People often ask me why we nutritionists keep changing out minds! One year, carbohydrate is wonderful, the next year it's not. One year, fat is a no-no, the next year, it's only saturated fat that we should worry about, the other fats are ‘good' fats that are OK to eat and enjoy. Protein was ‘forgotten' for some years, now it's back and considered important for satiety and weight loss.