Research
Mixed
High-quality weight loss, defined as maximizing fat loss while preserving skeletal muscle mass, is critical for maintaining metabolic health, insulin sensitivity, and long-term weight maintenance.
When losing weight, prioritize strategies that protect your muscles, such as adequate protein intake and resistance exercise. Losing muscle along with fat can harm your metabolism and insulin sensitivity, making long-term weight maintenance harder.
GoodSupportsHIGH confidence
We refer here to high-quality weight loss as a high proportion of fat versus skeletal muscle lost... Preservation of muscle mass during weight loss is likely to be central to improved insulin sensitivity.
Why this rating
Based on a comprehensive review of multiple studies, clinical trials, and physiological mechanisms.
Source
High-Quality Weight Loss in Obesity: Importance of Skeletal Muscle
Mary‐Ellen Harper et al. · Diabetes · 2025
DOI 10.2337/dbi25-0003
narrative_reviewCited 13×
Read the paper DOI resolved against Crossref · corpus check 2026-06-10
More from this paper
- Current pharmacological treatments for obesity, including incretin-based therapies (semaglutide, tirzepatide), result in significant skeletal muscle loss (approx. 7-10% of lean mass) alongside fat loss.Strong
- Resistance exercise combined with caloric restriction is the most effective non-pharmacological strategy for preserving skeletal muscle mass and strength during weight loss.Good
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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