureless side-to-side anastomosis that develops gradually over several weeks, after which the magnets pass naturally (Gagner et al., SOARD, 2024; Cadière et al., J Gastrointest Surg, 2024). The goal is to lower the risk of leak, bleeding, and stricture. The key difference is evidence: SADI-S has mature 5-year data, while MagDI is new, with small numbers and short follow-up (Esparham et al., SOARD, 2026; Chiappetta et al., Obesity Surgery, 2026).
In the early studies, the magnetic anastomosis itself had a strong safety signal — no device-related leaks, bleeds, obstructions, infections, or deaths across the first multicenter series, and all anastomoses were patent at one year in the French feasibility study (Gagner et al., SOARD, 2024; Cadière et al., J Gastrointest Surg, 2024). However, these are small studies with short follow-up, and the malabsorptive nutritional risks of any duodeno-ileal bypass — vitamin deficiencies and possible protein malnutrition — still apply and require lifelong monitoring (Chiappetta et al., Obesity Surgery, 2026). It should be viewed as promising but investigational.
The conversion-specific data are early and modest: in the first multicenter study, patients who had a MagDI after a prior sleeve lost about 8 kg (17.4% excess weight loss) at six months, considerably less than patients who had a sleeve and MagDI together (Gagner et al., SOARD, 2024). Long-term conversion results are not yet established. For comparison, the conventional equivalent — conversion SADI-S — produces roughly 22–24% total weight loss maintained through five years (Esparham et al., SOARD, 2026).
The best candidates are patients who had Roux-en-Y gastric bypass and are regaining weight (or never lost enough) because the outlet between the pouch and intestine has stretched — typically to 25 mm or more — and who are committed to long-term follow-up (Jirapinyo et al., Gastrointestinal Endoscopy, 2020; Vansteenbrugge et al., Obesity Surgery, 2023). It also treats dumping syndrome from a dilated outlet. TORe is not appropriate if the outlet is already narrow, if there is an active marginal ulcer, or if there is a large hiatal hernia (Reicher et al., Obesity Surgery, 2023).
On average, patients lose about 8.9% of total body weight at 12 months, and roughly 7–9% is maintained through 3–5 years in the largest long-term series (Jirapinyo et al., Gastrointestinal Endoscopy, 2025; Jirapinyo et al., Gastrointestinal Endoscopy, 2020). Results improve substantially with technique and adjuncts: a purse-string suture pattern achieves about 12.8% total weight loss, and combining TORe with anti-obesity medication yields about 15.2% at one year (Jirapinyo & Thompson, Gastrointestinal Endoscopy, 2023).
Revisional surgery is safe when performed by an experienced surgeon at an accredited center, but it is more complex than a first operation. Complication rates are somewhat higher than for primary surgery because of scar tissue and altered anatomy, while the risk of death remains low.
A thorough workup before surgery, including endoscopy and imaging, helps choose the right operation and reduce risk. Surgeon experience with revisions matters a great deal.
Most patients go home after one to two nights and return to desk work in about two weeks, although recovery can take a little longer than after a first operation, depending on the type of revision. Walking starts the day of surgery. You will progress through the liquid, pureed and soft-food stages over several weeks, and heavy lifting is avoided for about four to six weeks. Endoscopic revisions such as TORe have a much shorter recovery, often just a few days.
Yes — common revisions include sleeve → bypass or sleeve → SADI -S.
Yes. Removing a gastric band and converting to another operation is one of the most common bariatric revisions. Bands are often removed because of slippage, erosion, reflux, swallowing problems or inadequate weight loss. Most patients convert to a sleeve gastrectomy or gastric bypass, and selected patients to SADI-S or duodenal switch. Depending on the condition of the stomach, removal and conversion can often be done in one operation; sometimes they are staged for safety.
The best operation depends on your BMI, reflux or hiatal hernia, diabetes severity, eating patterns, prior surgeries, medications and long-term goals. Sleeve gastrectomy and gastric bypass are the most common choices; gastric bypass is preferred for reflux, and SADI-S or duodenal switch for higher BMIs or advanced diabetes. Your surgeon will recommend the best fit after a full evaluation.
