Life general knowledge vitamin How to make good use of the gentle one " The double-edged sword " vitamin

Life general knowledge vitamin How to make good use of the gentle one " The double-edged sword " vitamin

One of the nutrient essential to grow up and healthy alone of vitamin. But our mankind is unable to make or formate necessary vitamin in the body, can only absorb from the food or vitamin preparation, and to those long-term fields
Survey or scientific investigation team member of the homework, crew, people and patient,etc. that can't eat because physiological terms are limited living in the cold outlying area engaged in operation on the sea, I'm afraid that mostly should be by keeping healthy to take some vitamin preparations. But take the intersection of vitamin and preparation, need, pay attention to a bit, that don't excessive.
Although vitamin is absorbed insufficiently, will cause various deficiency disease, if some vitamins of kind are taken excessively, also may cause the surplus disease of vitamin. For example, a vitamin A which adults needs is about retinol equivalent (RE) of 800 micrograms ,If absorbs and exceeds 100,000 international units for a long time, will cause the surplus of vitamin A. But if absorb vitamins from the food only, needn't worry about the emergence of the surplus disease of vitamin, because the quantity of vitamin included is limited after all in the food, people can not eat up so much rich food containing a certain vitamin at one time. But if just rely on taking vitamin preparation to supplement vitamins, probably exceed the safe dosage because of carelessness, cause in the body the load of each organ is excessive, initiate the surplus disease of vitamin. So at the oral vitamin, must find out about various characteristic of vitamin, certain about the security dosage on the manual.
Vitamin can be divided into " water soluble vitamin " on the basis of the its solubility in the solvent With " lipid-soluble vitamin " Two kinds. " water soluble vitamin " Including thiamine clan and vitamin C, because it can dissolve in water, surplus vitamin will discharge outside the body with urine when being full to shut as organism. Lipid-soluble vitamin includes vitamin A, D, E, K, because these vitamins can only be dissolved in the body in the fat material, the fat material can't usually be arranged outside, so surplus a vitamin is besides consuming normally, can't be discharged outside the body, but will only accumulate in the body more and more much, when to certain extent, begin to threaten the health.
Vitamin A will generally accumulate in the liver behind entering the human body, promote the function of mucous membrane of eyes, but surplus vitamin A is bound in the liver with fatty acid, will invade the tissue that shouldn't enter, cause and organize the injury. Such symptoms as the acute surplus disease of vitamin A can initiate headache, nausea, brain to press and raise, the chronic surplus disease of vitamin A will cause liver function to degenerate. A lot of young mother often feeds and eats a large amount of cod liver oil to children, contain abundant vitamin A, D in the cod liver oil, the result will cause infant and pre-school children to vomit, the skin is dry to split, wrist and knee are swelling, all these are typical surplus diseases of vitamin A. The one that need to pay special attention to here is, the surplus disease of vitamin A is extremely similar to symptom of deficiency disease, must not get it wrong, otherwise will mend and exceed.
It is more dangerous that vitamin D is excessive. The kidney that it will injure the human body, and this kind of injury is irreversible. If children absorb too much vitamin D, the most typical symptom loses the appetite, belly and head pain, and vomit symptom of suffering from diarrhoea etc.. The clinical trial finds, too much vitamin D will also make calcium content in the blood rise sharply, cause " high blood calcium disease " .
Vitamin k belong to apt to cause surplus lipid-soluble vitamin of disease, to may destroy the liver function while being excessive it too.
Comprehensive vitamin preparation, just like a double-edged sword, right amount of to people's health, it is an angel; Excessive, it is a devil


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