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FOLLOWING INFO I GOT FROM http://www.cookingnook.com/facts-about-tomatoes...
Tomatoes are a rich source of several nutrients. They are well known for their high vitamin C content, but also contain significant amount of vitamin A, B vitamins including niacin and riboflavin, magnesium, phosphorous and calcium.
Tomatoes are also a good source of chromium, folate and fiber.
In recent years a particular nutrient found in abundance in tomatoes, lycopene, has made many headlines for its disease fighting abilities.
Lycopene is well known as a preventer of prostate cancer, which makes tomatoes high on the healthy food list for MEN.