And occupation hazards are also causes low sperm count. People become contaminated with the toxic chemical via food chain. And those who are working in places, where is much exposure to heat or chemical oriented industries are much prone to declining sperm count. However there are more than environmental and occupational hazards that threaten male infertility. Some men posses antibodies against the sperm, which immobilizes or kill them and prevent them from swimming up towards the eggs.
Impotency is the main culprit of infertility.
These all can be treated and cured successfully. In modern medicine medical treatment for male infertility does not have a high success rate and has unpleasant side effects. This simply reflects the modern doctors' ignorance about what causes it, and their knowledge about how to treat it is even more pitiable. Do not loose heart, unani herbalism treats them successfully.