Preventive health basics
Preventive care is the part of healthy aging with the most formal evidence grading behind it. The US Preventive Services Task Force assigns A and B grades to services with high or moderate certainty of net benefit, and those recommendations - not general wellness advice - are the right reference for what applies to you at what age.
Educational content only - not medical advice. In a crisis, call or text 988 (US) or your local emergency number. See crisis resources.