Uploaded July 2025 | Updated September 2026, 3 weeks ago

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Not all collagen supplements are created equal.

UC Davis exercise physiologist Dr. Keith Baar explains what to look for when choosing a dietary collagen supplement — and why some sources may contain harmful heavy metals. Learn why fish collagen or collagen from skin sources (not bones) may be the safer option. This short is part of a longer video on how collagen and whey protein together can boost athletic performance.

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