The Vitamin Breakdown
by Ruth Stattmiller
Vitamins are organic compounds
that the human body cannot produce and therefore must acquire
through the diet. To help maintain good health, humans need 13
different vitamins. These include: vitamin A, the various B and
D vitamins, vitamin C, vitamin E, and vitamin K.
Deficiencies of these essential vitamins can cause the body to
enter a diseased state. Deficiencies of different vitamins manifest
themselves with differing diseased states. For example,
night-blindness is linked to vitamin A deficiency, while
Rickets is linked to vitamin D deficiency.
The relationship between foods and maintaining health has been
recognized for centuries. For example, in 1747, Dr. James Lind
discovered that citrus fruits prevented scurvy. Some stores of
vitamins within the body can last well over a year, as is the
case with vitamin B12. Others can deplete more rapidly—lasting
only a couple of weeks. A vitamin can be either fat or water
soluble. Water-soluble vitamins are not stored in the body.
Often they need to be replenished more frequently. Fat-soluble
vitamins, however, are stored in the body. Excessive intake of
fat-soluble vitamins can cause toxicity in the body.
Fat-soluble vitamins include A, E, D and K.
Today there is debate among experts over the benefits of
vitamin supplements. Some believe supplements must be taken in
conjunction with the daily diet. This is because many foods are
processed and artificially enriched—which can reduce the
nutrient level naturally found in these foods. Moreover, even
fresh fruits and vegetables are picked prematurely and shipped
long distances before arriving on grocery shelves. For this
reason, some physicians recommend taking vitamins.
The US RDA is a standard set forth by the Food and Nutrition
Board of the National Academy of Sciences National Research
Council to help Americans determine a proper level of daily
vitamin intake. It is important to note, however, that these
levels are sometimes quite modest— intended to meet the
nutrient needs of already healthy individuals. For some, these
amounts may be lower than optimal. For example additional
amounts of vitamins may be needed during illness. Consequently,
the Board has also set two other values: the tolerable upper
intake levels (UL) and the adequate intakes (AI). The UL values
are designed to help people avoid over consumption. AL values
are established when there is not enough scientific evidence to
set an RDA.
It is important to note that different developmental stages and
physiologies may require varying vitamin intakes. Children,
adolescents, women, and men all have differing needs.
Consulting a specialist is the best way to determine personal
vitamin needs. Moreover, some supplements may negatively
interact with prescription drugs. Therefore, all supplemental
intakes should be discussed with a physician.
A proper balance of vitamin intake can enhance personal health
and increase energy levels. These essential nutrients aid in
the regulation of many bodily functions and can prevent
illnesses. Their value must not be underestimated.
About the Author
Ruth Stattmiller enjoys writing about the benefits of vitamins.
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