Broccoli might not be the most popular vegetable around, but it’s certainly one of the most nutritious. Considered a superfood for its nutritional value and disease-fighting properties, broccoli is high in fiber, antioxidants, B vitamins, vitamins A, C, K, and the mineral iron, all of which are essential for a healthy diet. More recently, broccoli has also been praised for its ability to combat osteoarthritis.