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Effect of age on male fertility. While the effect of age on a man's fertility is not as significant as it is with women, there is a decline in the quality of sperm after the age of 45. After this age, it does tend to take longer for men to cause a pregnancy and the chance of having a baby with a health problem does slightly increase.
Male fertility can be negatively affected by regular alcohol use and abuse. Alcohol has been linked to abnormal liver function and a rise in estrogen levels in men, which can potentially interfere with normal sperm development and hormone levels.ithout ovulation, a woman cannot become pregnant. Alcohol use and abuse can also lead to abnormalities in the endometrium, the inner lining of the uterus, where a fertilized egg is implanted and then grows.