Turnip comes from the cruciferous family like kale and cabbage, so the leaf is also consumed. However the part that is most popularly eaten is the bulbous root, as such it is also considered a root vegetable. It is high in fiber, has some amount of protein and a respectable amount of vit C. It helps to reduce constipation and colon inflammation and like other cruciferous vegetables contains sulforaphane which is shown to lower the risk of cancer. The greens are rich in calcium and fibre also.