Erectile dysfunction (ED) does not happen to all guys. It happens a lot, especially as men get older, but a lot of men can keep their erections healthy their whole lives. ED can be caused by a number of things, such as physical problems, lifestyle choices, mental health issues, or side effects of medications. But not all guys will experience it, and some may only feel it sometimes or for a short time. Maintaining a healthy lifestyle, taking care of underlying health problems, and getting the right medical care can help people who already have ED avoid or deal with it. general, ED is common, but not all men will get it. With the right care and attention to their general health and well-being, many men can keep their sexual function at a good level.