
Vitamin - Wikipedia
Vitamins are organic molecules (or a set of closely related molecules called vitamers) that are essential to an organism in small quantities for proper metabolic function. These essential …
Vitamins and Minerals From A to Z - WebMD
Aug 23, 2022 · One type comes from animal sources of food. It helps you see at night, make red blood cells, and fight off infections. The other type is in plant foods. It helps prevent damage to …
Vitamin | Definition, Types, & Facts | Britannica
Oct 30, 2025 · What are the vitamin requirements in human beings? There is no uniform agreement concerning vitamin requirements for humans, but recommended daily vitamin …
The 7 Best Vitamins & Minerals for Your Immune System
Oct 13, 2025 · Can certain vitamins and minerals keep your immune system at its best? Yes! A registered dietitian explains how.
What Are Vitamins, and Why Are They Important? - Verywell Health
Sep 4, 2025 · Vitamins are essential nutrients that help with many body functions, including metabolism and energy. There are two types of vitamins: fat-soluble and water-soluble, each …
Vitamins and Minerals • The Nutrition Source
Vitamins and minerals are micronutrients required by the body to carry out a range of normal functions. However, these micronutrients are not produced in our bodies and must be derived …
Vitamins: MedlinePlus Medical Encyclopedia
Jan 21, 2025 · There are 13 essential vitamins. This means that these vitamins are required for the body to work properly. They are: Vitamins are grouped into two categories: Fat-soluble …