Vitamins A, B6, C, E, and K, as well as magnesium, folate, copper, potassium, calcium, iron, carbohydrate, and protein, are plentiful in turnips. Turnip greens, in particular, have a very high calcium content. Turnips are a cruciferous vegetable that is widely recommended as part of a balanced diet. Turnips assist in the detoxification of the body as well as the fight against free radicals and, as a result, cancer.