Unfortunately, a lot of mistruths and downright lies about erectile dysfunction (ED) get perpetuated despite plenty of available scientific evidence. ED, defined as the persistent inability to get or keep an erection that's hard enough for sex, is a common health problem that affects men of all ages. Knowing the facts about ED can help you get the necessary treatment for a more fulfilling sex life with your partner.

Lie 1: ED happens only to older men.

While it's true that erectile dysfunction is more common among older men, especially those older than 40, ED can happen at any age. ED may affect up to 8 percent of men ages 20 to 29 and 11 percent of those ages 30 to 39, and up to 52 percent of all men experience some level of ED, according to the Massachusetts Male Aging Study in the 1990s.

It's clear that age isn't the only reason behind ED. Other