An experienced, high-volume Miami program offers minimally invasive weight-loss surgery, the full range of procedures from sleeve gastrectomy to duodenal switch and revisions, comprehensive pre- and post-operative care, and virtual follow-up for patients across Florida and beyond. Dr. de la Cruz-Muñoz has performed more than 9,000 bariatric operations over more than 25 years — a volume few surgeons reach.
Many Florida insurance plans cover bariatric surgery when you meet their criteria, including Medicare, Medicaid and many commercial plans. Coverage depends on your specific policy — some employers exclude it — and most plans require documentation of BMI and related conditions, nutrition visits and medical clearance. Our office verifies your benefits and guides you through approval.
Yes. You can complete your initial weight-loss surgery consultation virtually, including a medical review, discussion of procedures such as sleeve gastrectomy, gastric bypass and SADI-S, surgical planning and insurance verification. Many pre-operative steps can also be completed remotely.
Most patients return to normal daily activities within one to two weeks after a sleeve or gastric bypass and within two to three weeks after SADI-S or duodenal switch. Desk work usually resumes in one to three weeks, and structured exercise begins at four to six weeks. The diet advances from liquids to regular textures over about six to eight weeks.
Yes. Revisional surgery is offered for weight regain, inadequate weight loss, severe reflux, ulcers, strictures, band complications and other problems after a prior bariatric operation. Options include conversion to gastric bypass, SADI-S, duodenal switch or MagDI, gastric bypass revisions, and endoscopic revision. A thorough evaluation determines the best approach.
Most patients return to normal activities within one to two weeks after sleeve gastrectomy or gastric bypass, and within two to three weeks after SADI-S or duodenal switch. Hospital stays are typically one night. Full exercise usually resumes at four to six weeks, and regular foods at about six to eight weeks.
Yes — lifelong supplementation is required after nearly all weight-loss operations. Most patients take a bariatric multivitamin, calcium citrate with vitamin D and vitamin B12, with iron as needed; malabsorptive procedures need additional fat-soluble vitamins. Regular labs check for deficiencies before they cause symptoms.
Metabolic surgery uses bariatric operations to treat metabolic diseases such as type 2 diabetes, fatty liver, high blood pressure and high cholesterol, not just excess weight. By changing gut hormones, insulin sensitivity and how nutrients are absorbed, procedures such as gastric bypass, SADI-S and duodenal switch can put diabetes into remission and reduce cardiovascular risk. Current guidelines support metabolic surgery for people with a BMI of 30–34.9 who have metabolic disease (Eisenberg et al., Surgery for Obesity and Related Diseases, 2022).
Choosing an experienced program matters for metabolic surgery because the most powerful operations — gastric bypass, SADI-S, MagDI and duodenal switch — require surgical expertise and long-term nutritional follow-up. The Miami program offers the full range of metabolic procedures, care focused on diabetes and fatty liver outcomes, and virtual follow-up for patients who travel. Dr. de la Cruz-Muñoz has performed more than 9,000 bariatric operations over more than 25 years — a volume few surgeons reach.
All bariatric operations have metabolic benefits, but gastric bypass, SADI-S, MagDI and duodenal switch produce the strongest effects on diabetes, insulin resistance and cholesterol because they reroute the intestine and change gut hormones more profoundly. Sleeve gastrectomy also improves metabolic disease. The best choice depends on your diabetes severity, BMI, reflux and willingness to follow nutritional monitoring.
Yes. Metabolic surgery is one of the most effective treatments for type 2 diabetes, often leading to remission or major reductions in medication. Randomized trials have shown better blood sugar control with surgery than with intensive medical therapy alone (Schauer et al., New England Journal of Medicine, 2017). Gastric bypass, SADI-S and duodenal switch have the strongest effects. Benefits are greatest when surgery is done earlier in the course of diabetes.
Yes. Metabolic surgery is one of the most effective treatments for fatty liver disease (MASLD) and its inflammatory form (MASH). Weight loss and improved insulin sensitivity reduce liver fat and inflammation, and studies show resolution of MASH and regression of fibrosis in many patients after surgery (Lassailly et al., Gastroenterology, 2020). Patients with advanced cirrhosis need specialized evaluation, as surgical risk is higher.
Yes. Many Florida insurance plans cover metabolic and bariatric surgery when criteria are met, especially for patients with obesity and related conditions such as type 2 diabetes, sleep apnea or hypertension. Some plans still use older BMI criteria that differ from current medical guidelines. Our office verifies your benefits and explains any requirements, such as nutrition visits or medical clearance.
