4. Cruciferous Vegetables
Since broccoli and Brussels sprouts have already come up a few times, let’s talk about why that is. They both belong to the group of cruciferous vegetables, which also includes kale, cabbage, turnip greens, and cauliflower. Lab experiments have determined that cruciferous vegetables produce a cancer-killing substance when cut or chewed.
Cruciferous veggies seem particularly good at protecting against prostate and colon cancers. In fact, in animal studies sulforaphane and other substances produced upon cutting or chewing these veggies actually shrunk tumors. There are plenty of ways to incorporate cruciferous vegetables into your diet. The only thing you can’t do (and still get the benefits) is swallow them whole.