>>1082320But that's really not true.
The Japs have led the lifespan race since around the mid-1800's despite being a heavily urbanized, overpopulated country.
They are leading because of good diet and low pollution levels (despite being nuked twice) compared to pretty much everyone else. That's pretty much it.
Take a look at the most common killers of old people:
>heart diseaseSmoking, lack of exercise, and high-cholesterol diet
>cancerPollution, smoking, maybe diet
>lung disease other than cancerSmoking, pollution, lack of exercise
>motor vehicle accidentOnly like 20% of Japan drives with any regularity due to being heavily urbanized and having robust public transportation and walkable cities
