Biological clock ticking for men too

[China]

Biological clock ticking for men too

By Sophie Scott

Oct 22, 2008

The drop off in fertility for women after the age of 35 is well known. Now Australian researchers have found that men face a similar decline at the same age.

Sydney IVF researchers took sperm samples from more than 3,000 men and their DNA or genetic make-up was examined.

Mark Bowman from Sydney IVF says they found older men had less chance of fathering a child.

"They cannot take fertility absolutely for granted, there is also an impact of male age on fertility," he said.

Dr Kylie de Boer says the samples showed that as men age their sperm starts to fragment or break down, which makes the sperm less viable for fertilising the egg.

The older the man, the more damage, researchers found.

"The rate of DNA fragmentation of sperm increased with age and there was a significant DNA damage to sperm when the man was above the age of 35," Mr Bowman said.

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[PokerPacker]

and yet you don't hear us making a big deal about it.

[gbear]

you mean we don't say we want MORE sex? Would anybody hear the diference between "Let's do it because my body says it's time" and "Let's do it. Believe me Honey. It's time!":laugh: