when to see a doctor

Noticing erectile changes can set your mind racing — and one of the first questions men ask is, “Is this a sign of something bigger?” Most of the time, ED is common and very treatable. But because the penis relies on healthy blood vessels, nerves and hormones, ED can occasionally be the body’s early messenger that something else is worth a look. Here’s how to tell when it’s nothing to worry about, and when it’s worth getting checked.