ArticleObesity surgery2013
Greater short-term weight loss in women 20-45 versus 55-65 years of age following bariatric surgery.
Article in Obesity surgery, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 29 papers, 1 of them a synthesis that pooled it.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
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Who cites it
29 citing papers in PubMed, 1 synthesis or guideline pooled it, 49 citations in OpenAlex.
- Bariatric surgery in elderly patients: a systematic review.Clinical interventions in aging · 2015Pooled it
- Application of Machine Learning to Predict 1-Year Weight Loss Outcomes After Laparoscopic Sleeve Gastrectomy.Obesity surgery · 2026Article
- Impact of Menopausal Status on Bone Metabolism and Body Composition After Metabolic-Bariatric Surgery: a Two-Year Prospective Study in Middle-Aged Women.Obesity surgery · 2026Article
- Bariatric surgery after childbirth: does a history of pregnancy affect weight loss after surgery? The Maternal Outcomes of Bariatric Surgery and Pregnancy Study (MOMBARIS).Wideochirurgia i inne techniki maloinwazyjne = Videosurgery and other miniinvasive techniques · 2026Article
- Impact of Menopausal Status and Female Reproductive Aging on the Outcomes of Bariatric Surgery: A Narrative Review.Cureus · 2026Review
- Evaluation of the anthropometric profile and cardiometabolic results of women followed in an obesity program before and after bariatric surgery.Archives of endocrinology and metabolism · 2025Article
- Eating disorders and emotional dysregulation are associated with insufficient weight loss after bariatric surgery: a 1-year observational follow-up study.Eating and weight disorders : EWD · 2023Article
- Bariatric surgery and menopause.Przeglad menopauzalny = Menopause review · 2022Article
- Diet-dependent sex differences in the response to vertical sleeve gastrectomy.American journal of physiology. Endocrinology and metabolism · 2021Article
- The Influence of Laparoscopic Sleeve Gastrectomy on Body Composition and Fat Distribution in Obese Caucasian Men and Women.Obesity surgery · 2020Article
- Outcomes of sleeve gastrectomy in patients older than 60 years: a multicenter matched case-control study.Wideochirurgia i inne techniki maloinwazyjne = Videosurgery and other miniinvasive techniques · 2020Article
- Peptides from Natural or Rationally Designed Sources Can Be Used in Overweight, Obesity, and Type 2 Diabetes Therapies.Molecules (Basel, Switzerland) · 2020Review
- Changes in Body Composition, Comorbidities, and Nutritional Status Associated with Lower Weight Loss After Bariatric Surgery in Older Subjects.Obesity surgery · 2019Article
- Weight Loss Medications in Older Adults After Bariatric Surgery for Weight Regain or Inadequate Weight Loss: A Multicenter Study.Bariatric surgical practice and patient care · 2018Article
- Self-Reported Hedonism Predicts 12-Month Weight Loss After Roux-en-Y Gastric Bypass.Obesity surgery · 2017Article
- Vertical sleeve gastrectomy improves indices of metabolic disease in rodent model of surgical menopause.Menopause (New York, N.Y.) · 2017Article
- Bariatric surgery emphasizes biological sex differences in rodent hepatic lipid handling.Biology of sex differences · 2017Article
- Early Weight Loss as a Predictor of 2-Year Weight Loss and Resolution of Comorbidities After Sleeve Gastrectomy.Obesity surgery · 2016Article
- RYGB progressively increases avidity for a low-energy, artificially sweetened diet in female rats.Appetite · 2016Article
- A role for exercise after bariatric surgery?Diabetes, obesity & metabolism · 2016Review
Corrections and comments
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Authors and funding
4 authors at 3 institutions in 2 countries.
Funding
Abstract
backgroundWhether and how sex and age affect bariatric-surgery outcome is poorly understood. Estrogens regulate body composition in women and animals, and increase weight loss in a rodent model of gastric bypass, suggesting that premenopausal women may lose more weight following bariatric surgery.
methodsOne thousand three hundred fifty-six female gastric-bypass or gastric-banding patients were retrospectively grouped as 20-45 years old (presumptively premenopausal; n = 1,199) and 55-65 years old (presumptively postmenopausal; n = 157). Mixed-model ANCOVA followed by Bonferroni-corrected t tests were used to categorically test the effect of age on percent excess body weight loss (%EBWL) at 1 and 2 years post-surgery, controlling for preoperative EBW and surgery type. Age effects were also tested dimensionally in all women and in 289 male patients.
resultsTwenty- to forty-five-year-old women showed greater %EBWL 1 and 2 years post-surgery than 55-65-year-old women (p's < 0.0005). No age effect was detected in 20-25- vs. 30-35-, 30-35- vs. 40-45-, or 20-25- vs. 40-45-year-old women (p's > 0.2) This age effect was detected only after gastric banding, with 20-45-year-old women losing ∼7 kg more than 55-65-year-old women after 2 years. Dimensional analysis confirmed a significant inverse effect of age on bariatric surgery outcome in women, but did not detect any effect in men.
conclusionsResults indicate that 55-65-year-old women lose less weight than 20-45-year-old women in the initial 2 years after bariatric surgery, especially gastric banding; this may be mediated by age- or menopause-associated changes in physical activity, energy expenditure, or energy intake.
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Registered trials
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