Yes. You can complete your metabolic surgery consultation virtually, including a review of your diabetes, fatty liver, blood pressure and other conditions, current medications, procedure options and insurance verification. Lab results and records can be shared electronically. Pre-operative steps can largely be completed remotely before your in-person visit.
Early results suggest weight loss similar to SADI-S, with many patients losing roughly 65–80% of excess weight, along with improvements in diabetes and other metabolic conditions. MagDI is a newer procedure, so long-term results are still being collected. When used as a revision after a sleeve, it can provide meaningful additional weight loss. Lifelong vitamins and lab monitoring are required.
MagDI (magnetic duodeno-ileal anastomosis) is a newer metabolic operation that uses two magnets, placed endoscopically and laparoscopically, to gradually create a connection between the duodenum and the ileum without sutures or staples. It is typically combined with a sleeve gastrectomy, resulting in an operation similar in concept to SADI-S. It is designed to deliver strong weight loss and diabetes improvement with a potentially lower risk of leaks at the connection. Long-term data are still emerging.
Call the same day if you cannot keep fluids down for about a day, if vomiting persists or returns after stopping, or if you notice dehydration signs such as dizziness, dark urine, or a racing heart. Seek emergency care immediately for vomiting combined with abdominal pain, fever, and a fast heart rate, or for any confusion, vision changes, or unsteadiness, which can indicate a dangerous thiamine deficiency.
If you have corrected your eating technique and still vomit, a structural or functional problem may be present. After a sleeve, a stricture (narrowing) is the classic cause and often appears two to six months out. After a bypass, marginal ulcers, a gastrojejunal stricture, or an internal hernia should be considered. In patients with persistent post-bypass vomiting, endoscopy finds a significant abnormality about 62 percent of the time, so evaluation is worthwhile.
These GLP-1 medications slow stomach emptying and can leave food in the stomach despite fasting, which raises anesthesia safety concerns. Many teams hold weekly injections for about a week and daily pills on the day of surgery, but recommendations vary and management is individualized. The most important step is to tell your surgical and anesthesia team that you take one and exactly when you took your last dose.
Cravings decrease because satiety hormones — especially GLP‑1 and PYY — surge after surgery. These hormones strengthen fullness signals, reduce reward‑driven eating, and calm the brain pathways that respond to sugar and high‑calorie foods. Patients often say food “feels different” or “doesn’t have the same hold on me.” This is a direct result of gut‑brain hormonal changes, not discipline. Surgery resets the biology that drives cravings.
Metabolism improves within days because surgery rapidly increases insulin sensitivity, stabilizes blood sugar, reduces inflammation, and changes bile acid signaling. These shifts happen before significant weight loss. Patients experience fewer energy crashes, fewer cravings, and better metabolic control almost immediately. This is why bariatric surgery is one of the most effective treatments for type 2 diabetes — it changes metabolic biology, not just calorie intake.
The set‑point is the weight your body biologically defends. In obesity, the set‑point is too high — the body fights weight loss by increasing hunger and slowing metabolism. After bariatric surgery, hormonal and metabolic changes lower the set‑point. Your body begins defending a healthier, lower weight, making weight loss sustainable. Patients stop “fighting their biology” and finally feel like their body is working with them instead of against them.
Obesity is a chronic, progressive disease driven by biology—not willpower. Hormones that regulate hunger, fullness, metabolism, and fat storage become dysregulated, causing the body to defend a higher weight set‑point. This makes long‑term weight loss extremely difficult without medical or surgical treatment. Obesity also increases the risk of more than 250 diseases, including diabetes, heart disease, fatty liver disease, sleep apnea, and multiple cancers.
Untreated obesity raises the risk of type 2 diabetes, hypertension, high cholesterol, sleep apnea, fatty liver disease, kidney disease, infertility, joint degeneration, and at least 13 obesity‑related cancers. It also accelerates inflammation, organ damage, and metabolic dysfunction. Even modest, sustained weight loss—whether through medication or surgery—dramatically reduces these risks.
Diets fail because they fight biology. When calories drop, hunger hormones rise, fullness hormones fall, and metabolism slows—a survival response called metabolic adaptation. The body actively resists weight loss and pushes weight regain. This is why most diets fail long‑term and why medical therapy or metabolic surgery is often required to treat the underlying hormonal drivers.
