Old man's too much drawback of taking in vitamin A

Old man's too much drawback of taking in vitamin A
American scientific research personnel find, the intaking amount to vitamin A of the elderly over 60 is limited, take, can make liver damage, can cause some other disease by a large amount of vitamin A.
Scientific research personnel once tested to the elderly over 562 60, the old person of over half of result took excessive vitamin A. In the blood of some the elderly taking excessive vitamin A for a long time, have found that causes the material of hypertension - -Vitamin A aldehydo-ester. Free vitamin A aldehydo-ester in the blood, it is a kind of harmful substance, as the blood circulation can damage liver and kidney, cause bone joint paining and some dermatosises, will also cause serious headache.
Therefore, scientific research personnel propose, the elderly over 60 should not take a large amount of vitamin A. Some doctors of the western countries, have maintained that take a large number of vitamins to lengthen the cell life-span, the result ends in failure. Studies have suggested, some vitamins of old person's infomal dress are essential, but should not be excessive, can't take everyday. And the best method which supplement vitamin is to eat more fruit and vegetables.
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