Paternal Age Over 40 Years: The “Amber Light” in the Reproductive Life of Men?

Abstract excerpt

In industrialized countries, many couples are choosing to delay childbearing, and the proportion of couples having children after age 30–35 years has increased. This has highlighted the effect of age on reproductive failure (van Balen et al, 1997). The effects of maternal age have been thoroughly investigated in the past few decades, and a major effect of maternal age over 35 years has been demonstrated on...

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