A widely prescribed type 2 diabetes drug slows down the ageing process by mimicking the effects of dieting, according to a stud using worms to investigate how the drug works. Following a calorie-restricted diet has been shown to improve health in later life and extend lifespan in a number of animals, ranging from the simple worm to rhesus monkeys. The type 2 diabetes drug metformin has been found to have similar effects in animals but until now it was not clear exactly how the drug delays the ageing process...
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