Kiwi is a rich source of Vitamin C and Vitamin E. Vitamin C is a water soluble vitamin that works effectively against the harmful effects of free radicals, thus protecting the body against a host of diseases starting from cancer to obesity and also asthma. Vitamin E, though a fat soluble form, is complementary to the beneficial effects of Vitamin C.

Kiwi fights against diabetes and colon cancer. Kiwi has high fiber content. Fiber controls the level of sugar in one's blood. It binds with toxic materials in the colon and helps in expelling them. The fiber also helps in lowering the amount of bad cholesterol in blood. This improves the health of those with cardiovascular diseases and reduces the risk of heart attacks.

Kiwi fruits are rich in minerals like potassium, magnesium and copper. Potassium counteracts the action of sodium chloride in causing high blood pressure. Hence, it is beneficial in lowering blood pressure and preventing heart diseases associated with it. Magnesium and copper play an important role in strengthening of bones. In addition to its bone strengthening properties, copper also facilitates brain development and sprucing up the immune system.

Studies have shown that kiwi is beneficial for reducing the occurrence of age-related macular degeneration (AMD) which is the main cause of vision impairment in adults. This effect of kiwi fruits is attributed to the flavonoid antioxidants like beta carotene, lutein and xanthin. These antioxidants also prevent cataracts, heart diseases and cancer.

Kiwi also has positive effects on the respiratory system. A study conducted in Italy has shown that children who consumed kiwi fruits and other citrus fruits on a daily basis had lower risk of developing respiratory problems like wheezing, coughs and runny noses than those who did not include these fruits in their regular diet. It is specifically useful in treating asthma in children.