You need vitamins as much as it does to sustain your life; because it does. Vitamins (not the tablets or chewables, but the actual molecules) are vital to human life, and your body needs them to stay healthy. But there are many different kinds of vitamins, so you need the Vitamin Guide.
You've come to the right place. You'll learn the basics about these essential micronutrients, learn what vitamins are, review how science discovered them, and learn how they work in your body.
Then you'll see all the essential vitamins. Use the links in the table of contents to jump to different vitamins and explore all the essential substances that keep your body healthy.