Broccoli is a green vegetable that is almost like a miniature tree. This belongs to the genus known as Brassica oleracea. Broccoli is a rich source of various vitamins, minerals and synthetic fibers. Different cooking methods can affect the nutrient composition of the vegetables, but broccoli is a healthy addition to your diet, whether it is cooked or raw. Broccoli contains several potent antioxidants that can sustain healthy cells and tissues in your body.