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Biological Fertility Clocks Start Winding Down in Men too

by Tanya Thomas on October 28, 2008 at 10:26 AM
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 Biological Fertility Clocks Start Winding Down in Men too

The biological clock, like all other physiological functions, is also shared between man and woman, says a new study on the topic. But the surprising news is that not just the fairer sex, even the alpha male suffers a drop in fertility levels after reaching late thirties or early forties.

The study found that male fertility begins to decline when they reach their mid-30s, suggesting that biological clocks are found in men as well as women.

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According to the scientists, men who wait until their 40s before starting a family, have a greater chance of their partner having a miscarriage, owing to the poorer quality of their sperm.

A Sydney IVF clinic carried out the research on 3,324 men over a four-year period.

"Drops in fertility from the age of 35 have been traditionally thought of as a fact-of-life for women but our study shows the same is true for men," the Telegraph quoted Dr Mark Bowman, the director of the IVF clinic, as saying.
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The researchers tested their sperm DNA to assess its "reproductive potential", and found that starting from 35 years of age; there was a significant increase in the proportion of damaged sperm.

Bowman added: "This means that even if a man produces the average of 40 million sperm per ejaculation, many of those sperm will not be able to fertilize an egg normally. He will have a lower fertility potential and be less likely to father a child."

The study provides further evidence that men have a biological clock.

Source: ANI
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