Sour cherries are lower in calories than sweet cherries. Sour cherries are also higher in vitamin A. Overall, cherries provide an excellent source of flavonoids, melatonin, and perillyl alcohol. Sour cherries are an excellent source of vitamins A and C. They are also a very good source of copper, and a good source of manganese. Sweet cherries offer a significant amount of vitamin C and copper.
The flavonoids contained in cherries are responsible for their deep red-blue color. In general, the darker the cherries the better they are for you because they contain a higher concentration of flavonoids. This applies to both sweet and sour cherries.
Studies have shown that cherries may also offer significant anticancer protection. Tart cherries contain perillyl alcohol (POH). Studies have shown that perillyl alcohol is effective in reducing the incidence of all types of cancer. Studies have also shown that cherries are particularly beneficial in the treatment of gout. Gout is a type of arthritis that occurs when there is an abnormally high concentration of uric acid in the blood.