Vitamins are organic (carbon-containing) compounds that are essential in small amounts for body processes.
Vitamins themselves do not provide energy, but enable the body to use the energy provided by carbohydrates, fats, and proteins.
The name vitamin implies their importance, derived from the Latin word vita, meaning life.
Vitamins should not be overused as more is not necessarily better, and megadoses can be toxic.
It was once believed that a healthy person eating a balanced diet would obtain all the nutrients, including vitamins, needed.
Today’s reality is that with after-school sports, dance lessons, music practice or lessons, both parents working, and more, people are in a time and energy crunch.
Vitamins were discovered to be essential when animals fed diets of pure proteins, carbohydrates, fats, and minerals did not thrive as did those fed normal diets that included vitamins.
Vitamins were originally named by letter, but subsequent research has shown that many of the vitamins that were originally thought to be a single substance are actually groups of substances doing similar work in the body.
Vitamin B complex includes B1, B6, B12, and so on, and is now known as B complex.
Most of the 13 known vitamins are currently named according to their chemical composition or function in the body.
Vitamins are found in minute amounts in foods, and the specific amounts and types of vitamins in foods vary.
Beef maintains a normal appetite and nervous system, and supports liver functioning of the cardiovascular system.
Cabbage is a good source of vitamin C.
Green peppers are a good source of vitamin C.
Melons are a good source of vitamin C.
Tomatoes are a good source of vitamin C.
Potatoes are a good source of vitamin C.
Soy flour is a good source of B vitamins.
Poultry contain vitamin B12 (cobalamin), which supports the health of the nervous system and helps maintain a healthy myelin sheath.
Fruit is a good source of vitamin C (ascorbic acid), which supports the healing of wounds, the formation of collagen, and the release of stress hormones.
Brussels sprouts are a good source of vitamin C.
Eggs are a good source of vitamin B2 (riboflavin), which aids in the release of energy from food.
Green, leafy vegetables are a good source of vitamin B9 (folate), which supports healthy eyes and skin, and helps maintain a healthy nervous system.
Cereals, legumes, and enriched breads are good sources of B vitamins.
Broccoli is a good source of vitamin C.
Brewer’s yeast is a good source of B vitamins.
Fish contain vitamin B3 (niacin), which supports healthy eyes and skin, and helps maintain a healthy nervous system.
Strawberries are a good source of vitamin C.
Since 1997, the Food and Nutrition Board of the Institute of Medicine has been establishing Dietary Reference Intakes (DRIs) to replace the Recommended Dietary Allowances (RDAs).
Tolerable Upper Limits (ULs) have also been set for some vitamins and minerals.
Vitamin A, D, E, and K are fat-soluble vitamins, while B vitamins and C are water-soluble.
Biotin and Pantothenic Acid are part of the B complex, and have their own Adequate Intakes.
If vitamin supplements are thought to be necessary, it is best to consult a physician or registered dietitian.
The Dietary Supplement Health and Education Act of 1994 exempts dietary supplements from FDA evaluation unless the FDA has evidence that a product is harmful.
Water-soluble vitamins can be destroyed during food preparation.
Vitamin deficiencies can result from inadequate diets or from the body’s inability to utilize vitamins.
Vitamins A, D, E, and K are fat-soluble.
Doses are established, and side effects and adverse reactions are reported in scientific journals.
It is important that care is taken during the preparation of food to preserve its vitamin content.
Minerals can negatively affect the absorption or utilization of other vitamins and minerals.