Yogurt is often marketed as helping digestion and slimming our figure because of probiotics — the idea that "good bacteria" living in the yogurt will shack up in our guts.

Bacteria are well-connected to our metabolism and obesity rates, among other things, so the connection seems logical.

However, we don't yet understand how the millions of bacteria already in our bodies work together, let alone when yogurt is added into the mix.

This is not to say that yogurt is unhealthy, just that its benefits are oversold. Keep in mind, though, that a lot of yogurt is packed with sugar, which we do know contributes to obesity and other problems — so if you enjoy the dairy product, find some that isn't full of empty calories.