Vitamin is a kind of nutrition necessary to maintain human and animal health, low molecular organic compounds, most of them cannot be synthesized in the body, or the synthesis is difficult to meet the needs of the body, must be supplied by food. This kind of material has the following characteristics: the common exist in the natural food; most can not be synthesized in the body (vitamin D, vitamin K and a few exceptions); not the body composition, do not provide energy, but play an important role in regulating the metabolism process. Only a small amount of human daily vitamin can meet the metabolic needs, but must not be missing, or the lack of to a certain extent, can cause vitamin deficiency. According to the solubility of vitamin can be divided into two categories, namely, fat soluble vitamins and water soluble vitamins. The fat soluble vitamins including vitamin A, vitamin D, vitamin E and vitamin K, which can dissolve in fat, with fat into the human body; water soluble vitamins including vitamin C and vitamin B group (B One
, niacin, pantothenic acid, folic acid, biotin), they can be dissolved in water, with water into the body. Due to the different solubility of two kinds of vitamins, absorption, excretion and accumulation of different situation, leads to a lack of symptoms at different rates. Fat soluble vitamin deficiency symptoms occur more slowly, and the water soluble vitamin deficiency symptoms is relatively fast.
Vitamin deficiency Pathogeny
There are many reasons causing vitamin deficiency, common are as follows:
The insufficient supply of 1 meals. Both the lack of the vitamin content of the food itself, including inadequate food intake, food processing and cooking methods may also be caused by improper vitamin destruction, loss, resulting in insufficient supply of food.
2 absorbed by human body's ability to reduce vitamin. Including excessive intake of dietary fiber and other factors caused the decrease of the absorption of vitamins, and gastrointestinal dysfunction caused by decreased vitamin absorption.
3 physiological vitamin requirements relative increase. The human body increase as pregnancy and lactating women, the growth and development of children of various vitamin requirements in some special period, the body will need to increase the amount of vitamins in the cold and hot special environmental conditions or diseases also.
4 excretion. Vomiting, diarrhea and other conditions can lead to a variety of vitamins, especially water-soluble vitamin excretion.
The above factors are likely to cause vitamin deficiency, if the lack of vitamin deficiency can lead to serious.
Vitamin deficiency Clinical manifestation
There are more than ten kinds of essential vitamin, divided into water-soluble vitamins and fat soluble vitamins in two categories. Vitamin deficiency in vivo is often a gradual process, the first is the body reserves decline, which may occur with biochemical abnormalities related to metabolism, the changes of physiological function, and then the pathological changes, clinical symptoms of the corresponding. Therefore, vitamin deficiency less often no obvious clinical symptoms, symptoms of a serious lack of special it lacks vitamin. Of course, clinical more common may be a mixture of vitamin deficiency symptoms.
Vitamin deficiency inspect
The dietary survey, laboratory examination and clinical symptoms and signs of the comprehensive assessment of vitamin status, to determine whether the lack of vitamins. The first and very important is the dietary survey, because the content of different kinds of vitamins in food are not the same as the amount of food intake, everyone is not the same, for the digestion and absorption of vitamin, discharge level is not the same. Second is the laboratory examination, most of the water soluble vitamins can be evaluated by urine or / and blood, and the fat soluble vitamins can not be evaluated by urine. The third is the clinical symptoms and signs, because each kind of vitamin deficiency may have relatively specific clinical manifestations.
In conclusion, through the above methods to comprehensive analysis and judgment of vitamin deficiency.
Vitamin deficiency Diagnosis
Vitamin deficiency should be based on dietary survey, laboratory examination and clinical comprehensive diagnosis.
Vitamin deficiency Treatment
Mild vitamin deficiency can be generally recommended by food, should choose foods rich in vitamins; for moderate vitamin deficiency may be in food based on the use of the corresponding amount of vitamin supplements; severe vitamin deficiency may even need intramuscular injection or intravenous infusion. In short, in the treatment of vitamin deficiency must be individualized, taking into account the individual to supplement vitamin digestion and absorption and utilization, but also pay attention to avoid excessive supplement, otherwise the effect will be counterproductive and may even harm health.