If you have ever been concerned about your penis size, you're not alone. The size of the male sex organ has long been thought to be an indicator of a person's testosterone levels and sexual abilities.

Many people wonder what the average penis size is. The truth is that penises are like any other body part and vary in shape and size. One study found that the average penis size is about 3.9 inches (9 ...

A typical prostate is about the size of a walnut, but prostate enlargement is common with age. The prostate is a part of the reproductive system. It’s a small gland positioned in front of the rectum, ...