Here in the US I keep bumping into the idea that you do not have to be lean to be healthy. There are a great number of obese people who would say "I am healthy" if asked. They have not yet been diagnosed or had a crisis from a disease linked to high BMI--but the majority of them will. Data is beginning to pile up in favor of a "calorie restricted" diet for longevity, and for the destructive effects of insulin.