Before you stack up on dark chocolate, local dietitians have a word of warning. The calorie content of dark chocolate is about the same as white and milk varieties. And if you want antioxidants, eat some fruit. 'When we're looking at calorie content, [different chocolates] are quite similar,' says dietitian Daphne Wu. 'When it comes to antioxidants, dark chocolate is the best because there's more cocoa powder. But if you want a snack with antioxidants, try a piece of fruit.' Nutritionist Gabrielle Tuscher says it depends on the cocoa used. 'And if you're going to eat the same amount of it as you would of other chocolates, it'll be fattening.' Tuscher says the dark chocolate push is a gimmick. 'The [US] Federal Drug Administration has said that, as of January 2007, all products such as cakes, crisps and chocolates have to label how much trans fat is in their products. They're freaking out trying to find substitutes to replace the trans fats.' Most - if not all - chocolates contain trans fatty acids, she says. These are formed when liquid vegetable oils are changed into a more stable liquid or semi-solid form through hydrogenation. It's been reported that they can raise the so-called bad cholesterol (LDL) and lower the good or HDL cholesterol. 'There's been so much hype about the move to label trans fats,' Tuscher says. 'Saying a chocolate has flavonoids is a way of making it seem healthy.' 'It's probably only trace elements [of flavonoids] in dark chocolate and you'd have to eat huge amounts of it - which negates the purpose of eating something for health.'