7 foods you should never eat by themselves

Broccoli is a good source of sulforaphane, a cancer-fighting compound. Unfortunately, cooking the greens destroys myrosinase, an enzyme that makes sulforaphane available to your body. To replace the myrosinase, combine broccoli with mustard or another raw cruciferous vegetable, such as rocket. The extra myrosinase helps your body absorb more sulforaphane, according to a study published in the British Journal of Nutrition.