A growing number of Americans are purchasing and injecting peptides from online sellers in hopes of reversing aging or treating illness, often without knowing what the products contain. Pinchas Cohen, a professor and medical researcher, warns that these powerful biological molecules should be used only under a physician’s supervision and produced in reliable facilities. He is concerned that enthusiasm in the wellness marketplace is racing ahead of the science.

Cohen’s laboratory has drawn attention for giving newly discovered peptides playful names that resemble Yiddish words. The names are carefully constructed from scientific terms by students in his lab, blending humor with serious research. Despite the lighthearted branding, the compounds themselves are the subject of rigorous study, with some showing links to conditions such as Alzheimer’s disease and diabetes.

Cohen’s major scientific contribution has been uncovering previously hidden peptides encoded within the genetic material of mitochondria, the structures that generate energy inside cells. This discovery revealed an unexpected library of small, biologically active molecules that could open new paths for treating disease. He believes many more such microproteins remain to be found, potentially reshaping modern biology.

While public figures have called for loosening federal restrictions on peptide treatments, Cohen stresses that each compound must undergo careful clinical trials and regulatory review. He envisions a medical revolution grounded in evidence and patient safety, not in unregulated online sales. And as his lab continues its work, he expects there will be more discoveries — and more whimsically named peptides — ahead.