Men should start a family before the age of 35 to avoid the health risk of their children – says a large study.
Researchers who tracked 40 million children have noticed an increase in postnatal complications when fathers reached the mid-1930s and after the age of 45 a stronger increase occurred. For decades, women have been warned about the health risks of their children if they wait until they appear. older to give birth. The new study shows that the same applies to men.
A baby born by fathers aged 35 to 44 years was 5% more likely to give birth prematurely or had low birth weight than children born to men between the ages of 25 and 34.
For fathers aged 45 or over, there were 14% more intensive caregivers, 14% more prematurely born, 18% more people with epileptic seizures and 14% more with low birth weight. If the father was 50 or over, 28% more infants required intensive care, and 10% more newborns had to be put on respirators. Professor Michael Eisenberg of the Stanford University School of Medicine in the US said: "This study shows that a healthy child is a team sport, and the age of the father also contributes to the health of the child, the relationship between advanced paternal age and the chance that the mother will develop during pregnancy . "
The report, published in the British Medical Journal, says the risk factor increases because each year a man gets older, he acquires two new mutations in his sperm DNA.
Previous research shows that women with older male partners need more time for conception and are more likely to miscarry.
But Professor Eisenberg said the absolute risk was still relatively low.
Official figures show that about 18% of children born in England and Wales have a father aged 40 and over and that the average age of fathers in 2016 was 33.3, almost four years more than in 1974. The average age of mothers also increased for four years. up to 30.4 years in the same period. Daily mail