Every year, Americans spend $ 30 billion on vitamins and dietary supplements.
As the analysis of the conducted studies, which studied the effectiveness of these substances, shows, most of the money is wasted. Reports the edition about it Medscape.
Often, the results of using vitamins are exaggerated, because people can practice other wellness methods, such as regular exercise and a balanced diet. In addition, evidence-based medicine in large randomized studies does not confirm the high-profile promises made by manufacturers.
“It will cure cancer, reduce pressure, restore potency and, finally, prolong life” - all these miracle properties are attributed to dietary supplements and vitamins. But, in fact, it is not proven by anyone.
Thus, an analysis of the results, including 277 randomized studies and almost a million patients, showed that of the substances used only salt intake affects total mortality.
It is known that reducing the amount of sodium salt (NaCl) in the diet has a positive effect on health, but salt is not a vitamin or dietary supplement.
It has also not been proven that omega-3 fatty acids can protect against myocardial infarction and heart disease, and folic acid can protect against stroke. The combination of calcium and vitamin D, which may increase the risk of stroke, is also causing doubt.
Let us remember that initially doctors prescribed vitamins to eliminate their deficiency. For example, a critical lack of vitamin C in the body causes scurvy. However, there has never been a reasonable explanation for the intake of these substances in large quantities in order to achieve super-benefit.
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