How to biohack your genes to fight laziness and obesity
Loathe exercise? Yearning to swap the barbell for a bucket o' chicken? Without making too many excuses, it might actually be your genes. A paper in Psychology of Sport and Exercise found some people's DNA are more disposed to enjoy exercise than others. It's not just the exercise part that genetics alters: your inability to control your diet, as shown below, is also built on genetic potential. Here's why - and how to swerve it.
Your chubby colleague’s protestations that his propensity for pizza “is genetic” might provoke derisive snorts, but according to new research published in the journalJAMA Paediatric, he might actually be right to blame his parents for his extra tyre. At least, up to a point.
There are 28 known obesity-related genes, and researchers used twin studies to explore the early years weight gain of infants with varying numbers of them. The 25% with the greatest obesity risk were more overweight than those with fewer obesity genes, and also showed reduced "satiety responsiveness"; in other words, they were more likely to keep eating until someone dragged their plate away.
“Some children are less sensitive to internal ‘fullness’ signals in response to food intake, by virtue of their genetic endowment,” says the study’s co-author Clare Llewellyn. “These children are at risk of overeating and gaining excessive weight, putting them at greater risk of obesity.”
Fat kids generally become fat adults, according to the Bogolusa Heart Study, which found that obesity as early as two years old was an accurate predictor of adult weight. But, Llewellyn says, a genetic predisposition to elephantine portions needn’t guarantee weight problems.
Simple tricks can cut your calorie consumption.
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