I've seen such studies too, and I'm sure that with sufficient discipline, you could manage something like a mediterranean diet (rich in pasta dishes, fruit, veg

I've seen such studies too, and I'm sure that with sufficient discipline, you could manage something like a mediterranean diet (rich in pasta dishes, fruit, vegetables, low but not zero on meat) but without wine, without pancetta, without mozzarella, etc. But I don't think that's what mostly happens. The friends I've had over the years who started focusing on avoidance either failed (by giving up the attempt) or eventually ate mostly prefab food. Without alcohol, to be sure. Anecdote alert: I'm sure abstaining from alcohol hasn't hurt the acquaintance I saw this weekend, but she doesn't look healthy. She's focused on abstention, and IMNSHO a focus on abstention is not the path to a well-rounded diet. Neither is a beer can and a bag of peanuts, of course.