Excessive intake of vitamin A may increase the risk of fracture
Vitamin A is an important vitamin. The body cannot synthesize vitamin A by itself. It needs to be taken through diet. A new study suggests that vitamin A supplementation should be cautious, and excessive intake of vitamin A supplement may reduce bone thickness and increase fracture risk. Related research papers were published in the new British Journal of Endocrinology.
Animal experiments showed that during the 10-week experiment, the researchers allowed mice to consume vitamin A equivalent to 4.5 to 13 times the recommended daily intake of humans. As a result, only 8 days later, the mouse bones became significantly weak. And as the experiment progressed, the bones became thinner and thinner.
According to reports, previous studies have suggested that people taking vitamin A supplements may increase their risk of bone damage. Animal experiments have also shown that in the short-term intake of vitamin A from 13 to 142 times the daily recommended intake of humans, the risk of fracture in the rats will increase after one to two weeks. In this new study, the dose of vitamin A in the rats was relatively low, which was comparable to the daily intake of those who took health supplements for a long time.
The results of this study suggest that extra vitamin A supplementation outside the diet should be cautious. The author of the paper, Professor Wulf Rainer of the Institute of Medical Research at the University of Gothenburg in Sweden, said that more and more people are taking vitamin supplements daily. The problem of excessive intake of vitamin A is becoming more and more serious, and more research is needed. In most cases, a nutritionally balanced diet is sufficient to replenish the vitamin A needed by the body.
Source: Technology Daily
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