Cancer is more of a deficiency disease . It comes as a result of lack of vitamin D3 n B 17. Other habits that can cause cancer are when ur body absorbs heavy metals like mercury (through bleaching cream etc), lead (Pb). When u stay n breath for a long time smokes from incinerator or from crematory (a place where dead bodies are burn to ashes. Like Lagos state will soon set up some in the state) or stinking odour of dust bins etc. There are several foods one can take to prevent or reverse Cancer + change of life style.