Of course life expectancy is going to vary by county, because the variables that contribute to life expectancy; income, lifestyles, dietary habits, quality of h

Of course life expectancy is going to vary by county, because the variables that contribute to life expectancy; income, lifestyles, dietary habits, quality of health care, and access to health care are vastly different. I assume you'd need a broad cultural shift in attitudes about food consumption, obesity, physical activity, and vast health care networks that ignore income to change it.