Mixed
Licensed weight-lowering pharmacotherapies (GLP-1RAs, naltrexone/bupropion, phentermine/topiramate) improve self-reported physical function, but do not significantly improve objectively measured physical function, cardiorespiratory fitness, or physical activity levels.
If you are using FDA/EMA-approved weight loss medications, expect improvements in how you feel you function in daily life (self-reported physical function). However, do not expect these medications alone to significantly boost your actual exercise capacity, VO2 max, or daily activity levels without dedicated exercise training. The benefits are modest and primarily subjective.
Improvements in self-reported physical function were observed with weight loss therapy, but the effect on physical activity or objectively measured physical function and fitness could not be determined.
Why this rating
Based on 14 RCTs, but limited by lack of objective fitness/activity data in most studies.
Source
The effects of weight‐lowering pharmacotherapies on physical activity, function and fitness: A systematic review and meta‐analysis of randomized controlled trials
Rishi Jobanputra et al. · Obesity Reviews · 2023
DOI 10.1111/obr.13553
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
This is one finding among thousands. Every one is graded and traced to its source, so you can see what the evidence actually supports. Browse the research →