In 1994 Congress (pushed by Senators Harkin and Hatch) passed DSHEA (the Dietary Supplement Health and Education Act). As regular readers of SBM know, we are not generally happy about this law, which essentially deregulated the supplement industry. Under DSHEA supplements, a category which specifically was defined to include herbals, are regulated more like food than like medicinals.
Since then the flood-gates opened, and there has been open competition in the marketplace for supplement products. This has not resulted, I would argue, in better products – only in slicker and more deceptive claims. What research we have into popular herbals and supplements shows that they are generally worthless (except for targeted vitamin supplementation, which was already part of science-based medicine, and remains so).
A company can essentially put a random combination of plants and vitamins into a pill or liquid and then make whatever health claims they wish for their product, as long as they stay within the “structure-function” guidelines. This means they Read more »
*This blog post was originally published at Science-Based Medicine*
What is in a prenatal vitamin? Why do most doctors recommend them? Is there any evidence taking them is worthwhile? I decided recently that I would read through the ingredients of these vitamins, often touted as “essential vitamins and nutrients, crucial for the healthy development of your baby.” Hmmm. Does that mean eating traces of polyvinyl alcohol every day is beneficial?
The fine print ingredients of such brands as “One A Day”, “Centrum Materna”, “Rite Aid” and even the prescription only “Prenate Elite” are a confusing mess of milligrams, international units, RDA’s, and chemicals. As the makers of Centrum explain, “It is very challenging to formulate vitamins and minerals without the use of non-medicinal ingredients which serve to keep the product stable and to prevent the various ingredients from interacting.” They also find fault in the limited number of suppliers of the active ingredients in prenatal vitamins, and therefore claim substances like gelatin are difficult to avoid.
Let’s take a tour of the prenatal vitamin ingredient zoo. Read more »
*This blog post was originally published at The Examining Room of Dr. Charles*