A new study conducted by researchers at University of Sydney's Charles Perkins Centre suggests that one of the reasons for overeating could be the lack of protein in modern diet.
The researchers said that the desire to consume protein is so powerful in humans that they continue to eat until they get the required amount of protein into their bodies. However with modern diet containing low amounts of protein and rich in carbohydrates and fat, people tended to overeat, which could be one of the reasons for rising obesity rates across the world.
"We found that regardless of your age or body mass index, your appetite for protein is so strong that you will keep eating until you get enough protein, which could mean eating much more than you should. When you consume things like soft drinks, which are fairly low in proportion of protein but high in calories, your energy intake will increase because you'll need to keep eating to get the protein you need", lead researcher Dr Alison Gosby said.
The study has been published in the online edition of the journal Obesity Review.