Obesity is diagnosed using body composition, not just weight. While BMI is a screening tool, the true diagnosis comes from evaluating body fat percentage, visceral fat, metabolic markers, waist circumference, and obesity‑related conditions such as diabetes, fatty liver disease, or sleep apnea. Many patients with a “normal BMI” still have obesity based on excess body fat and metabolic dysfunction.
Yes—obesity is treatable and its complications are often reversible. With evidence‑based therapy (nutrition, medications, or metabolic surgery), patients can improve insulin resistance, normalize blood pressure, resolve sleep apnea, reverse fatty liver disease, and dramatically reduce long‑term cardiovascular and cancer risk. The key is early, sustained treatment, not short‑term dieting.
Obesity is driven by genetics, hormones, metabolism, gut microbiota, sleep disruption, medications, stress, and environmental factors. More than 100 genes influence appetite, cravings, and fat storage. This is why two people can eat the same diet and gain or lose weight differently. Obesity is a biological disease, not a behavioral failure.
Patients should consider medical or surgical treatment when obesity is causing health problems (diabetes, hypertension, sleep apnea, fatty liver disease), when weight is affecting quality of life, or when repeated dieting has failed. Metabolic surgery is the most effective option for patients with severe obesity or obesity‑related diseases, offering durable weight loss and powerful metabolic improvements.
Bariatric surgery improves OSA by reducing fat around the neck, tongue base, and airway, decreasing pressure on the upper airway. It also improves lung volume, decreases inflammation, and enhances neuromuscular airway tone. Many patients see improvement within weeks, and complete resolution is common as weight loss progresses.
Yes. Many patients experience full resolution of OSA after sleeve gastrectomy or gastric bypass. Improvement often begins early due to reduced airway inflammation and metabolic changes, and long‑term remission occurs as weight loss stabilizes. Severe OSA may require continued CPAP until weight loss is complete.
Yes. Bariatric surgery is one of the most effective treatments for fatty liver disease. Weight‑loss surgery reduces liver fat, reverses inflammation, and can even improve early fibrosis. Studies show up to 85% of patients experience resolution of NASH after surgery. Improvements begin within weeks as insulin resistance decreases and metabolic signaling normalizes.
Most patients have no symptoms until the disease becomes advanced. When symptoms do appear, they may include fatigue, right‑upper‑quadrant discomfort, abdominal bloating, or elevated liver enzymes. Severe cases can progress to fibrosis, cirrhosis, or liver failure. Because fatty liver is often silent, early diagnosis through labs or imaging is essential.
Obesity is a chronic metabolic disease with many contributing causes: genetics, hormones that control hunger and fullness, an environment full of inexpensive high-calorie foods, poor sleep, chronic stress, certain medications and medical conditions.
Once weight is gained, the body tends to defend it by increasing hunger and slowing metabolism. That is why obesity is best treated as a medical condition, with options that range from nutrition and lifestyle support to medications, endoscopic procedures and surgery.
Partly. Twin and family studies suggest that genetics explains roughly 40 to 70 percent of the differences in body weight between people. Hundreds of genes influence appetite, fullness, fat storage and metabolism.
Genes are not destiny, though. They interact with the environment, including ultra-processed food, sleep, stress and activity, and epigenetic changes can affect how those genes are expressed. A family history of obesity means you may need more than diet and exercise, not that treatment won't work.
Because weight is regulated by biology, not just willpower. When you cut calories, your body fights back: the hunger hormone ghrelin rises, fullness hormones such as GLP-1 and PYY fall, and your metabolism slows to conserve energy. This is called metabolic adaptation, and it is why only a small minority of people keep weight off with dieting alone.
That does not mean you are doing anything wrong. Obesity is a chronic disease, and it often needs medical treatment, such as GLP-1 medications, endoscopic procedures or bariatric surgery, that changes the biology driving weight regain.
Obesity is recognized as a chronic disease by major medical organizations, including the American Medical Association. It is influenced by genetics, hormones, brain signaling, environment, sleep, stress and medications — not simply willpower. Like other chronic diseases, it often requires long-term treatment, which may include nutrition, activity, behavioral support, medications and surgery. Lifestyle matters, but biology largely determines how the body responds.
