Why are vitamins and minerals an important part of nutrition? These nutrients are found in healthy foods and have many roles in the body. They can help it to heal wounds, build strong bones, move muscles, fight germs that can make us sick, and much more! For example, vitamin K helps your blood to clot when you have a cut so that you stop bleeding. Get it from foods like spinach, kale, broccoli, and soybeans. Did you know that potassium keeps your muscles and nervous system working properly? Find it in bananas, tomatoes, potatoes, dairy, and other foods. Discover what the different vitamins and minerals do and how to choose foods that contain them.