Coconut oil
Credit: Photograph by Nick Ferrari

Although it's 90 percent saturated fat, coconut oil – a staple in paleo and vegan cooking – has the kind of fat shown to actually boost heart health. In one study, people who ate coconut oil shed more fat than those who ate the same calories in olive oil.

Try it: A tropical taste and high smoke point make this oil ideal for curries, baked goods, and soups.