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A new study found that leanness is present in genes, allowing many people to remain slim without resorting to a strong will and a severe diet.
Scientists, led by the University of Cambridge, have identified a series of genes that could speed up an individual's metabolism or help burn fat faster.
These genes have been found in more than 16,000 thin but healthy people. About two-thirds of these people would have genes that make them less interested in food.
In 40% of cases, the nymphs said they liked the food and eat what they wanted without gaining weight.
The researchers now think that these people have their own genes. So they plan to conduct a separate study to see what happens in their body when they eat a snack.
This can lead to the development of new drugs that mimic the effects of "thin" genes, which can be used to help less fortunate people maintain their weight.
"The study shows for the first time that these thin people are healthy because they have a lower gene level, which increases the chances of losing weight," said Professor Faroo Farooqi , lead author of the Wellcome-MRC Institute of Metabolomics study at the University of Cambridge.
In the largest study ever done on leanness genes, researchers recruited lean British participants (in their forties) in good health, excluding those who exercised more than three times per week.
The researchers collected saliva samples for the 1622 series of the 1622 genes from the cohort, then compared them to more than 10,000 middle-aged people and about 2,000 people with severe obesity.
They discovered four new genetic regions associated with thinness and confirmed that two regions were already present for Asians.
The study, published in the journal PLOS Genetics, revealed that 18% of thinness is inscribed in our DNA, which is why parents of naturally thin parents have the same type of body.
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