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Sponsored Artificial Intelligence: A Modern Approach, Global Edition Artificial Intelligence: A Modern Approach, Global Edition

Author

Michael Greger

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2 papers indexed here

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Review Oct 2026

Insufficient Evidence for Collagen Supplementation: A Critical Examination of Skin, Musculoskeletal, and Joint Health Claims

Background: Collagen supplementation has grown exponentially in the nutraceutical market, driven by marketing claims of benefits for skin aging, body composition, and joint health. This narrative review critically examines current evidence for oral collagen supplementation across these domains, emphasizing methodologic...

David M. Goldman, Matthew Nagra, Michael Greger · 0 citations
Review Sep 2026

Testosterone Replacement Therapy in Aging Men: A Critical Appraisal of Evidence, Risks, and Benefits

It is found that age-related decline in testosterone concentrations frequently reflects accumulated comorbidity rather than primary testicular failure, and lifestyle modification, principally weight reduction and structured exercise, can restore endogenous testosterone production and should be offered first.

David M. Goldman, Cassandra B. Warbeck, Michael Greger · 0 citations

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