Alcohol can impair human reproduction and results in reduction of male fertility at different levels. Some studies incriminated alcohol to cause testicular damage leading to reduction in testosterone secretion and diminution of sperm counts. Additionally it causes suppression of liver function; which is the source of elimination of many toxic materials in the body. When these toxic elements accumulate (due to liver malfunction) they result in deleterious effects on testicular function and ultimately affect sperm production. One additional adverse effect is the accumulation of the normally existing small concentrations of estrogens, resulting from reduced elimination by the defective liver, and therefore the build-up of estrogen associated with decline in testosterone are incriminated to negatively affect male reproduction and sexuality.
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