Research breaks down average penis size, what influences growth, and what studies say about size and sexual satisfaction.

*Medical researchers claim there’s an increase in the average length of erect penises in males around the world. The researchers analyzed penis-related data from over 55,000 men who were a part of ...

Some good news, guys: A new analysis of penis sizes will help reassure most of you that you're normal, researchers say. Many males worry about their penis size, even when there's no cause for concern.

The average penis size is about 5.2 inches in length when erect and 3.6 inches while flaccid. It is also about 4.6 inches in girth while erect and 3.7 inches around while flaccid. Larger penises may ...

Yes, penis size is genetic, but it can still vary a lot within families. Genetics, hormones, and early nutrition can influence penis size. Race and masturbation do not affect penis size, despite ...