Wasn't meant to discount what you wrote, and obviously the paper you linked carries a lot more weight. There are just issues with self reporting and calorie co

Wasn't meant to discount what you wrote, and obviously the paper you linked carries a lot more weight. There are just issues with self reporting and calorie consumption, plus I just have a hard time believing that someone on an actual low calorie diet can be extremely overweight, but this may just be my own bias. I don't have much outside of personal anecdotes. Nutrition is complex and from what I've read (and what you linked) there is large variation among types of calories, but I haven't read anything suggesting this is more important than the number of calories themselves. My impression is that it does have an impact, but the volume of calories consumed is the determining factor.