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Studies have shown that we actually eat more when something is described as ‘low-fat’. In one study people ate as many as 28% more low-fat sugar-coated chocolates than normal ones – an additional 54 calories. It also found overweight people eat a lot more of a low-fat labelled food than normal weight people, and that everybody underestimates the total amounts of calories they consume when eating low-fat food. Most people don’t realise the impact low-fat labels have.