Benefits and Risks of Bariatric Surgery in Adults: A Review (2024)

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    Review

    September1, 2020

    David E.Arterburn,MD, MPH1; Dana A.Telem,MD, MPH2; Robert F.Kushner,MD3; et al Anita P.Courcoulas,MD, MPH4

    Author Affiliations Article Information

    • 1Kaiser Permanente Washington Health Research Institute, Seattle, Washington

    • 2University of Michigan Department of Surgery, Ann Arbor

    • 3Northwestern University, Feinberg School of Medicine, Chicago, Illinois

    • 4Department of Surgery, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania

    JAMA. 2020;324(9):879-887. doi:10.1001/jama.2020.12567

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    Update on Bariatric Surgery—2020

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    Abstract

    Importance Severe obesity and its related diseases, such as type 2 diabetes, hypertension, dyslipidemia, and sleep apnea, are very common in the United States, but currently very few patients with these conditions choose to undergo bariatric surgery. Summaries of the expanding evidence for both the benefits and risks of bariatric surgery are needed to better guide shared decision-making conversations.

    Observations There are approximately 252 000 bariatric procedures (per 2018 numbers) performed each year in the US, of which an estimated 15% are revisions. The 1991 National Institutes of Health guidelines recommended consideration of bariatric surgery in patients with a body mass index (calculated as weight in kilograms divided by height in meters squared) of 40 or higher or 35 or higher with serious obesity-related comorbidities. These guidelines are still widely used; however, there is increasing evidence that bariatric procedures should also be considered for patients with type 2 diabetes and a body mass index of 30 to 35 if hyperglycemia is inadequately controlled despite optimal medical treatment for type 2 diabetes. Substantial evidence indicates that surgery results in greater improvements in weight loss and type 2 diabetes outcomes, compared with nonsurgical interventions, regardless of the type of procedures used. The 2 most common procedures used currently, the sleeve gastrectomy and gastric bypass, have similar effects on weight loss and diabetes outcomes and similar safety through at least 5-year follow-up. However, emerging evidence suggests that the sleeve procedure is associated with fewer reoperations, and the bypass procedure may lead to more durable weight loss and glycemic control. Although safety is a concern, current data indicate that the perioperative mortality rates range from 0.03% to 0.2%, which has substantially improved since early 2000s. More long-term randomized studies are needed to assess the effect of bariatric procedures on cardiovascular disease, cancer, and other health outcomes and to evaluate emerging newer procedures.

    Conclusions and Relevance Modern bariatric procedures have strong evidence of efficacy and safety. All patients with severe obesity—and especially those with type 2 diabetes—should be engaged in a shared decision-making conversation about the risks and benefits of surgery compared with continuing usual medical and lifestyle treatment, and the decision about surgery should be driven primarily by informed patient preferences.

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    Bariatric Surgery Cardiology Surgery Cardiovascular Risk Factors Diabetes Diabetes and Endocrinology Lifestyle Behaviors Minimally Invasive Surgery Diet Obesity Gastrointestinal Surgery

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    Arterburn DE, Telem DA, Kushner RF, Courcoulas AP. Benefits and Risks of Bariatric Surgery in Adults: A Review. JAMA. 2020;324(9):879–887. doi:10.1001/jama.2020.12567

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        Benefits and Risks of Bariatric Surgery in Adults: A Review (2024)

        FAQs

        What are the downsides of bariatric surgery? ›

        Bariatric Surgery Long-Term Risks
        • Dumping syndrome, a condition that can lead to symptoms like nausea and dizziness.
        • Low blood sugar.
        • Malnutrition.
        • Vomiting.
        • Ulcers.
        • Bowel obstruction.
        • Hernias.

        What is one of the top 3 causes of death after bariatric surgery? ›

        Coronary heart disease was the leading cause among the 395 deaths, at 76 (19.2%) (Table 6). Sepsis (13.9%), pulmonary embolism (11.9%), therapeutic complications (11.4%), cancer (10.6%), and CHD accounted for 67.1% of all natural deaths.

        What is the life expectancy after bariatric surgery? ›

        The adjusted median life expectancy in the surgery group was 3.0 years (95% CI, 1.8 to 4.2) longer than in the control group but 5.5 years shorter than in the general population. The 90-day postoperative mortality was 0.2%, and 2.9% of the patients in the surgery group underwent repeat surgery.

