Collagen
surging collagen — booming; the evidence is early and often industry-funded
Evidence by outcome
skingrade Clow certainty— small improvements in skin elasticity/hydration in industry-funded trials
joint healthgrade Clow certainty— limited evidence for joint comfort in athletes
People say · Evidence shows
“Collagen supplements rebuild your skin and joints”
aheadlargemarketing claim
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sources: PMID:00000028 · PMID:00000029