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Tuesday, June 14, 2011

Vitamins are not always useful


Eating food or nutritional supplements much to do, especially those assets because they are believed to help maintain and improve health.

But the results of a research study showed that not all vitamin supplements beneficial to health. Reviews of research shows many, some specific vitamin supplements is not beneficial to health, but may increase the risk of death.

Danish researchers reports the BBC on Wednesday (16 / 4) reported the results of their research review found no convincing evidence that antioxidant supplements may reduce the risk of death.

Experts from the University of Copenhagen has even claimed vitamin A and E have the potential to disrupt the body's natural defenses held. • Although the beta-carotene, vitamin A and E seem to increase risk of death, "He said that the results of a review of the investigation was conducted also the Cochrane Collaboration.

Comments on this research to analyze nearly 817 studies on beta-carotene, vitamin A, vitamin C, E and selenium are considered the most representative and influential researcher mereflekasikan supplements to reduce the risk of death.

It has long been known that these supplements can prevent tissue damage, called oxidative stress by reducing free radicals that are touted as the cause.

Several studies reviewed involved a total of 233 000 participants who are always taking supplements for disease prevention.

After considering various factors and striking a 20 investigation, the researchers linked vitamin A supplementation with an increased risk of death by 16 percent, 7 percent-beta-carotene and vitamin E by 4 per cent.

Vitamin C, the researchers apparently show no effect one way or vice versa, and a team of researchers say that research on vitamin B needs to be done, like selenium. ¨ In conclusion, we found no evidence to support supplementation of antioxidants or other prevention, ° said.

The researchers did not explain why supplements can have negative effects, but researchers speculate that the vitamin can interfere with the mechanism or body system, such as beta-carotene is believed to work to change the way the body uses fat.

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