Japan has the longest life expectancy in the world and there is almost no obesity. 42.5% of Americans are obese, 4% in Japan, almost no childhood obesity. It's not genetic, as Japanese people in, say, Hawaii, have the same obesity rate as everyone else. Kids are not allowed to bring packed lunches, they eat at school and the food has to be fresh. Seems to work... https://www.youtube.com/shorts/LSZf6TppKdo