The body has powerful systems that defend its weight. When you lose weight, hunger hormones rise, fullness hormones drop, the brain becomes more focused on food and metabolism slows — a process called metabolic adaptation. Genetics, sleep, stress, medications and the modern food environment add to the challenge. These are biological forces, not character flaws, which is why medical treatment is often needed.
Genetics play a major role. Studies of twins and adopted children suggest that roughly 40–70% of the variation in body weight is inherited, influencing appetite, fullness, metabolism and where fat is stored. Many genes each contribute a small effect, and a few rare single-gene forms cause severe early obesity. Genes interact with environment, sleep, stress and medications, so a family history raises risk but does not determine destiny.
GLP-1 medications mimic a natural gut hormone released after eating. They act on the brain to reduce hunger and increase fullness, slow stomach emptying so meals last longer, quiet "food noise," and improve insulin release and blood sugar. Tirzepatide also acts on a second hormone, GIP. In clinical trials, these medications produced average weight loss of about 15–20% (Wilding et al., New England Journal of Medicine, 2021; Jastreboff et al., New England Journal of Medicine, 2022).
Yes. Obesity is associated with more than 200 health conditions, including type 2 diabetes, high blood pressure, high cholesterol, heart disease, stroke, sleep apnea, fatty liver disease, reflux, osteoarthritis, infertility and PCOS, depression and at least 13 types of cancer. Losing weight — through medical treatment or bariatric surgery — improves or resolves many of these conditions.
Dieting alone usually cannot overcome the body's biological defenses against weight loss. As weight falls, hunger hormones rise, fullness hormones fall and metabolism slows — changes that can last for years. Most people regain the majority of diet-related weight loss within several years. That is not a failure of willpower, and it is why treatments that address appetite biology, such as GLP-1 medications and bariatric surgery, are more effective for many people with obesity.
Consider medical evaluation when excess weight affects your health, mobility or quality of life, or when you have related conditions such as prediabetes, diabetes, high blood pressure, sleep apnea, fatty liver or joint pain. Guidelines support medications for adults with a BMI of 30 or higher, or 27 or higher with a weight-related condition, and surgery for a BMI of 35 or higher, or 30 or higher with metabolic disease. Early treatment can help prevent complications.
Yes. Bariatric surgery treats the biological drivers of obesity, changing hunger and fullness hormones, insulin sensitivity and the weight the body defends. It is the most effective and durable treatment for severe obesity, producing large, sustained weight loss and improving or resolving diabetes, high blood pressure, sleep apnea and fatty liver. Long-term studies show it also reduces the risk of heart disease, cancer and early death.
The Miami Bariatric Destination Program is a coordinated pathway for patients traveling from outside South Florida, other states or other countries. It includes virtual consultation, local pre-operative testing, help with planning your stay, surgery and recovery in Miami, and virtual follow-up after you return home, with coordination with your local physicians.
Yes. Most destination patients complete their initial consultation virtually, including medical review, discussion of procedure options, surgical planning and insurance or self-pay information. Much of the pre-operative process — testing, nutrition visits and medical clearance — can then be done at home, so you travel to Miami only for surgery and the immediate recovery period.
Destination patients should plan to stay in Miami for approximately one week. That covers final visits before surgery, the operation and usually one night in the hospital, and a few days of monitoring and a follow-up check before flying home. Your team confirms your schedule during planning.
Patients typically stay in nearby hotels, short-term rentals or recovery residences close to the hospital for convenient follow-up after discharge. Choose a place with a refrigerator for protein shakes and easy access to walking space. Our team can share recommendations. Having a support person stay with you for the first few days is strongly encouraged.
Yes. Most required testing — blood work, EKG, chest X-ray, nutrition visits and medical clearance — can be completed with your local physicians and sent to our team before you travel. Some patients may also need an upper endoscopy, sleep study or cardiac testing, which can often be done locally as well. Completing testing in advance shortens your time in Miami.
Most patients fly home after approximately one week in Miami, once the surgical team has seen them for follow-up and they are tolerating fluids well. On the flight, walk the aisle regularly, do calf exercises, stay hydrated and follow your blood clot prevention plan, since long trips raise clot risk. Bring your medications, protein shakes and discharge instructions in your carry-on.
Yes. Routine follow-up visits — typically at about 2 weeks, 6 weeks, 3 months, 6 months and 12 months — can be completed virtually for destination patients. Labs can be drawn locally and reviewed remotely, and nutrition visits can also be virtual. An in-person visit or local evaluation is arranged if a problem needs to be examined.
