According to Griffin, in World Without Cancer, and other sources, fruit seeds contain vitamin B17, which has been shown to destroy cancer cells in the body. Especially eat apricot and peach seeds- just crack open the hard shell and find the almond-shaped nut inside. The taste is unique but worth it, and you'll get used to it.
Also, many grasses contain B17, explaining why animals eat grass when feeling ill. Millet, mostly eaten in the far east, is an excellent grain source of B17.
Incidentally, health food and vitamin stores will not offer B17. Most have never heard of it. Please read World Without Cancer to find out why this important vitamin is mostly unknown, as well as the suppressed research showing that cancer is a disease of malnutrition. We just aren't eating enough of the right foods to keep ourselves healthy.