Androstenedione is one of those supplements that was peddled to athletes for years as a quick path to bulging muscles and high testosterone levels, but it comes with some serious side effects.

Analytes included androstenedione, total testosterone, dehydroepiandrosterone sulfate (DHEAS), oestradiol, and sex hormone binding globulin (SHBG). Lipid concentrations, weight, body composition, ...

PURPOSE: We determined the incidence of defects in 3 enzymes, namely 3beta-hydroxysteroid dehydrogenase, 17alpha-hydroxylase and 17,20-lyase, on the testosterone biosynthetic pathway in boys with ...