Excessive intake of certain dietary supplements may reduce life expectancy | Life

BOSTON, April 10 – A new study demonstrates the inefficiency of dietary supplements in reducing the risk of death. Some may even have the opposite effect.

Posted in The annals of internal medicine, this study was conducted on 30,899 adult Americans aged 20 and over who participated in a national health and nutrition survey between 1999 and 2010. These participants answered questions about their use of dietary supplements.

The purpose of this research, conducted by the Friedman School of Nutrition Science and Policy at Tufts University in the US state of Massachusetts, was to evaluate the link between the United States.

During the study, which lasted six years, 3,613 people participated in the study, 945 died from a cardiovascular disease and 805 from cancer.

The scientists behind the research found that adequate vitamin A, vitamin K, magnesium, zinc and copper intake was associated with a lower risk of premature death, but only when these Nutrients came from foods.

The study also found that people who consumed high doses of calcium (1,000 mg or more a day) in the form of dietary supplements had an increased risk of cancer death by 53%, with the authors indicating that the link between excessive intake of calcium and cancer is not yet quite clear and requires additional research.

Patients who did not have vitamin D deficiency but who consumed this nutrient supplemented with 10 μg or more a day also had an increased risk of death during the study, the researchers noted. In contrast, supplements do not appear to have increased the risk of death in people who lacked vitamin D in their normal diet.

In light of these findings, the scientists concluded that people with no specific dietary deficiency should continue to benefit from the nutrients in "real" foods by maintaining a balanced diet rich in fruits and vegetables. – AFP-Relaxnews