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What are peptides and why is the FDA considering easing limits?
This version of What Are Peptides And Why Is The Fda Considering Easing Limits 261857349531 - Breaking News | NBC News Clone was adapted by NBC News Clone to help readers digest key facts more efficiently.
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Health Secretary Robert F. Kennedy Jr. is among those singing the praises of unproven peptides online. But what are peptides, and why are some doctors worried about them? NBC News' Jesse Kirsch explains.April 22, 2026
