geijlsngi15 Researchers said men should be advised about the potential problems in order to help their personal decision-making when it came to having fathering children at older ages.
They warned that advancing paternal age posed a risk of 'numerous public health and societal problems'.
Among well-known older dads are Simon Cowell, 54, whose son was born earlier this month, and comedian Frank Skinner whose first child was born in 2012 when he was 55.
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