"Humans have an average life expectancy of 70-75 yearsÂ…with a maximum of around 120 . But what happens if a man marries his first cousin ? It has been shown that life expectancy of such offspring diminishes by 10 years . This is because of the large number of genetic mistakes that happen within the genome Â– which essentially ages the individual ."
"How about the individual 's offspring ? Is a `` subtract 10 years `` gene encoded in the genome just because of one marriage ? Still no evidence ."
"But what happens if a man marries his first cousin ? It has been shown that life expectancy of such offspring diminishes by 10 years ."
"Is a `` subtract 10 years `` gene encoded in the genome just because of one marriage ? Still no evidence ."