Control your portion sizes
AS Dr Khan reported, animal studies suggest that a 10-50 percent reduction in calorie intake can increase an individual’s maximum lifespan.
Studies of humans show similar links between low calorie intake and an extended lifespan with a lower likelihood of disease.
"Naturally, calorie restriction helps to reduce excess body weight and belly fat, of which both carry the risk of a shorter lifespan," says Dr Khan.
The best vitamins: The most beneficial vitamins (Image: Getty Images)
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Spicing things up
According to Dr Khan, herbs and spices don’t just make your food tastier, but also have a beneficial effect on health and wellness.