Some writers include choline as a vitamin. [6] Vitamins have diverse biochemical functions. Vitamin A acts as a regulator of cell and tissue growth and differentiation.

Understanding the Context

Vitamin D provides a hormone-like function, regulating mineral metabolism for bones and other organs. The B complex vitamins function as enzyme cofactors (coenzymes) or the precursors for them. Vitamins C and E function as ... 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..

Key Insights

Learn what vitamins are, their functions, sources, deficiencies, and why they’re essential for health in this complete biochemistry guide. Vitamin, any of several organic substances that are necessary in small quantities for normal health and growth in higher forms of animal life. Vitamins generally cannot be synthesized in amounts sufficient to meet bodily needs and therefore must be obtained from the diet or from some synthetic source. Vitamins are among the most fascinating and essential nutrients for human health. Though tiny in quantity, their impact on life is monumental.

Final Thoughts

They do not provide energy like carbohydrates, fats, or proteins, yet they serve as catalysts and regulators, ensuring that every chemical reaction in your body runs smoothly. Without them, even the most basic functions—breathing, healing, moving ... Shop high-quality vitamins, supplements, and health products at The Vitamin Shoppe to support your wellness journey. Vitamins are essential to human health. Here, learn about each of the 13 vitamins, including good sources and how they help. Learn more here.

Vitamins: What are they, and what do they do? - Medical News Today