Your chronological age is just a number. Biological age, measured by organ function and aerobic capacity, is what actually matters. Four habits cut mortality risk by 40% in people 45-64: avoid obesity, don't smoke, exercise regularly, eat more fruits and vegetables.
Chapters
How do we make our cells younger? Just because we happen to have this many birthdays doesn't necessarily mean our body is functioning as if it could be worse. We could have accelerated aging and that we really should have the heart and the kidneys and the liver of a 50 year old, but they're actually functioning like a 60 year old. Or alternately, yeah, I've had 50 birthdays, but, you know, I have the aerobic capacity of a 40 year old. So there's lots of different ways to measure biological aging. Bottom line is that we really have tremendous control over that leeway. That's cool. Even in people's 80s, there's still literally years years left on the table, healthy years left on the table just by simple, basic lifestyle changes. Those few things I mentioned before, not being obese, not smoking, regular aerobic exercise and more fruits and vegetables can over the subsequent four years, if you're between the ages of 45 and 64, decrease your risk of all cause mortality by 40. Wow. Meaning your risk of dying by anything over the next four year by 2028, you want to reduce your risk by 40, just do those four things.