Life expectancy is related how much younger your wife is !

“Related to life expectancy choosing a wife is easy for men – the younger the better. The mortality risk of a husband who is seven to nine years older than his wife is reduced by eleven percent compared to couples where both partners are the same age. Conversely, a man dies earlier when he is younger than his spouse.”

But the it isn’t the same for women, the greater the gap, the lower life expectancy.