Can't wait for breaking a hip at 80 to be a thing of the past. Bone health is also a contributor in life expectancy and health of a person altogether. I read a study if you can assure your bones are healthy you can assure your health longterm.
Is bone health like grip strength? Grip strength correlates with life expectancy because it is a good proxy for overall health, but if you just work on your grip strength you won't get much healthier.
No, because if you break a hip, you lose a ton of mobility, which will cause an avalanche of problems.
Not entirely, for a pretty obvious reason: breaking a bone at an advanced age is not infrequently the beginning of the end. Not enough to make it primary (in other words, your point about bone density as a correlate rather than a determinate is basically correct), but enough that improving just bone health on a widespread basis should help with life expectancy as well.
What is so special about grip strength? I never heard anything about this before your post.
It was a thing in the media a couple of years ago. Researchers noticed a strong correlation between grip strength and healthy life expectancy in the old, so there were lots of pointless articles published about improving your grip strength.
Just from memory, but it has a significant correlation to testosterone levels. Also, the disparity in grip strength is especially large between men and women, when compared to other strength indicators.
Try googling this it is kind of interesting. Link between bone density and skin elasticity. You will find that the denser the bones the healthier the skin. We may find people who are 70 looking like they are 50.
That sounds like they're both correlated with oestrogen levels.
Wasn’t the best contributor to life expectancy vascular & endothelial health?