Schistosomiasis (bilharziasis) is a major human disease caused by three species of the genus Schistosoma, known collectively as blood flukes. Africa and western Asia (e.g., Iran, Iraq) are endemic centres for S. haematobium; S. mansoni also is found in these areas, as well as inâ¦
How Alcohol Damages Sperm. Alcohol can reduce the quantity of sperm a man produces (his sperm count) and the quality of that sperm. One way in which alcohol does this is by preventing the body from absorbing zinc in the normal way. Zinc is found in high quantities in sperm.
1. Drinking can make women less fertile. Alcohol can affect menâs and womenâs reproductive systems, and damage fertility (1). For women it causes imbalances in the hormonal system that controls reproduction. Even small amounts of alcohol can affect a womanâs menstrual cycle and reduce the chance of conceiving.