It's not just that, it's all the health benefits – helping to reduce heart disease, osteoporosis, diabetes and dementia because it reduces inflammation.
Even I can now see that that is such a simplistic framing of a really complex area.
All those things are very separate conditions. And there is more or as much evidence for lifestyle factors (depending on which condition you're looking at.)
Exercise in particular is extremely anti inflammatory. That's why cancer and heart op patients are encouraged to do so. It is definitely much harder to exercise on the same way as you did when you're younger. And the more deconditioned you are, the more you need to build up very slowly. But that is the same for men and women generally
Women also need to follow very different guidelines for exercise to men, based on their physiology. For example women must eat within 30/40 mins after a proper workout/ heavy lifting, as well as a small amount before. If you're actively exercising, intermittent fasting is not helpful. "Time restriction" is fine - which is just normal eating, have a break over night for 12-13 hrs. Women also need a decent breakfast. I found Stacy sim's advice extremely helpful on all this. And feel I could have done with knowing about it all a decade ago as peri started.
I've had to hide and unfollow some social media people/ groups because the shouting about hrt being "the only thing to work" is really distressing (as I believed that thanks to LN) and I now know is BS. She was right to re start the conversation and campaign for women to access via the nhs. But that's very different to some of the claims she makes.