If people start eating small amounts of chocolate, it should replace something else, preferably other high-calorie sweets or snacks.

CNN: Daily chocolate may keep the heart doctor away

Dongguan-based Hsu Fu Chi makes sugar sweets, snacks and cakes.

BBC: China clears Nestle $1.7bn bid for confectionery maker

No sooner had heavily advertised sweets and snacks taken their toll on the waistlines of those who could afford to indulge than slimming came into vogue, creating a market for dieting aids and low-fat foods as lucrative as that for the products that had caused the weight problem in the first place.

ECONOMIST: Food in history

Sweets, crisps and fizzy drinks disappeared from vending machines, which were removed or else dispensed healthy snacks.

BBC: Unhealthy food 'returning to school' warn caterers