Marketed for longevity and wellness benefits, the unproven therapies are sold through a grey market online. Compounding pharmacies say they should be able to make them legally to meet demand.

If a compound is powerful enough to treat disease, alter metabolism, or change human physiology, it is powerful enough to harm.

Marketed for longevity and wellness benefits, the unproven therapies are sold through a grey market online. Compounding pharmacies say they should be able to make them legally to…