The dietary allowance of vitamins was created to provide consumers and physicians with important information on the levels required for health and development. It is useful when planning meals, analyze shortcomings and prevent potentially serious diseases. However, dietary allowances of vitamins used only as a guideline, as individuals have different nutritional needs and medical history
The body needs vitamins to grow, develop and function normally. Each vitamin has a certain role in the functioning of the body. If the level of certain vitamins drops too low, the result can be serious illness. These vitamins are essential for proper functioning of body systems: A, C, D, E, K and B vitamins (thiamin, niacin, riboflavin, biotin, pantothenic acid, folate, B-6 and B-12). When dietary sources are inadequate, the supplements required.
Before dietary allowance of vitamins guidelines were created, vitamin deficiency and associated diseases, such as rickets, night blindness and scurvy, were significantly more common than today.
Guidelines for children, elderly and pregnant women differ significantly than the average person. All concerned about their daily intake of vitamins should discuss these concerns with their physician before making any dietary changes or beginning supplementation with any over-the-counter vitamin product.
Supplements may be necessary because of dietary restrictions, medical complications, prolonged malnutrition or hereditary conditions that affect intake or absorption of vitamins. The guidelines can also be used to promote the healthy development of children and unborn children.
Anyone who takes a vitamin supplement should be careful that dietary allowances are not exceeded. General, including the content of vitamins in regular multivitamin supplements are sufficient to meet daily needs. Mega-dose supplements are often more harmful than helpful. Furthermore, taking a daily vitamin supplement does not guarantee that dietary allowance of vitamins will be met. Vitamin absorption is sometimes dependent on other health factors as foods consumed during the day.
Congress’s first officially defined supplements Dietary Supplement Health and Education Act, which became law in 1994. Most foods list this important information, which can be labeled as “Daily Value” or “Recommended Daily Allowance.”
The guidelines list the amount of each vitamin required daily by the average adult to meet or exceed nutritional requirements. Vitamins contained in a product is listed as both an amount and percentage of daily intake requirements.