Sugar intake should be cut to just five teaspoons a day to reduce tooth decay.

Presenting a study of the effects of sugar on oral health British scientists said the World Health Organization has recommended that intake of sugars should be less than 10 percent of total energy intake.

The research findings suggest that halving this threshold for sugars to less than 5 percent of calories, around five teaspoons a day, would bring further benefits, minimizing the risk of dental cavities throughout life.

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