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  1. Vitamin - Wikipedia

    In humans there are 13 vitamins: 4 fat-soluble (A, D, E, and K) and 9 water-soluble (8 B vitamins and vitamin C). Water-soluble vitamins dissolve easily in water and, in general, are readily …

  2. Vitamin | Definition, Types, & Facts | Britannica

    Nov 22, 2025 · Vitamins, on the other hand, generally cannot be synthesized in amounts sufficient to meet bodily needs and therefore must be obtained from the diet or from some synthetic …

  3. 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 …

  4. Vitamins and Minerals From A to Z - WebMD

    Aug 23, 2022 · Find out from WebMD's slideshow which vitamins and minerals your body needs, what they do, and what foods you can eat to get them..

  5. Vitamins: MedlinePlus Medical Encyclopedia

    Jan 21, 2025 · Vitamins are a group of substances that are needed for normal cell function, growth, and development.

  6. What Are Vitamins, and Why Are They Important? - Verywell Health

    Sep 4, 2025 · Vitamins are essential nutrients that you must obtain through your diet. The two types of vitamins, fat-soluble and water-soluble, are needed for many vital bodily processes, …

  7. What are vitamins, and how do they work? - Medical News Today

    Oct 5, 2023 · Vitamins are essential to human health. Here, learn about each of the 13 vitamins, including good sources and how they help. Learn more here.

  8. Swanson - Vitamins, Supplements & Natural Health Products

    Shop online for high-quality vitamins, supplements, and natural health products at unbeatable prices with Swanson Health Products.

  9. Vitamins and Minerals - Nutrition.gov

    Learn about the functions that each vitamin and mineral performs in the body. Discover what minerals your body needs to stay healthy and work properly. Learn what vitamins your body …

  10. Essential Vitamins: Importance, Deficiencies, and Solutions

    Aug 22, 2023 · Learn about the 13 essential vitamins your body needs for proper function, their roles, and how to get them through a balanced diet. Plus, the risks of vitamin deficiencies and …