The best diet for weight loss maintenance, say researchers at the Faculty of Life Sciences (LIFE) at the University of Copenhagen, is one that is low fat, high in protein and low in food with a high "glycemic index."
The glycemic index is a measure of a food's ability to raise blood glucose levels. Generally, raw or unprocessed foods have a low GI and take longer to digest than refined foods such as white bread and sugary foods.
In fact, researchers say that by avoiding high GI foods and eating more lean meat and beans, dieters can eat as much as they like without gaining weight.