Life expectancy favors biological females, irrespective of dietary factors.

The theory is that when something goes wrong with the X chromosome in women, there's a backup. With XY, males do not enjoy that safeguard.

This continues into maturity; 1.6 times the number of men died from covid-19 compared to women.

Same for heart disease, really, all chronic diseases.

There are studies going in every direction(nobody likes to be told their bodies don't operate as well as another's), but those stats are what we're working with.