When I see the word testosterone the first thing that comes to mind is it has to do with sexual function. It is true that testosterone regulate healthy sexual function in pubescent and adult males but it this is not all of this. Testosterone also plays a vital role in both men and women's health.  Did you know that having a low level of testosterone makes both men and women susceptible to osteoporosis?  Testosterone protects bones, muscles and tissues and prevents osteoporosis while promoting sexual desire.  As we grow old, testosterone production decreases, but nothing to worry about as there are testosterone supplements that are available in the market today.