A scientific finding can change meaning dramatically between the laboratory and a social media feed. A researcher may report an effect in cultured cells under carefully controlled conditions. A popular video may reduce that result to a claim about what a compound can do for the human body. By the time the claim appears in a promotional caption, the experimental conditions, uncertainties and limitations may have disappeared entirely.

Peptide research offers a particularly revealing example. Peptides are studied across many areas of biology, and some have become established medicines following extensive clinical development. Others remain experimental substances with limited human evidence. Yet social media discussions can place these very different categories under the same appealing label: scientifically backed.

New research into health influencers suggests that the commercial environment surrounding these claims deserves closer attention.…