Our team provides virtual triage, coordinates care with local physicians and emergency departments when needed, and remains available for urgent post-operative concerns. Before you travel, you receive written warning signs and contact numbers. If you need emergency care at home, tell the treating team that you had bariatric surgery and have them contact your surgeon. Complex problems can be evaluated in Miami when appropriate.
Usually not. Most destination patients complete their consultation virtually and finish pre-operative testing with their local doctors, so they travel to Miami once for surgery and the immediate recovery period. Follow-up visits can be done virtually, with labs drawn locally. An additional trip is needed only if a problem requires in-person evaluation.
Plan to stay in Miami for approximately one week. That includes your final pre-operative visits, surgery with usually one night in the hospital, and a few days of recovery and a follow-up check before you travel home. Your team will confirm the timeline before you book travel.
Yes — virtual check ins and education are available.
Because weight is regulated by biology, not just willpower. When you cut calories, your body fights back: the hunger hormone ghrelin rises, fullness hormones such as GLP-1 and PYY fall, and your metabolism slows to conserve energy. This is called metabolic adaptation, and it is why only a small minority of people keep weight off with dieting alone.
That does not mean you are doing anything wrong. Obesity is a chronic disease, and it often needs medical treatment, such as GLP-1 medications, endoscopic procedures or bariatric surgery, that changes the biology driving weight regain.
Obesity is a chronic metabolic disease with many contributing causes: genetics, hormones that control hunger and fullness, an environment full of inexpensive high-calorie foods, poor sleep, chronic stress, certain medications and medical conditions.
Once weight is gained, the body tends to defend it by increasing hunger and slowing metabolism. That is why obesity is best treated as a medical condition, with options that range from nutrition and lifestyle support to medications, endoscopic procedures and surgery.
Bariatric surgery works mainly through hormones, not just a smaller stomach. After surgery, levels of ghrelin, the main hunger hormone, fall, while fullness hormones such as GLP-1 and PYY rise after meals.
Insulin sensitivity improves, often within days, and changes in bile acids and gut bacteria further improve metabolism. Together, these changes reduce hunger, increase fullness and help lower the body's defended weight, which is why surgery produces lasting weight loss when diets usually do not.
Obesity is a chronic metabolic disease with many contributing causes: genetics, hormones that control hunger and fullness, an environment full of inexpensive high-calorie foods, poor sleep, chronic stress, certain medications and medical conditions.
Once weight is gained, the body tends to defend it by increasing hunger and slowing metabolism. That is why obesity is best treated as a medical condition, with options that range from nutrition and lifestyle support to medications, endoscopic procedures and surgery.
The program offers medical weight loss, GLP-1 and other medications, nutrition and lifestyle programs, gastric balloons, endoscopic sleeve gastroplasty, and the full range of bariatric surgery — sleeve gastrectomy, gastric bypass, SADI-S, duodenal switch and MagDI — as well as revisional surgery. Treatments can be combined over time to match your needs.
The best treatment depends on your BMI, health conditions such as diabetes, fatty liver or reflux, prior weight-loss attempts, your goals and your preferences. Options range from medical weight loss and GLP-1 medications to endoscopic procedures and bariatric surgery, and they can be combined. A consultation reviews these factors and recommends a personalized plan, explaining the expected results and trade-offs of each approach.
Yes. GLP-1 medications such as semaglutide and tirzepatide reduce hunger, increase fullness and improve insulin resistance. In clinical trials, average weight loss was about 15% with semaglutide and about 20% with the highest dose of tirzepatide (Wilding et al., New England Journal of Medicine, 2021; Jastreboff et al., New England Journal of Medicine, 2022). They work best with nutrition and exercise, and weight often returns when they are stopped.
Current ASMBS and IFSO guidelines recommend considering metabolic and bariatric surgery for adults with a BMI of 35 or higher, regardless of other conditions, and for those with a BMI of 30–34.9 who have metabolic disease such as type 2 diabetes (Eisenberg et al., Surgery for Obesity and Related Diseases, 2022). Surgery is also considered when medications and lifestyle treatment have not produced enough improvement. Lower BMI thresholds apply to people of Asian ancestry.
