Are Herbal Supplements Safe?
A Healthnotes Newswire Opinion
Though concerns should be taken seriously, just being aware of them allows consumers to easily protect themselves
The recent investigation of some herbal supplement manufacturers and retailers by the Government Accountability Office (GAO) has raised industry issues that are important for supplement users to know, even though it does not indicate an immediate cause for widespread alarm. First, in violation of existing regulations, the authors of the report discovered ten instances in which herbal supplement sellers deceptively marketed their products to elderly people. Second, 40 popular single-ingredient herbal supplements were tested and many found to contain trace amounts of heavy metals and pesticide residue, though none at levels that the Food and Drug Administration (FDA) considers dangerous to public health. Though both concerns should be taken seriously, just being aware of them allows consumers to easily protect themselves.
What unethical marketing practices were discovered?
Posing as elderly people calling in to 22 online and store-front retailers, the GAO report describes 10 instances of questionable marketing practices, including store associates advising people to take dietary supplements in place of their prescription medications. The GAO also identified multiple instances of suspect labeling practices, including claims that a dietary supplement can cure or prevent diseases such as cancer, Alzheimer's disease, or high cholesterol.
It is unquestionably unethical to overpromise supplement effects (especially to people managing serious diseases) or to encourage anyone to discontinue using medication or adding a new supplement to a treatment regimen without consulting their healthcare provider. Fortunately, the report does not demonstrate a pattern that gives reason to believe that the transgressions are widespread. It describes the sample of retailers investigated as "non-representative," which presumably means that they did not look objectively across the thousands of supplement retailers nationwide and select a group that somehow represents the industry. The names of the retailers were not included in the report, nor was it clear whether the instances of illegal marketing were discovered by a single retailer or across the group.
Since 1994, the Dietary Supplement Health and Education Act has expressly forbidden these types of marketing practices, and it seems reasonable to expect that responsible supplement manufacturers observe the laws.
What impurities were found in the tested supplements?
Though none of the contaminant levels exceeded those thought to cause acute toxicity, the GAO found that 93% of the 40 supplements tested contained at least one contaminant and that 18 of them contained at least one pesticide residue. All of the contaminated supplements contained lead and others contained the heavy metals, mercury, arsenic, or cadmium. While the Environmental Protection Agency and FDA did not express concern over the immediate negative health consequences of taking any of the supplements that were tested, since conscientious consumers are increasingly interested in organic foods and knowing where their foods come from, extending that awareness to include the source and purity of supplements is the next logical step. In a statement to the New York Times, Steve Mister, spokesperson for the Council for Responsible Nutrition, pointed out that it was "not surprising that herbal supplements contained trace amounts of heavy metals, because these are routinely found in soil and plants."
Alan R. Gaby, MD, chief science editor at Aisle7 believes that, "while it is important to identify the purest sources of vitamins, minerals, herbs, and other natural substances, the majority of the evidence indicates that the benefits of taking recommended amounts of dietary supplements for proven benefits outweighs the risks."
The concerns raised by the GAO report certainly warrant further investigation, but before action is taken, it is preferable that regulatory agencies put the findings into context and support the efforts of reputable manufacturers and retailers, many of which go out of their way to provide meaningful, science-based information and high-quality products. Until more is known, there are plenty of things that you can do to choose your supplements safely:
"A closer look into the findings of the GAO reveal a chance for enhancing consumer awareness and empowerment through informed decision making," says Gaby. "This is the time to bring to light the reams of studies supporting the use of traditional remedies for common ailments. With enhanced access to decision-making tools and properly trained medical professionals, people will be able to safely utilize alternatives or adjuncts to over-the-counter and prescription drugs. In the end, access to truthful scientific information regarding dietary supplements is more helpful to the public than basing policy on questionable claims made by a handful overzealous or unscrupulous supplement manufacturers."
(GAO Testimony Before the Special Committee on Aging, US Senate; Herbal Dietary Supplements, Examples of Deceptive or Questionable Marketing Practices and Potentially Dangerous Advice; http://aging.senate.gov/minority/_files/hr221gk.pdf)
Kimberly Beauchamp, ND, earned her bachelor's degree from the University of Rhode Island and her Doctorate of Naturopathic Medicine from Bastyr University in Kenmore, WA. She cofounded South County Naturopaths in Wakefield, RI, and now sees patients in East Greenwich and Wakefield. Inspired by her passion for healthful eating and her own young daughters, Dr. Beauchamp is currently writing a book about optimizing children's health through better nutrition.