Don't ditch dairy just yet

Unless you've taken a dietary (or even ideological) stance against dairy, you'd do well to include it into your diet every day. Worried that it may get in the way of your efforts at weight loss? No need to fear, say researchers from Harvard Medical School. No need at all, in fact.

Researchers found that people who consumed three servings of dairy per day (providing them with around 1,200mg of calcium) were 60 percent less likely to be overweight. This is because calcium-rich foods actually burn many calories during their digestion.

Just don't go ruining things by getting too fancy with flavored dairy products. Many of them, especially flavored milks, are typically high in simple sugars, which will cause fluctuations in blood glucose levels.