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The use of collagen and gelatin as substitutes for complete proteins in the diet and their potential effects on health.
Clinical trials have tested oral collagen (including hydrolysed collagen peptides) and gelatin in short to medium‑term interventions—most commonly 8–12 weeks—with some randomized controlled trials rep...
Replacing dietary complete proteins with gelatin or collagen for months carries measurable nutritional risks because these collagen-derived proteins are unusually low or missing in essential amino aci...
Randomized trials and mechanistic studies offer mixed, limited evidence that gelatin or collagen supplements can modestly influence satiety and, in some cases, promote small weight changes, but result...
The peer‑reviewed clinical-trial evidence for gelatin supplements producing sustained weight loss is sparse and unimpressive: a controlled 2010 trial found short‑term appetite suppression with gelatin...