Despite boosting calorie intake, regular chocolate consumption was related to lower BMI in the study, which is published in Archives of Internal Medicine.

　　The link remained even when other factors, like how much exercise individuals did, were taken into account.According to the researchers, there is only one chance in 100 that their findings could be explained by chance alone.

　　Lead author Dr Beatrice Golomb, from the University of California at San Diego, said, “Our findings appear to add to a body of information suggesting that the composition of calories, not just the number of them, matters for determining their impact on weight.”

　　This is not the first time scientists have suggested that chocolate may be healthy for us.Other studies have claimed chocolate may be good for the heart.Consumption of certain types of chocolate has been linked to some favourable changes in blood pressure, insulin sensitivity and cholesterol level.And chocolate, particularly dark chocolate, does contain antioxidants (抗氧化剂) which can help to wipe away harmful free radicals—unstable chemicals that can damage our cells.

　　However, while there's no harm in allowing yourself a treat like chocolate now and again, eating too much might be harmful because it often contains a lot of sugar and fat too.And if you are looking to change your diet, you are likely to benefit most from eating more fresh fruit and vegetables.

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