Most comprehensive study yet demonstrates that cutting people’s energy intake turns down their metabolism.

Source: Reduced-calorie diet shows signs of slowing ageing in people

Participants on the diet used energy much more efficiently while sleeping than did the control group. This reduction in their base metabolic rate was greater than would be expected as a result of the test group’s weight loss, which averaged nearly 9 kilograms per participant.

“The Rolls-Royce of a human longevity study would carry on for many decades to see if people do actually live longer,” says Pennington physiologist Leanne Redman, the lead author of the latest study. CALERIE ran for just two years, and was designed to see whether a calorie-restricted diet in humans induces some of the same metabolic, hormonal and gene-expression adaptations that are thought to be involved in slowing ageing in other species during long-term caloric restriction.

 

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