Do dietary supplements work? It's your call
August 25th, 2008
By Bob Condor
We are all consumers of nutrition research. Some of us skim the headlines, maybe wave off the latest plus/minus review of, say, the caffeine in our coffee or whether apples really do keep the doctor away (the answer is yes, and there is even a good argument that eating one to three apples daily an hour before a meal keeps the weight down too).
Others among us are sure to read the newspaper or magazine story, maybe clip it out for a loved one or post it on the fridge. Some slice of individuals dig even deeper, looking up the newest study on the net or, ahem, bookmarking favorite health sites and blogs.
What’s less clear is just how we consumers of nutrition research use the information reported. A new study published in the Journal of General Internal Medicine reports an important distinction in how Americans act on scientific findings about herba, vitamins and other dietary supplements. It turns out we are quicker to respond to nutrition research that suggests body harm and don’t waver much if a nutrition shows a supplement is ineffective, yes, but not harmful.
Researchers at the National Institutes of Health’s “bioethics” division analyzed the U.S. sales of five major supplements from 2001 through 2006, then cross-referenced those money figures with positive and negative media reports about the supplements.
Here’s what the federal scientists discovered: For four of the five supplements–St. John’s wort, Echinacea, saw palmetto and glucosamine–there was little or no changes in sales no matter if the news was good (the herb works, helps this disease, products contain what they claim) or bad (the supplement showed no benefit, there is no evidence it works for blank, lab tests show some herb products have less of the active ingredient than promised.
Only in the case of vitamin E were sales adversely affected. In that case, there were widespread media reports and commentaries about a major study linking regular 400 IU doses of vitamin E with increased risk of death from heart attacks and coronary artery disease. There were other studies connecting higher doses of E with potential problems. It was evidently enough to persuade U.S. adults to take less of the vitamin.

By Bob Condor
By Bob Condor
Unless you've studied internet marketing online, you probably don't have a clue who he is.
By Bob Condor
By Bob Condor
As for ED, arginine increases the blood supply’s level of nitric oxide that in turn relaxes the blood vessels. Bhimu Patil, director of the fruits and vegetables “improvement” lab at Texas A&M, says the effect is similar to Viagra (used for ED treatments) but not as “organ-specific.” He says regular watermelon consumption might even prevent ED. Another benefit of this nitric oxide reaction is a natural lowering of blood pressure.
By Bob Condor