Secret to women's longevity is in the genes: Having two X chromosomes promotes survival, study suggests

When it comes to the secret of long life, the answer may be in your genes.

Women live longer than men, a study suggests, because they are lucky enough to have two X chromosomes.

It has been said women outlive men because of stronger immune systems and a tendency to smoke, drink and fight less. Females have XX chromosomes and males have XY. But the Y chromosome does little except create men’s masculine features, like facial hair, while the X contains many of the genes related to the brain and survival.

When scientists engineered biologically male mice to have two X chromosomes like a female, they lived longer.

Dr Dena Dubal, senior study author, from the University of California, San Francisco, said: ‘It didn’t matter if they had ovaries or testes.

'As long as they had XX, they escaped early death during ageing.’


https://www.dailymail.co.uk/health/article-6506151/Having-two-X-chromosomes-promotes-survival-study-suggests.html

Women live longer than men...

because they drive their menfolk to an early grave !!!

You have a point !

Married men don't really live longer than their single counterparts..

It's just that their wives make it feel that way  !!!