I am now cynical about all dietary advice. In Western countries the sort of people who eat bacon and burgers tend to have very different lifestyles from those who eat sushi. They are more likely to smoke and less likely to exercise. They are also likely to be less well educated and more likely to be poor and work at unhealthy jobs. Are all these factors taken account of in this study? For example, as I understand it, black people in America eat a lot of white meat (chicken which is supposed to be healthier than red meat) and yet their health tends to be poorer than average.