Happily, the answer to your question is no. Although the incidence of erectile dysfunction increases as men age, many men go through life without experiencing any significant difficulties in getting and keeping an erection. WebMD estimates that roughly 20 million American men experience erectile dysfunction, which leaves a fair amount of the country’s male population unaffected.
That said, it should be noted that most men have an occasional problem achieving an erection, but most such incidents do not persist and can usually be traced to overindulgence in alcohol, extreme stress or fatigue, or to the effects of a medication. In cases where medication appears to be the culprit, substituting another drug or adjusting dosage often alleviates the problem.
The key to staving off ED for most men is to follow the same general advice your doctor offers for healthy living: Eat a well-rounded and nutritious diet and maintain a program of regular physical activity.