        Which organ is impacted by bariatric surgery? ›

        Bariatric surgery procedures work by modifying your digestive system — usually your stomach, and sometimes also your small intestine — to regulate how many calories you can consume and absorb. They can also reduce the hunger signals that travel from your digestive system to your brain.

        Why are people against bariatric surgery? ›

        This surgery both limits how much you can eat and reduces the absorption of nutrients. While it is extremely effective, it has greater risk, including malnutrition and vitamin deficiencies.

        What is the safest weight loss surgery? ›

        A sleeve gastrectomy is one of the safest weight loss surgeries. It's usually done laparoscopically (a minimally invasive procedure done with a small camera as a guide), so you'll have smaller incisions and quicker healing than with some other surgeries.

        Does anyone regret getting a gastric sleeve? ›

        You are unlikely to regret undergoing the surgery taking into account these benefits if you have such health problems and your attempts to lose weight in other ways have been unsuccessful. Gastric sleeve surgery, however, is also associated with serious risks and side effects.

        Why do people fail after bariatric surgery? ›

        When it does fail, the majority of the time it's because the patient went back to their old eating habits. In occasional cases, the bariatric procedure may not have been effective and may warrant a revision. Such conditions include band slippage or blockage, or severe heartburn and reflux among others.

        How many years does a gastric sleeve last? ›

        How Many Years Does a Gastric Sleeve Last? Gastric sleeve is a permanent procedure. It lasts for the rest of your life and can't be reversed.

        Does your stomach go back to normal after bariatric surgery? ›

        Your stomach will not grow back into its original size. However, what may happen is that the remaining portion of your stomach may stretch or expand, just like a balloon. With a smaller stomach size and capacity, patients who undergo gastric sleeve surgery are expected to feel fuller easily even while eating less food.

        What is the average age of bariatric patients? ›

        According to the National Institute of Health, if someone is at least 100 pounds overweight with multiple failed attempts at losing weight, and has a BMI of 30 or higher, they could be considered a candidate. Is there an average age that people have bariatric surgery? The average age is 40 to 45 years old.

        How long does it take to fully heal from bariatric surgery? ›

        Most gastric bypass surgery is laparoscopic, which means the surgeon makes small cuts. That makes for shorter recovery time. Most people stay in the hospital for 2 to 3 days, and get back to normal activities in 3 to 5 weeks.

        Can you ever eat normally after gastric bypass? ›

        A gastric bypass diet follows a staged approach to help you ease back into eating solid foods. How quickly you move from one step to the next depends on how fast your body heals and adjusts to the change in eating patterns. You can usually start eating regular foods about 6 to 8 weeks after surgery.

        What are the cons of bariatric surgery? ›

        In the months following bariatric surgery, you may be at increased risk for the following conditions:
        • Depression, especially in people who experienced depression before surgery.
        • Alcohol- and substance-abuse disorders.
        • Social relationship changes.
        • Hair loss.
        • Sagging skin.
        • Gallstones.

        Where does fat go after bariatric surgery? ›

        Besides a dramatic loss of fat mass, bariatric surgery shifts the distribution of fat from visceral to the subcutaneous compartment favoring metabolic improvement.

        Are there any long term side effects from bariatric surgery? ›

        Any patient who undergoes surgery is usually prescribed some sort of opioid to help cope with the post-operative pain, but new research suggests that bariatric patients are more likely to develop chronic opioid use, and this occurs more often in patients who had postoperative complications or lost less weight.

        What is the quality of life after bariatric surgery? ›

        Summarising results obtained on a basis of the SF-36 questionnaire, the quality of life improved versus values determined before surgical treatment. The quality of life index rose from 85.2 to 145.1 points (p = 0.00). Patients post both surgeries achieved a similar end result (p = 0.61).

        Is it worth getting bariatric surgery? ›

        “In addition to weight loss, more than 95% of people who get bariatric surgery see improvement in associated medical conditions, like high blood pressure, diabetes and sleep apnea,” says Dr. Tatarian. If you're considering bariatric surgery, talk to your primary care provider sooner rather than later.

        Can I live a normal life after bariatric surgery? ›

        Weight-loss surgery can start you on the path to a healthier, longer and more fulfilling life. It is not a cure for obesity but rather a tool to help you lose weight. Long-term success depends on your ability to follow guidelines for diet, exercise and lifestyle changes.

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