Mixed
Bariatric surgery induces substantial and durable weight loss in adults with severe obesity, with 89.3% of patients achieving ≥20% weight loss in the short term (0-9 years) and 81.2% maintaining this loss in the long term (10-24 years).
For individuals with severe obesity (BMI ≥40 or ≥35 with health issues), bariatric surgery is the most effective method for achieving and maintaining significant weight loss. While lifestyle changes are crucial, they rarely result in the >20% weight loss seen with surgery. Surgery provides durable benefits for over a decade, making it a viable long-term solution for severe obesity.
Adults who reported receiving bariatric surgery were also 2.2 (1.9–2.5) times more likely to achieve 10% weight loss, and 5.0 times (4.0–6.0) more likely to achieve at least 20% weight loss from maximum weight compared with those who were eligible but did not undergo the procedure... While 89.3% (74.8–103.8) respondents achieved at least 20% weight loss within 9 years prior to survey, a lower percentage (81.2%, 63.4–99.0) were observed among those who received the procedure 10–24 years prior to survey.
Why this rating
Observational study using self-reported data from a national survey (NHANES), subject to recall bias and selection bias, though large sample size and population representativeness mitigate some concerns.
Source
Bariatric surgery and weight loss in the short‐ and long‐term: Evidence from <scp>NHANES</scp> 2015–2018
Wubin Xie et al. · Clinical Obesity · 2022
DOI 10.1111/cob.12563
Related findings · Mixed
- Bariatric surgery (VSG and RYGB) is the most effective and sustainable treatment for obesity, producing marked and sustained weight loss that non-surgical interventions cannot match.Strong
- Severely protein-deficient diets (2–3% energy) induce lean body mass loss and metabolic imbalance, whereas adequate protein intake (0.66 g/kg/d minimum) is a prerequisite for maintaining muscle, bone, and physiological function.Strong
- For patients with Class III obesity (BMI >39.9 kg/m2), metabolic bariatric surgery (MBS) is significantly more effective than any currently approved medication, with BilioPancreatic Diversion (BPD) showing the highest estimated weight loss.Strong
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