Very few foods naturally have vitamin d. Fatty fish such as salmon, tuna, and mackerel are among the best sources. Fortified foods like milk provide most of the vitamin d in american diets.

However, these micronutrients are not produced in our bodies and must be derived from the food we … 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 term vitamin does …

The term vitamin does …