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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.
A: Over age 30, thereâs a decline in menâs health, at least hormonally. Since we know thatâs associated with sperm production and possibly genetic abnormalities, thatâs when it starts, but itâs gradual. If a couple is both over the age of 35, there should be increased awareness that genetic testing is needed. Q: What can older men do? A: If you are over 35, you should do everything you can to decrease your likelihood of having abnormal sperm or genetic abnormalities.