Erectile dysfunction means that you cannot get a proper erection. Most cases are due to narrowing of the arteries that take blood to the penis. This is due to a build-up of fatty deposits in these arteries in the same way that heart arteries are affected in people with heart disease. The condition is usually treatable, most commonly by a tablet taken before sex.
Most men have occasional times when they cannot get an erection. For example, you may not get an erection so easily if you are tired, stressed, distracted, or have drunk too much alcohol. For most men it is only temporary, and an erection occurs most times when you are sexually aroused.
However, some men have persistent, or recurring, erectile dysfunction. It can occur at any age, but becomes more common with increasing age. About half of men between the ages of 40 and 70 have the condition. About 7 in 10 men aged 70 and above have erectile dysfunction.
Please visit the following site for further information regarding the condition: patient.info/health/erectile-dysfunction-impotence