This suggests it's not due to healthcare effects: though healthcare for the rich is surprisingly bad in the US, I don't think it's so bad as to be on par with

This suggests it's not due to healthcare effects: though healthcare for the rich is surprisingly bad in the US, I don't think it's so bad as to be on par with the poorest Western European groups. It suggests that the cause is something else, like living far from extended family or eating synthetic imitations of food.