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.
At present, there are several possible ways in which alcohol may raise the risk of cancer. Some of these theories include: Increasing estrogen levels: We know that increased estrogen levels can elevate the risk of breast cancer, and the metabolism of alcohol in the body can increase estrogen levels. Oxidative stress: Oxidative stress - or damage to DNA that occurs via reactions involving oxygen may contribute.