Dietary Supplements

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The healthy skeptic

Consumers are constantly bombarded with advice about health. Lower your cholesterol, avoid carbs, take dietary supplements, avoid Teflon, get a full body scan, etc. Such advice does not fall on deaf ears. Who does not want to remain healthy, look good, and extend life? Two other factors contribute to our eagerness to consume and follow [...]

Selection bias and dietary supplements

One problem in assessing the merits of taking a specific dietary supplement (ranging from vitamins to  exotic multi-ingredient compounds) is widespread selection bias in the documentation that is supposed to support the use of the supplement in question.  The sheer number of scientific studies combined with variation in research methodologies virtually guarantees that for every [...]