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.
Reflect too on what you're moving away from as you withdraw completely: 1  Alcohol (ethanol) is used in adhesives and disinfectant to break down cells, and that's exactly what it does in your brain. 2  Heavy drinking causes a drop in testosterone levels, testicular shrinkage, and impotence in men.