Is It Normal for One Testicle to Be Bigger?

Teens > Q&A > Guy Stuff > Is It Normal for One Testicle to Be Bigger?
Is It Normal for One Testicle to Be Bigger?

I'm 15, almost 16, and I've noticed that one of my testicles is bigger than the other one. Is there something wrong?
- Brandon*

It's normal for teen (and adult) guys to have a slight difference in the size of their testicles. So there's probably nothing wrong. A normal size difference is about the equivalent of half a teaspoon — and usually the right testicle is larger than the left.

Talk to your doctor if it seems like there's a big difference in size or if you have pain or a lump in one of your testicles.

Reviewed by: T. Ernesto Figueroa, MD
Date reviewed: June 2012

*Names have been changed to protect user privacy.

Related Articles
Note: All information is for educational purposes only. For specific medical advice, diagnoses, and treatment, consult your doctor.
© 1995-2014 The Nemours Foundation/KidsHealth. All rights reserved.