ED is defined as trouble getting or keeping an erection that's firm enough for sex.

Though it's not rare for a man to have some problems with erections from time to time, ED that is progressive or happens routinely with sex is not normal, and it should be treated.

ED can happen:

• Most often when blood flow in the penis is limited or nerves are harmed

• With stress or emotional reasons

• As an early warning of a more serious illness, like: atherosclerosis (hardening or blocked arteries), heart disease, high blood pressure or high blood sugar from Diabetes

Finding the cause(s) of your ED will help treat the problem and help with your overall well-being. As a rule, what's good for your heart health is good for your sex health.