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.

Keersten Fitzgerald does not work for, consult, own shares in or receive funding from any company or organization that would benefit from this article, and has disclosed no relevant affiliations ...

Debbie Wolfe is an author and content creator. In addition to being a contributing writer at Forbes, she writes for other leading online home improvement, DIY, and garden media outlets and online ...

Medically reviewed by Matthew Wosnitzer, MDMedically reviewed by Matthew Wosnitzer, MD Genetics plays a significant role in ...