According to this study, the main reason is high blood pressure itself and arteriosclerosis of the penile artery, the main artery bringing blood to the penis. Since adequate amount of blood is essential for the penis to become rigid, penile artery disease makes it difficult to achieve an erection. Unfortunately, treating high blood pressure does not improve erections. Just the opposite - many blood pressure drugs have a strong negative effect. Some studies reported improved erections with the use of Yohimbe bark, Ginkgo biloba, Maca , vitamin E and other anti-oxidants.
Chelation therapy is also helpful in many cases.
Y es say doctor's, there is something known as a mid-life crisis. This is often a time in life when stability has been achieved and the struggles that were once a large part of life are now at an end. This new awareness that a life change has taken place can sometimes trigger a crisis. For some men, new found stability may signify an end to vitality or youth. Many men find that after spending a lifetime working towards the goals of family and peers, the end result is unfulfilling.