Erectile dysfunction and decreased libido As men get older, there is a natural decline in testosterone and thus a corresponding decline in libido. Testosterone is essential for the regulation of ...

Axiron, an underarm gel that rolls on like deodorant, is one drug used by men struggling with symptoms of growing older associated with low testosterone such as poor sex drive, weight gain and fatigue ...

This article was reviewed by Felix Gussone, MD. Key Takeaways: In the U.S., testosterone is a controlled substance, so you’ll need a prescription to acquire it. While you take it, your provider will ...

Three forms of testosterone are found in serum: sex hormone-binding globulin (SHBG)-bound (60%-70% of total), albumin-bound (20%-30% of total), and free (1%-3% of total). SHBG-bound testosterone is ...