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the claim

Protein powder supplementation promotes weight loss in adults.

the verdict
INSUFFICIENT LEANING
Recorded sources
3 sources for · 0 against

Counts group repeated records of the same source within each side. They do not measure evidence strength or source independence.

Is it true that protein powder supplementation promotes weight loss in adults?

Unclear. A meta-analysis of nine RCTs reports that whey protein supplementation reduced body weight and fat mass in overweight and obese adults, and one 12-week RCT found a high-protein/fiber shake preload produced greater weight loss than a low-protein placebo. Both cover only specific supplemented populations and products, not protein powder generally in all adults.

Verdict: PARTIAL LEAN · 3 sources for, 0 against · Last checked

The private library was unavailable for some searches in this check. Missing library results are not evidence against the claim.

Evidence for · 3
Consuming a Protein and Fiber-Based Supplement Preload Promotes Weight Loss and Alters Metabolic Markers in Overweight Adults in a 12-Week, Randomized, Double-Blind, Placebo-Controlled Trial
2022
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Glynn, E., Fleming, S. A., Edwards, C., Wilson, M., Evans, M., & Leidy, H. (2022). Consuming a Protein and Fiber-Based Supplement Preload Promotes Weight Loss and Alters Metabolic Markers in Overweight Adults in a 12-Week, Randomized, Double-Blind, Placebo-Controlled Trial. doi.org. https://doi.org/10.1093/jn/nxac038

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More for · 2
Calcium Beta‐Hydroxy‐Beta‐Methylbutyrate‐Enriched Nutritional Supplementation During Dietary Weight Loss in Adults With Obesity: A Randomized Controlled Trial
2026
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Jiang, J., Liang, Y., Wang, R., Jiang, W., Jing, X., & Yang, M. (2026). Calcium Beta‐Hydroxy‐Beta‐Methylbutyrate‐Enriched Nutritional Supplementation During Dietary Weight Loss in Adults With Obesity: A Randomized Controlled Trial. doi.org. https://doi.org/10.1002/jcsm.70343

Whey Protein Supplementation Improves Body Composition and Cardiovascular Risk Factors in Overweight and Obese Patients: A Systematic Review and Meta-Analysis.
2018
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K, W., S, U., V, J., & A, S. (2018). Whey Protein Supplementation Improves Body Composition and Cardiovascular Risk Factors in Overweight and Obese Patients: A Systematic Review and Meta-Analysis.. doi.org. https://doi.org/10.1080/07315724.2017.1344591

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