Most vitamins are not single molecules, but groups of related molecules called vitamers. For example, there are eight vitamers of vitamin E: four tocopherols and four tocotrienols. The …

Jan 2, 2026 · All vertebrates, including humans, require dietary sources of vitamin A, vitamin D, thiamin, riboflavin, vitamin B 6, and pantothenic acid; some vertebrates, particularly the more …

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 …

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 …

Nov 29, 2023 · Vitamins are nutrients that are found in the foods we eat. They’re needed for functions such as growth, metabolism, and nervous system activities. Often, a health …

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 …

Sep 16, 2024 · Vitamins are made by plants and animals, while minerals come from the soil and water — both of which are essential for our bodies.

A recent look at multivitamins by Johns Hopkins researchers shows that there’s no proof of benefit. Find out the one supplement deemed beneficial—and how others failed.

1 day ago · This fact sheet offers information about vitamin and mineral supplements, their safety, and related research.

Oct 5, 2023 · This article explains what vitamins are, what they do, and which foods are good sources. Follow the links in blue below for more information about each vitamin.