The way I see it, people in Japan seem to live the longest / most healthy lifestyles generally speaking.

Correlation not causation but here are some of things I’ve noticed:

1. Eat mostly anything - no restrictions on types of food

2. Active lifestyles - people tend to move more.

3. Stop eating before “oh man I’m full”. It’s basically part of the culture here.

4. Sports - see many adults playing into adulthood

5. Go to doctors often. Any slight issue - people get checked out. Btw I never see media mention this.