 In health-related news this morning, millions of Americans take those nutritional supplements. They're convinced the natural ingredients in these non-prescription products can prevent diseases, make them feel better, and slow down the effects of aging. But is there any proof of that, is the question this morning. We turn now to consumer man Herb Weissbaum, a contributing editor at Checkbook.org, and he has some straight talk this morning about those supplements you might be taking.