You probably already know that smoking is bad for your lungs. Did you know it also makes you more likely to get high blood pressure and heart disease?
The nicotine in cigarette smoke is a big part of the problem. It raises your blood pressure and heart rate, narrows your arteries and hardens their walls, and makes your blood more likely to clot. It stresses your heart and sets you up for a heart attack or stroke.
If you have high blood pressure, you may experience erectile dysfunction.
For a healthy young man, erectile dysfunction is typically not a problem. As you age, however, you may notice some changes. Maybe it takes more coaxing to get erect than it used to. Sometimes it may take more direct stimulation of the penis, whereas merely a daydream or the suggestion of sex was once enough. Or perhaps your erection isn't quite as firm as it once was, but it's still good enough. These are normal changes.