Foods that harm and foods that heal

Grapefruits
Pink and red varieties contain both beta-carotene and lycopene, potent antioxidants.
They are high in vitamin C and potassium. Grapefruits are low in calories and contain bioflavonoids and other plant chemicals that protect against cancer and heart disease.
A cup of fresh squeezed grapefruit juice has 95 mg of vitamin C, more than hundred percent of the RDA, and most of the other nutrients found in the fresh fruit. Grapefruits are especially high in pectin, a soluble fibre that helps reduce blood cholesterol. In addition, grapefruits contain other substances that prevent disease. Lycopene, the antioxidant found in pink and red grapefruits, appears to do lower prostate- cancer risk.
Other protective plant chemicals found in grapefruits include phenolic acid, which inhibits the formation of cancer-causing nitrosamines; limonoids, terpenes and monoterpenes, which induce the production of enzymes that help prevent cancer; and bioflavonoids, which inhibit the action of hormones that promote tumour growth. Some people that rheumatoid arthritis, lupus and other inflammatory disorders find that eating grapefruit daily seems to alleviate their symptoms. This may occur because plant chemicals block the prostaglandins that cause inflammation. By taking 10 servings of grapefruit a week, prostate cancer risk can be reduced by 50%.
Kiwi fruits
Kiwi fruits are an excellent source of vitamin C.
They add a good source of potassium and fibre.
Kiwi fruits can be used as a meat tenderizer.