Off-switch for overeating and obesity found in the brain

arstechnica.com

When researchers knocked down a single enzyme in the brains of mice, the rodents seemed to lose the ability to tell when they were full. They ate more than twice their usual amount of food at meal times and tripled their body fat within three weeks. And—most strikingly—when the researchers reversed the experiment, the mice just as quickly stopped eating so much. Data on the enzymatic switch, published Thursday in Science, suggests a possible target for future drugs to treat obesity in humans.

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