Yes. Both medical and surgical obesity treatments improve blood sugar control and insulin resistance. Losing 5–10% of body weight measurably lowers A1C, GLP-1 medications improve diabetes directly as well as through weight loss, and metabolic surgery produces the largest effect, often leading to remission (Schauer et al., New England Journal of Medicine, 2017). Diabetes medications usually need to be reduced as treatment works, so close monitoring is important.
Coverage depends on the treatment and your plan. Many Florida plans cover bariatric surgery when criteria are met. Coverage for weight-loss medications varies widely — some plans cover them with prior authorization, while others exclude them. Endoscopic procedures such as gastric balloons and endoscopic sleeve gastroplasty are usually self-pay. Our office reviews your benefits and explains costs before you start.
Yes. You can complete your obesity treatment consultation virtually, including a medical review, discussion of medications such as GLP-1s, endoscopic options and surgery, and a personalized plan. Follow-up visits for medical weight loss can often be virtual as well, with labs drawn locally.
The Allurion balloon — originally called the Elipse balloon — is an intragastric balloon you swallow as a capsule, with no endoscopy, sedation, or anesthesia needed. Once it's confirmed in the stomach by X-ray, it's filled with about 550 mL of liquid. It stays in place for roughly four months to help you feel full and eat less, then empties on its own and passes naturally in the stool — no removal procedure required (Silva et al., Obesity Surgery, 2024; Jirapinyo & Thompson, Digestive Diseases and Sciences, 2022).
The Allurion balloon is the only gastric balloon that needs no endoscopy or anesthesia for placement or removal — you swallow it, and it passes on its own at about four months (Vantanasiri et al., Obesity Surgery, 2020). Other balloons (such as Orbera or Spatz) require an endoscopy to place and remove. Compared with a surgical sleeve gastrectomy, the balloon is non-surgical, temporary, and lower-risk, but produces less weight loss and is a shorter-term tool rather than a permanent change (Jirapinyo & Thompson, 2022).
To an extent, yes. Beyond the gene variants you inherit, animal studies show diet- and chemical-induced epigenetic marks can be passed to offspring, and human famine records suggest metabolic effects can echo across generations. The human evidence is associational and debated, while the strongest proof comes from animal models — but the mechanism (inheritance of chemical tags rather than DNA changes) is well established.
Diet clearly influences the epigenome. Nutrients that supply methyl groups (folate, B12, choline) and fiber fermented into short-chain fatty acids by gut bacteria both directly affect how genes are switched on or off. Diets low in these protective components and high in obesogenic exposures are associated with less favorable methylation patterns, though research distinguishing specific food types is still developing.
No. Inherited risk — genetic and epigenetic — loads the odds but does not fix the outcome. Many epigenetic marks are responsive to diet, exercise, sleep, and weight loss, meaning environment continues to shape gene activity throughout life. The "memory" effect makes change harder, not impossible.
Partly. Calorie reduction, exercise, and bariatric surgery measurably shift methylation toward healthier patterns. However, fat tissue retains an epigenetic memory of prior obesity that can persist for years and contributes to weight regain, so reversal is incomplete rather than total.
Most patients lose about 10–13% of their total body weight by the end of the treatment period — roughly 2–3 times what diet and exercise achieve alone (Elmaleh-Sachs et al., JAMA, 2023; Silva et al., Obesity Surgery, 2024). The adjustable balloon can reach about 15–16% total body weight loss, and the swallowable procedureless balloon averages about 12.5% by ~4 months. Because the balloon is temporary, some weight is typically regained afterward, so lasting results depend on continuing a structured diet, activity, and often medication after removal (McCarty & Thompson, Yamada's Textbook of Gastroenterology, 2022; Chan et al., Obesity Surgery, 2021).
A gastric balloon is temporary, incisionless, and reversible — it is placed for about 4–6 months and then removed or passed naturally, with no permanent change to your anatomy — and is approved for a BMI of 30–40 (Elmaleh-Sachs et al., JAMA, 2023; Apovian et al., The Obesity Society, 2025). Bariatric surgery permanently changes the stomach (and sometimes the intestine), produces greater and more durable weight loss, and is used for higher BMIs. The balloon is best viewed as a lower-risk "jump-start" or a bridge to surgery, while surgery is the definitive option for more substantial, lasting weight loss (Laing et al., Digestive Diseases and Sciences, 2017).
