Research
Macro partitioning
Rapid weight loss from GLP-1 and dual/triple agonists can lead to significant loss of lean muscle mass, necessitating strategies to preserve muscle.
While GLP-1 and dual/triple agonists are effective for fat loss, they can also cause significant muscle loss. Patients should consider resistance training and discuss muscle-preserving strategies with their healthcare provider.
GoodQualifiesHIGH confidence
Tirzepatide treatment resulted in -33.9% reduction in total body fat mass (vs -8.2% placebo) and reduced lean mass by -10.9% (vs -2.6% placebo).
Why this rating
Supported by DEXA data from the SURMOUNT-1 trial.
Source
G protein-coupled receptors and obesity
Alessandro Pocai · Frontiers in Endocrinology · 2023
DOI 10.3389/fendo.2023.1301017
narrative_reviewCited 9×
Read the paper DOI resolved against Crossref · corpus check 2026-06-10
More from this paper
- GLP-1 receptor agonists (GLP-1RA) such as semaglutide and liraglutide produce significant weight loss (≥10%) and cardiovascular benefits in adults with obesity.Strong
- Dual or triple agonists targeting GLP-1, GIP, and/or Glucagon receptors (GCGR) produce superior weight loss compared to selective GLP-1 receptor agonists alone.Good
Related findings · Macro partitioning
- Total daily protein intake of 1.6 g/kg/day is sufficient for maximizing resistance training-induced muscle gains, with an upper confidence interval of 2.2 g/kg/day.Strong
- Resistance exercise training combined with sufficient dietary protein intake acts synergistically to maximize skeletal muscle hypertrophy, with protein intake saturating around 1.6 g/kg/day for general populations and potentially requiring 2.0-2.2 g/kg/day for resistance-trained individuals.Strong
- Trans fats should be completely eliminated from the diet, as they increase LDL cholesterol, decrease HDL cholesterol, and are directly associated with increased coronary risk.Strong
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