"The mystery of how eating less boosts longevity is closer to being solved.
Studies have shown that severe calorie restriction markedly extends lifespan in mice and many other species - but the reasons for this remained elusive.
But now US research on nematode worms, published in Nature, has uncovered a gene linked to this unusual effect.
In the future, the find could lead to drugs that mimic the consequences of calorie restriction but negate the need for severe fasting regimes."
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