NARRATOR: Professor Astrup was running a study to discover the secret of appetite control. To do this he chose sixty shoppers and split them in to two groups. One group shopped for high carbohydrate food, the other group shopped for food high in protein, similar to the Atkins diet but low in fat.
Prof ARNE ASTRUP: One group should eat a lot of, of lean meat from shell fish, fish, poultry and lean meat, and dairy products. And the other group should eat a lot of bread, pasta, rice, fruit and vegetables.
NARRATOR: Both groups were told they could eat as much as they wanted. They should eat to satisfy their appetite just as Dr Atkins advised on his diet. The study ran for a whole year and the results were spectacular.
Prof ARNE ASTRUP: One of the groups was losing much more than the other group. I say it was four or five kilo more.
NARRATOR: When they looked more closely it was clear which group had lost so much weight. it was the group eating a diet high in protein. And the shopping lists revealed why.
Prof ARNE ASTRUP: We could see from the data that the reason why the high protein group had lost more weight was because they had actually consumed fewer calories throughout the study, despite the fact that they had just as the same free access to all the foods they really want to, to eat.
NARRATOR: At last the mystery of how the Atkins diet works may have been solved. It might have nothing to do with calories being lost. Probably nothing to do with ketosis. And apparently nothing to do with burning more calories. Neither does it seem to be due to gorging on fats. The secret to the diets success may be down to something completely different. Protein makes you feel full. Increasing the amount of protein in the diet may control appetite and make people eat less than they would normally. If this research goes on to be confirmed it will be a major advance for science.