Milk-protein supplements show modest body-composition changes across trials
A pooled analysis found more lean mass and less fat, but no clear overall effect on muscle mass, body weight, or BMI.
Based on the published abstract. The full paper may contain additional methods, results and limitations.
The 30-second takeaway
Across randomized trials, milk-protein supplementation increased lean body mass and fat-free mass while reducing fat mass, body-fat percentage, and waist size. However, the analysis did not identify clear effects on muscle mass or overall body weight. These findings describe changes in measured body composition, without establishing broader health or performance benefits.
Participant characteristics, comparison treatments, and trial lengths are missing from the abstract, limiting judgments about who the pooled results apply to and for how long.
What researchers found
Lean body mass
Pooled weighted mean difference for milk-protein supplementation versus trial comparators, which the abstract does not describe; follow-up durations are not reported.
Separate body-composition outcomes
The review examined milk proteins, including casein and whey, and combined trial results. Its lean-mass result should be read alongside the separate muscle-mass result, which did not show a clear effect.
Dose findings lack detail
The authors also examined how supplement amounts related to outcomes. The abstract reports dose-related patterns for some measures but gives no numerical details that would support selecting an amount or ranking protein types.
The original publication
Effects of Supplementation with Milk Proteins on Body Composition and Anthropometric Parameters: A Systematic Review and Dose-Response Meta-Analysis.
Mohammadi S, Ashtary-Larky D, Alaghemand N et al.
Nutrients · 2025
- PubMed ID
- 41470822
- Record checked
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