What is the main cause for impotence?

Q: What is the major cause for impotence in humans? Is addiction to drugs a cause? To what extent is genetic inheritance a factor? Impotence, it is said, is caused by diseases such as TB, diabetes, stomach ulcer & administering of drugs for these ailments. Is this true? Are there drugs in allopathy which could cure this problem? If so, how efficacious are they?

A:The major cause for impotence in humans is psychogenic. Every man suffers from it at one time or the other but the duration varies.Yes, addiction to drugs is a cause. Genetics as a factor is rare.Yes it is true. Yes, there are drugs available to cure this problem and these are quite effective. Very effective.