An effective way of maintaining weight loss is to eat a high protein/low glycaemic index (GI) diet, with lots of lean meat, beans and low-fat dairy products and fewer foods high in refined starch such as white bread and white rice.

The glycaemic index applies to carbohydrates and is a measure of how fast they are converted to glucose. The lower the GI, the slower the digestion and the greater the level of satiety.