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.
Alcohol can also increase the release of beta-opioid-endorphins from the brain and stimulate prolactin release 53, both of which can negatively affect testosterone production. Oxidative damage increases thorough the body in response to alcohol consumption 54, this leading to localized reduction of testosterone in the gonads and also indirect reduction via increased cortisol levels.