Older fathers are no longer unusual. For the past 10 years, statistics show that nearly two-thirds of babies have been born to fathers aged 30 and over.
Delaying fatherhood may offer survival advantages, say US scientists who have found children with older fathers and grandfathers appear to be “genetically programmed” to live longer.
The genetic make-up of sperm changes as a man ages and develops DNA code that favours a longer life – a trait he then passes to his children.
The team found the link after analysing the DNA of 1,779 young adults.
Their work appears in Proceedings of the National Academy of Sciences.