By A Mystery Man Writer
Researchers believe that women stay away from male relatives when they are most fertile for evolutionary reasons.
Risks for Men Becoming Fathers After 50
Why have four children when you could have seven? Family planning in Niger, Working in development
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These strangers all have the same biological father: the fertility doctor who helped their parents have a baby
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Aspiring Fathers Open Up About the Emotional Toll of Fertility Issues - The New York Times
The pros and cons of being an older dad
Does Female Masturbation Cause Female Infertility?
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Can a father's medication affect fertility and pregnancy?
Infographic: The Future of Fertility Treatments and Family Building in 2021 - Dr. Tanya Williams
There are many causes of - Carrot-Top Drugs Limited
Signs of Infertility: In Men and Women