Are peptides the fountain of youth? Doctors warn hype may outpace science

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  • Source: Fox News
  • 02/12/2026

Peptide therapy has gained popularity as a potential health and longevity booster, but experts are warning of cautions and limitations.

Peptides are short chains of amino acids that act as messengers involved in processes like metabolism, growth and immune function, according to Cleveland Clinic.

Some peptides have shown potential in helping with skin health, metabolism, muscle recovery and immunity, although research is limited, experts say.

"'Peptides' is a broad umbrella that includes everything from well-studied, FDA-approved therapies to experimental compounds marketed for anti-aging with limited human data," Dr. Brad Younggren, a board-certified physician and CEO and co-founder of Circulate Health in Seattle, Washington, told Fox News Digital.

Injectable GLP-1 diabetes and weight-loss drugs are a common form of peptides, he noted.

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