Testosterone is a vital hormone for both men and women, though mostly linked to men’s libido, testosterone is found in both sexes since birth. In females, it is produced in a very minimal amount and plays an optimal role in boosting the sexual drive, energy and physical stamina. The functions of testosterone in men are to Ketosium XS Keto evelopment and sustenance of overall men’s health. Men in the TOM study got different doses, depending on how much it took to bring their blood levels of the testosterone, a steroid hormone, up to a target range. Cardiovascular problems cropped up in men at all dose levels, but they seemed to be more common among those who got higher doses.