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The father’s age also accounted for nearly all of the variation in the number of new mutations in a child’s genome, with the number of new mutations being passed on rising exponentially with paternal age.A 36-year-old will pass on twice as many mutations to his child as a man of 20, and a 70-year-old eight times as many, Stefánsson’s team estimates. Finally, while you may find a bit of gray in the sideburns sexy, keep in mind that a man’s age will affect his parenting style.Studies show that most men experience a 2% drop-off in testosterone production each year after they turn 30.In addition to causing a lower libido, that decrease can also result in changes in mood and emotions, a decrease in strength due to loss of muscle tissue, and an increase in body fat.
As one male writer put it, “We don’t want high schoolers going after middle schoolers or dads going after their daughters’ friends.” Norms vary by culture, but the French came up with the rule that a man should divide his age in half and add seven to get the youngest appropriate age he might date. In addition, his income is climbing rapidly, which increases his MMV, or marital market value.
“The older we are as fathers, the more likely we will pass on our mutations,” says lead author Kári Stefánsson, chief executive of de CODE Genetics in Reykjavik.
“The more mutations we pass on, the more likely that one of them is going to be deleterious.”…Fathers passed on nearly four times as many new mutations as mothers: on average, 55 versus 14.
finds that the age at which a father sires children determines how many mutations those offspring inherit.
By starting families in their thirties, forties and beyond, men could be increasing the chances that their children will develop autism, schizophrenia and other diseases often linked to new mutations.
The reality is that many men date multiple women for the same reasons women date a lot of men.