brain aging tied to X chromosome

[tllwd]

Female mammals typically carry two X chromosomes — one from each parent — and a new study suggests that the maternal X is linked to faster brain aging.

The research highlights a potential fundamental difference in how males' and females' brains age. The research was conducted in mice, but if the findings translate to humans, they could point to sex-specific drivers of cognitive decline and, eventually, ways to prevent or treat them.

"Females show resilience in many measures of aging," said senior study author Dr. Dena Dubal, a professor of neurology and the David A. Coulter endowed chair in aging and neurodegenerative disease at the University of California, San Francisco (UCSF). For instance, they tend to live longer than males and have lower rates of various forms of dementia. One exception is Alzheimer's disease, which affects females at higher rates, but even so, some studies suggest that females survive longer with Alzheimer's than males do.

[Bobby]

Males are killed by testosterone - it even makes them go bald.
It not only destroys hair, it attacks all their bodies - every organ.

Eunuchs live longer.

[tllwd]

Is 93 years old Mr Murdoch a eunuchs?

[Jasin]

The second X of the female is like a repair kit.

The Y in the male is like a death defying trapeze act.

[tllwd]

Some unfortunates have extra Y

jacob syndrom.gif