A widely prescribed type 2 diabetes drug slows down the aging process by mimicking the effects of dieting, according to a study published today 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 aging process.
