I want to let you know that the cancer is a fungus that grows in acidic bodies ,that means that your father's body has his PH very low( acid environment) .Once he raise or increase his PH of the body the cancer will die soon ,because the human body became alkaline(PH high) . one way to increase his PH is to eat fruits and vegetables in other words ,dont eat animal matter like milk,meat,cheese,animal fats ,yogurt,etc...also I found on YouTube that baking soda or sodium bicarbonate with water dissolved can increase the PH very fast and that can kill the cancer faster .There are a lot of testimonies in the web about baking soda or sodium bicarbonate that they are alleging that their cancer got cured using it but I don't know is this is all true.please consult your doctor. GOD BLESS YOU and your family !