New suggests that people's genes are key to helping stay slim. A study from Cambridge University in the U.K. discovered that people had DNA that contained variants which helped them stay slim and variants linked to being overweight. Researcher Sadaf Farooqi, of metabolism and medicine, said: "We've found that there are associated with thinness." She added: "Genes play at 40 per cent of a role in people's weight. It's much than people realize." This might help explain why some people are naturally skinny while others have big with keeping their weight down and seem to pile on the so easily.
The study is published in the PLOS Genetics. The researchers said they undertook the to find out why so many people struggle with their . Over 30 per cent of American adults are obese, while a 94.5 per cent of on the South Pacific island of Nauru are overweight. Professor Farooqi said she wanted to help people who are struggling with their . She said: "It's easy to rush to judgment and criticize people for their weight, but the shows that things are far more complex." She added: "Healthy, thin people are thin because they have a lower burden of genes that increase a person's of being overweight and not because they are superior."