There are essentially two reasons why young men can suffer from erectile dysfunction. The first is an underlying medical condition that affects the whole body, and thereby also the man's ability to have an erection. These underlying diseases can be diabetes or heart disease, for example. The second category has erectile dysfunction as the result of unhealthy lifestyle choices. Most of these men are smokers or heavy drinkers. Illegal drugs, and in some cases prescription drugs, can also lead to impotence.
In addition, obese young men are more likely to have erectile dysfunction as well. Smoking leads to impotence because it clogs up the arteries and weakens the ability of the body to pump blood around. Of course, blood and properly functioning of vessels is needed for a man to establish an erection, as most readers will be more than aware of! Smoking is relatively easy to "cure", in difference to, let's say, Diabetes Type 1. If you are interested in quitting smoking, feel free to read our article on the topic. Even though it was written for women, the techniques that make the process easier still apply to you as well.
Like smoking, diabetes, heart disease, and obesity all sometimes lead to erectile dysfunction for the same reason a reduced ability of the heart to pump blood around the body. Drugs and drinking do it in a different way; by depressing the central nervous system. If you are on prescription drugs for medical conditions, do talk to your doctor if you are experiencing erectile problems.