What is the main cause for impotence?

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?


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.