They are strong inhibitors of tumor cell growth. Limonoids stimulate a detoxifying enzyme system and inhibit tumor formation. These plant estrogens can reduce hot flashes and night sweats in menopause and may reduce osteoporosis. Genistein, an isoflavone in soy, is a strong antioxidant and also blocks enzymes that promote blood vessel growth around tumors, thereby helping to starve the tumor. Phytosterols reduce the risk of colon cancer by slowing down cell multiplication in the colon.
Protease inhibitors slow tumor growth.
The bran and germ of grains also contain active phytochemicals, plant sterols, phytases, lignans, ellagic acid, isoprenoids, and saponins, which fight cancer and heart disease by many different methods. Phytates act as an anti-oxidant by binding iron, which is a oxidant. Isoprenoids suppress tumor growth. Refining grains removes almost all phytochemicals. Phenolic flavonoid and anthocyanin pigments which are strong anti-oxidants and inhibitors of cholesterol synthesis, found in red wine and grape juice, as well as many other fruits, vegetables, and herbs.