British researchers informed that now, a machine will guide teenagers to lose that bulge. The machine is designed to train them to form mental connections between how full they feel and portion of their serving.

The Swedish-developed device called mandometer connects a scale which is placed under a dinner plate. It weighs the food left on the plate. A graphic screen that shows the speed of eating is there. A voice instruction tells the speed of eating.

A graph is formed on the screen as the meal progresses at regular intervals. This is then compared to a pattern which is ideal for normal weighing people.

According to the British Medical Journal about 106 people were put under trial and mandometer showed promising results by reducing potion size thereby cutting the weight down and after six months the individuals were put off mandometer.

"The therapy seems to be a useful addition to the rather sparse options for treating adolescent obesity effectively without drugs," wrote study leader Anna Ford in the medical journal BMJ.