Plain yogurt naturally contains about 16 grams of sugar per cup. But if you eat flavoured yogurt, you could be downing 15 or more additional grams of sugar, which is the equivalent to four extra teaspoonfuls.

Choose plain, low-fat yogurt and stir in a teaspoon of honey, maple syrup, or all-fruit spread for a hint of sweetness. Or opt for fat-free Greek yoghurt, which is lower in sugar than even regular plain yogurt but often has double the protein to keep you satisfied longer.