What Is the Problem With Peptides? Mostly Animal Evidence for BPC-157, and More Fat-Free Mass Without More Strength for MK-677

Oct 25

3 min read

Peptides and related compounds are sold online with confident claims: faster tendon healing, more muscle, better recovery. The problem is not that every claim is false. It is that the evidence behind the most popular ones is mostly in animals, and the best human trial in this space shows a gap between what a body scan says and what a person can actually do.

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