Pineapple is a source of important vitamins and minerals such as thiamine, riboflavin, vitamin B-6, magnesium, manganese,potassium and polyphenols such as beta-carotene anti-oxidants especially Vitamin C which help in controlling cancer, heart diseases and many others. They are especially helpful in controlling colon, lungs and breast cancer.Anti-oxidants destroy cancer causing free radicals that are destructive to your genes and support normal inflammation control and controlling inflammation is one of the key to cancer prevention.