The first stat that ever reeeeally impressed me is almost 50 yrs old, but pertinent to this.
When heart disease was still ahead of cancer as America's #1 health issue (that a whole nuther ball o' wax) and they were 1st considering the impact of cholesterol, they published some rankings which pointed out that the country of Ireland had the highest satfat intake in Europe, but the 2nd lowest rate of heart disease.
I remember that because i immediately knew why. The lady who sponsored my family over from the ol' Sod left a trust which sent me back to Ireland for a couple wks each summer from ages 12-21. In the 60s & 70s, Ireland was pretty much cut off from the world (except in its response to the IRA). City, town or village you did what your father did when you grew up, raised a passel of kids, spent an equal amount of time with pub & church activities and the whole town came to see you off when they planted you. Saints preserve us.
They lived on fat - watched every breakfast as they fried up a side of bacon, cooked their eggs in the grease, then poured the pan grease over their spuds - to keep the wet from reaching their bones (but there were as few fat Irishmen as there was many fat Irish-Americans), but there was one element entirely absent from their lives. Stress. An utter lack of mobility, well-defined roles within family & community and the freedom to punch anybody they pleased and have it forgiven by Holy Communion kept their lives free from what most easily kills people. Pretty sure a similar gestalt is at the base of why the northern Euro countries score so high on life scales now and it's likely we're going to have to re-learn those lessons during the drone economy.
ETA: America wants stress, needs stress, lives on stress alone, creates stress to give its citizens motive intent and the urge to buy things they don't need. That's why we cant compete with other countries on contentment, value of life