It is too much and apt to cause depilating and bone-ache that vitamin A is absorbed
People all regard vitamin as nutritive medicine, try every means to supplement through the diet, health product even medicine. Certainly, it is really favorable to the metabolism of organism that vitamin is sufficient, but if exceed requirement, especially take and can cause it to accumulate in body in ultra quantity of lipid-soluble vitamin, cause various bad reactions.
Vitamin A is lipid-soluble vitamin, can cause the dark adaptation obstacle, angle of the skin of nyctalopia mucous membrane such as lacking, sense of taste, sense of smell, sense of hearing function unusual to drop easy to cause the change of infecting etc. with immunological function. In fact, so long as diet life is normal, vitamin A seldom takes place insufficiently. Meanwhile, except obvious nyctalopia, generally it is very difficult to confirm whether to lack vitamin A.
Check, confirm vitamin A to be insufficient at clinic, can through food, for instance the intersection of animal and liver, including plant of beta carotene,etc. to can meet human body's needs while being supplementary, needn't supplement with the medicine besides special circumstances. The adult eats half a stick of carrot and meets the demands every day.
Vitamin A is lipid-soluble vitamin, excessive and difficult to discharge from the body to absorb. Absorb too many (take the intersection of animal and liver often, the intersection of dog and liver) And the inappropriate medicine is supplemented, may present the surplus phenomenon of vitamin A. The surplus of vitamin A is early can present the long bone and pain, will loss the hair subsequently. Meet this kind of situation, should stop supplementing vitamin A and going for hospital inspection immediately, send for a doctor and make a diagnosis and give treatment.
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