In young men, the prostate is about the size of a walnut, but it slowly grows larger with age. If it gets too large, it can cause problems, although the size of the prostate doesn't always cause symptoms. A large prostate is common for men over the age of 50.
Prostatitis and benign prostatic hyperplasia are benign, or non-cancerous, prostate conditions that many men experience. You can find out about these conditions and how they're treated in this section.