Overview

A vitamin is an organic compound required as a nutrient in tiny amounts by an organism. A compound is called a vitamin when it cannot be synthesized in sufficient quantities by an organism, and must be obtained from the diet. Thus, the term is conditional both on the circumstances and the particular organism. For example, ascorbic acid functions as vitamin C for some animals but not others, and vitamins D and K are required in the human diet only in certain circumstances.

Vitamins are classified by their biological and chemical activity, not their structure. Thus, each "vitamin" actually refers to a number of vitamer compounds, which form a set of distinct chemical compounds that show the biological activity of a particular vitamin. Such a set of chemicals are grouped under an alphabetized vitamin "generic descriptor" title, such as "vitamin A," which (for example) includes retinal, retinol, and many carotenoids. Vitamers are often inter-convertible in the body. The term vitamin does not include other essential nutrients such as dietary minerals, essential fatty acids, or essential amino acids, nor does it encompass the large number of other nutrients that promote health but are otherwise required less often.

Friday, January 9, 2009

Hemorrhoid Symptoms - Are They More Common During Pregnancy and What Can I Do About Them?

Hemorrhoids are veins or blood vessels around the anus or lower rectal area, which is to be abnormally swollen or inflamed. Some of the common factors for the development of hemorrhoid causes are:

? Burden during the chair

? Aging

? Chronic diarrhea

? Anal

? Pregnancy

hemorrhoids are very common symptoms during pregnancy, especially during the second phase of work, while pushing. If you have hemorrhoids before pregnancy, as if it was not uncommon for them during pregnancy.

pregnancy is more susceptible to hemorrhoids as a result of the following:

1. The growing uterus brings additional pressure on the pelvic veins and inferior vena cava, the vein that receives blood from the lower extremities. To increase the pressure slows the blood from the lower half of the body and causes the veins in the uterus to swollen or inflamed.

2. Constipation, including during pregnancy, the effort involved in the hard chair is a common cause of hemorrhoids.

3. Progesterone - the hormone that increases during pregnancy causes the vein walls to relax, which in turn allows easier swelling. Also, slowing down the intestinal tract, to constipation.

Some steps that can help to hemorrhoids are:

? Avoid sitting or standing for long periods of time

? Constipation should be avoided by using a high-fiber diet

? Drink at least 8 a.m. to 10 p.m. glasses of water per day

? If the urge for a bowel movement developed not wait and not burden

Finally, for the most part hemorrhoids disappear after pregnancy. However, if the symptoms continue and /or rectal bleeding noticed a doctor as soon as possible.

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Article Source: http://EzineArticles.com/?expert=G._Morris

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