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17th October 2018
04:10pm BST

"We know that men are the cause of up to 40 or 50 per cent of all infertility," he tells us.
The reason for this, he says, is the same as the reason we so many women struggling - age.
Men are waiting longer to start their families and lots are surprised to find that they have trouble when they do start to try.
Failing to conceive isn't the only issue - delaying fatherhood is associated with a number of health issues for their children, according to Dr Fishel.
"We also know men have a biological clock," he says. "A man’s biological clock is a little more insidious. Women’s is overt – they’re either having a problem getting pregnant or they’re having miscarriages. "A man’s is slightly different. There have been links to leukaemia, for example, to autism, for example, in children being conceived by older men."Indeed, a 2011 study found that the risk of autism in children was 28 per cent greater among dads in their 40s and 66 per cent greater among dads in their 50s, compared to men who had become fathers before 30. Other associated issues include breast cancer, epilepsy and achondroplasia, a disorder that causes dwarfism. What to do? Men are advised to start trying before 4o but there are other things to bear in mind.
"We know that simple lifestyle changes can also boost a man’s fertility considerably," Dr Bart Kuczera from Beacon CARE Fertility said earlier this year.
To be on the safe side men should eat a healthy diet, limit drinking and avoid smoking.
They should also avoid anything that could cause their groin to heat up, including:
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