These foods are great sources of fiber, Bulsiewicz said, while sulforaphane is a chemical found in cruciferous vegetables including broccoli, kale, and cabbage that is thought to help prevent cancer.

Every whole food that promotes sulforaphane production naturally supplies ... and kale are excellent sources of vitamin K, dietary fiber, and antioxidants that support health and longevity.

The academic and co-founder of the popular diet tool ZOE says the simple tip could help ensure beneficial chemicals aren't ...