Fathers aged above 35, his unborn child at risk: Doctors warn

July 7th, 2008 - 6:47 pm ICT by Bupha Ravirot  

Men who wait until their mid-30s to start a family are more likely to lose their unborn child to miscarriage.

A research study conducted on thousands of couple shown possibilities of miscarriage start to rise once a man age near 35 and the risk doubled by he age of 45.

It is not just woman who needs to concentrate on biological clock. The large scale study revealed the a man’s age when he is becoming a father too effects his unborn child.

“people say men are fertile into old age, 90 even”
“That may be true sometimes, but the product is different and there are more semen abnormalities as age advances. It is necessary for men to try to have children before the ages of 40-45. said Jacques de Mouzon, of a French National institute for Medical research.

Dr de Mouzon and colleagues tracked the progress of more than 12,000 couples having artificial insemination over a five-year period. In line with previous studies, they found the pregnancy rates fell and the miscarriage rates rose with the woman’s age. However the analysis also shown that ages of men who are going to be a father have a clear effect Dr de Mouzon and colleagues tracked the progress of more than 12,000 couples having artificial insemination over a five-year period. In line with previous studies, they found the pregnancy rates fell and the miscarriage rates rose with the woman’s age.

Regarding a numerical information, early 30s men has 16.7 % risk of miscarriage or 1 in 6 but men aged between 35-39, the risk rosed up to 19.5 % or 1 in 5. By the age of 45, rate of miscarriage risen up to 32.4 % or 1 in 3. The chances of a woman getting pregnant were also affected by the man’s age.

The chances of a woman getting pregnant were also affected by the man’s age.

“Until now, gynaecologists only focused on maternal age and the message was to get pregnant before the age of 35 or 38 because afterwards it would be difficult.But now the gynaecologists must also focus on paternal age and give this information to the couple.” said Dr Stephanie Belloc of the Eylau fertility clinic in Paris.

For British men, in 1971 the average age of new fathers was 29.2 . By 2003 it had risen to 32.7. In all, a third of babies are born to men aged 35 and above.

Studies shown that a father’s age has a long term effect on his child health. Down’s syndrome is also one of the chromosomal abnormality due to ages of parents. Older fathers are up to five times more likely to have children with Down’s syndrome and up to twice as likely to have a child with a cleft lip.

Children of older fathers also run an increased risk of heart defects, autism, schizophrenia and epilepsy, and are almost twice as likely to die before adulthood.

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