Vitamin K, A and C, calcium and fiber are all very abundant in broccoli and a good dose of broccoli once a week will help prevent cancer as well as help build strong bones.

Cauliflower is hands down the best source for vitamin K, which is vital to your body's ability to make your blood clot.  It is also a good source of vitamin C, fiber and some great nutrients that are believed to help prevent certain cancers like breast and prostate cancer.

Beans are a great source of folate which is great for cell formation.  Iron is also found in beans which helps keep your energy up.  Other important substances in beans can help prevent cancer, reduce the risk of diabetes, aid your circulatory system and help control your weight.