Erectile disfunction arises up, when one of these requirements is not enough. Reasons of origin of erectile disfunction: Aging there is two principal reasons because of those elderly men have this disease. Foremost, for elderly men more often observed such illnesses as, heart, lungs, liver and buds troubles, diabetes and high piesis accompanies that to appearance of erectile disfunction. Diabetes mellitus: this disease appears in 10-15 times more often for men suffering diabetes. 

It turned out from data of researches, that 55% men having erectile disfunction, suffered from diabetes of the first type. High piesis: patients that have a high piesis or atherosclerosis are subject to the large risk of development of erectile disfunction. Yet while it is not known exactly, how it is diseases influences on the erectile function of organism, however, for patients with hypertensive illness, there is mionectic maintenance of nitric oxide in a penis. Cardiovascular diseases is atherosclerosis is a bulge and compressions of blood vessels, as a rule, shows up on all organism of man and assists the increase of piesis, increase of level of cholesterol in blood. Nervous diseases and damage of spinal cord: the damage of spinal cord can become reason of appearance of erectile disfunction. The defeat of the nervous system can appear after a trauma or operation. 

Low level of orchidic hormone: an orchidic hormone (masculine hormone) is needed not only for appearance of libido for a man, but also for establishment and maintenance of level of nitric oxide in a penis. Depression and stress: psychological factors can become reason of violation of erectile function also. Stress, subzero self-appraisal, sense of guilt, depression, sense of fear of failure in sex, behave to such factors. Medications are during application of many medications, one of side effects is violation of erectile function. To such types of medications it is possible to take: medications for treatment of diabetes mellitus, blood high-pressure, antidepressants, tranquilizers and facilities for suppression of appetite. 

The examples of such medications it is been digoxin, amitriptyline et al. Abuse of substances is marihuana, heroin, cocaine and abuse of alcohol, can become reason of violation of erectile function for men. In addition to it, alcoholism can result in the defeat of the nervous system, atrophy and low level of orchidic hormone in blood. There is very close connection between narrowing of coronal arteries at atherosclerosis and appearance of erectile disfunction. For example, for men suffering from atherosclerosis, more credible than all there will be violation of erectile function, what for those men that are not ill cardiac diseases.