If you have low testosterone, it could affect your sex drive. But low testosterone might not be the only reason to blame if you have no libido. iStock/Getty Images You have low testosterone when your ...

In the shaft of the penis, there are two side-by-side chambers of spongy tissue called the corpora cavernosa. They're mainly responsible for erections. Just below them is another chamber called the ...

Many people do not realize that erectile disorder (ED), the inability to achieve or sustain an erection sufficient for intercourse, is extremely common. Today, 1 in every 10 men in the United States ...

As many writers have observed, the causes for male impotence and erectile dysfunction (ED) fall into three categories: physical/medical, lifestyle, and psychological. But ultimately the dynamics of ...

The sphincter of Oddi is a muscular valve in the digestive tract that opens and closes. It allows digestive juices, bile, and pancreatic juice to flow properly through the ducts from the liver and ...

Low testosterone may affect sexual desire and erection ability, with significant effects typically occurring at very low testosterone levels. High testosterone usually doesn’t cause erectile ...