Broccoli

                                           

                                           6.Broccoli

According to the USDAs nutrient database, ounce for ounce, broccoli has more vitamin C than an orange and as much calcium as a glass of milk, One medium spear has three times more fiber than a slice of wheat bran bread. Broccoli also happens to be one of the richest sources of vitamin A among all vegetables. As if that wasn't enough, through its presence of strong anti-cancer agents like glucoraphanin, beta-carotene, selenium and other nutrients, broccoli is a natural wonder-drug for many types of cancer, including breast, prostrate, lung, colon, liver, and kidney.