The daily allowance for a person's sugar intake should be halved to six teaspoons, the World Health Organisation (WHO) has said. Draft guidance published by the international body advises a dramatic reduction in sugar consumption to help avoid mounting health problems including obesity and tooth decay. The WHO is proposing to retain its current formal recommendation that no more than 10 per cent of an individual's calories should come from sugar – the equivalent of 12 "level" teaspoons a day for the average adult. However, its draft guidelines state that a further reduction to 5 per cent "would have additional...