Depends on how you view it. Technically, yes take it always, to prevent, to cure or to recover. Dosages would vary accordingly. That being said, diet has a major factor too. With regards to cancer, sugars and acidic pH have a big factor. Yes cancer is parasitic. So, eliminate sugars, processed sugars especially. Cancer loves an acid ph, so if you have it, look into changing your diet to raise yours above 7.