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.
Plus, there have been many studies done on people that show that marijuana does not really have an affect on sperm count. So if you think that your boyfriend's sperm count may be low from smoking, I guess it technically could be, but the results should not be lasting.he doctors told my husband that all the Marijuana he smoked affected his sperm count -- well he's been smoking for 6 years and I can speak from experience that it doesn't affect your sperm count at all.