6 popular vitamin supplements linked to increased risk of death
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Most people get all the vitamins and minerals they need from food, but some people also prefer to take supplements. The point of taking vitamin supplements is that they serve as a buffer against chronic diseases. However, the long-term health effects of many compounds are unknown.
Researchers in the study sought to fill this knowledge gap.
They evaluated the use of vitamin and mineral supplements in relation to total mortality in 38,772 older women in the Iowa Women's Health Study.
The Iowa Women's Health Study was designed to examine the relationship between several body, diet and lifestyle factors and death rates.
What did the researchers find?< /h2>
Use of multivitamins, vitamin B6, folate, iron, magnesium, zinc, and copper was associated with an increased risk of all-cause mortality compared with no corresponding use.
However, calcium use was inversely proportional to the absolute risk reduction of death.
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“In older women, several commonly used dietary vitamin and mineral supplements may be associated with an increased overall risk of mortality,” the researchers concluded. This connection is strongest with iron supplements. Contrary to the results of many studies, calcium is associated with a reduced risk.”
The results have been confirmed in several studies that suggest that taking vitamins and supplements does not provide clear health benefits.
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A review published in the International Journal of Preventive Medicine examined the results of randomized trials of multivitamin/mineral supplements and individual vitamin/mineral supplements on overall mortality and morbidity from chronic diseases, especially cancer and coronary heart disease.
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