FAQs about erectile dysfunction (ED)

What is Erectile Dysfunction (ED)?
Erectile dysfunction (ED) happens when it is difficult to get an erection or maintain one firm enough for sex. Many men experience ED occasionally. When a man can’t get or keep erections more than half the time, he has an ED condition. It’s estimated that ED may affect up to 30 million men. Poor ability to maintain a firm erection is often the first symptom of ED and signals the need for a thorough cardiovascular evaluation.
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