Showing posts with label kava. Show all posts
Showing posts with label kava. Show all posts

Thursday, January 03, 2008

Consumer Reports Wrong on Dietary Supplements

CR Wrong on Dietary Supplements By Neil E. Levin, CCN, DANLA Consumer Reports published an article on dietary supplements in January 2008, titled, “Risky Pills – Supplements to avoid”. Unfortunately, CR may have failed to live up to its reputation as an impartial arbiter of quality, apparently relying on its medical and research consultants’ opinions instead of actually testing products. How informed and impartial are these sources on this particular topic? Of course, there is no excuse for companies that blatantly break the law by illegally and knowingly adulterating dietary supplements with drugs or banned substances. The dietary supplement industry asks the FDA and FTC to throw the book at those bad apples pretending to be legitimate businesses. In fact, manufacturers overwhelmingly supported recent legislation – now the law of the land – to put teeth into FDA enforcement powers by banning steroid precursors, regulating manufacturing requirements (cGMPs, current good manufacturing practices) and instituting mandatory reporting of serious adverse events. The supposed burden on the FDA “to prove that a supplement creates “a significant or unreasonable risk” before it can demand its removal” is actually a very low bar, now that the US Supreme Court has allowed a ban on the herb Ephedra without requiring proof that the agency had followed the law, or even its own regulations, in the process. In the CR report, several dietary supplements are singled out for criticism, but with some startling omissions of fact. Androstenedione products (anabolic steroid precursors) have already been outlawed, with the explicit support of the dietary supplement industry. Only rogue manufacturers carry them because they are clearly illegal. Chaparral is mentioned as a present danger, but reputable manufacturers voluntarily withdrew the herb after an FDA warning – back in 1992. Organ and glandular tissues are singled out for risk of Mad Cow disease, but only certain ones are vulnerable and these have largely disappeared from the marketplace. Most glandular tissues are carefully obtained from range-fed animals in New Zealand or Argentina, from areas with no reported cases of this disease. The alkaloid synephrine from Bitter Orange (Citrus aurantium) often gets accused of causing “high blood pressure, heart arrhythmias, heart attack, stroke”. Yet the FDA Medwatch program’s web page does not list a single substantiated complaint of the herb causing these symptoms. Most Bitter Orange is used in formulations along with caffeine and other legal stimulants. In fact, there is evidence that Bitter Orange is not responsible for some of these products’ side effects: “Ephedra-free weight loss supplements have significant cardiovascular stimulant actions, similar to ephedra. These effects are not likely caused by C. aurantium alone, because an eightfold higher dose of synephrine … had no effect on blood pressure, but may be attributable to caffeine and other stimulants in the multi-component formulation.” (The American Journal of Medicine (2005) 118, 998-1003). In 2004, attorney Marc Ullman requested FDA records on Bitter Orange adverse events from the FDA under the Freedom of Information Act. Scrutinizing these files, he found that many so-called adverse events supposedly related to Bitter Orange were actually for unrelated products, combination formulas, pre-existing conditions etc; reporting that, “In its response to the April 14 FOIA, FDA disclosed it had conducted no research whatsoever concerning either the safety or efficacy of Citrus aurantium.” (Natural Products Insider) The American Herbal Products Association also reviewed every adverse event report on Bitter Orange disclosed under another FOIA request and, after eliminating products also containing ephedra and/or caffeine, found only one minor adverse event (weakness, leg swelling) remaining in the FDA archives, which involved a woman also being medicated for osteoarthritis, hypertension, and diabetes. (HerbalGram. 2006;69:52-55) Another study reported that, looking at formulations including Bitter Orange and caffeine with other herbs, “Laboratory testing (including vital signs, serum chemistries, CBC with differential, urinalysis, and electrocardiography) revealed no significant changes.” (Curr. Ther. Res., 60, 145 - 153.) And in another report, “Bitter orange dried-fruit extract did not significantly alter the [heart rate] or blood pressure after a single dose was administered.” (Pharmacotherapy, Dec. 2005) Yet another study reported that bitter orange had no significant effects on any of the cardiovascular variables measured. (Journal of Clinical Pharmacology, 2001;41:1059-63) Another small study reported small increases in these measures, but the point is that strong cautions are premature, at best. One expert has stated that synephrine works differently if synthesized or injected, rather than orally taking the natural herbal extract. (Experimental Biology and Medicine (vol. 229) and Washington Post 9/7/05). There is still reasonable doubt that Bitter Orange supplements have caused any serious adverse events. The herb kava is also the subject of a caution. I personally use this herb, and have looked at the few, unverified reports relating to liver problems and concluded that they are anecdotal and probably unrelated to use of the herb. Some toxicology experts note that the vast majority of such reports are unverified and that “kava extracts continue to demonstrate a far better risk-to-benefit ratio [than medical options].” (Toxicology Letters, Volume 150, Issue 1, 15 April 2004) My routine liver function tests remain optimal. I was surprised that CR touts the “USP Verified” mark, a certification that is not even as stringent and broad-based as the new federal cGMPs, which are mandatory. This explicit endorsement of a commercial testing program that does not yet meet the new national standard seems misplaced, and is also unfair to imply that GMP-certified manufacturers audited by competing certifying agencies have lesser quality controls. I believe that CR has missed the mark in portraying dietary supplements as dangerous and unregulated by using inconclusive, outdated and unrepresentative data. Why doesn’t the magazine to raise its coverage of these issues to the same high standard as its other reporting? Scaring consumers into using more dangerous medical treatments by such methods may sell magazines and gain media exposure, but at the cost of CR’s credibility, consumers’ wallets and real lives lost. Reactions to properly prescribed pharmaceutical drugs reportedly cause over 100,000 deaths per year and may be the fourth leading cause of death in the US; even ignoring medical errors and overdoses. (JAMA, Apr 1998; 279: 1200 - 1205.) Positioning herbs and other dietary supplements as dangerous, when they are rarely life-threatening, is irresponsible and completely disproportional to their relative safety.

Tuesday, December 11, 2007

Natural Health: Ten Predictions for the Year 2008

Natural Health: Ten Predictions for the Year 2008 By Neil E. Levin, CCN, DANLA 12/10/2007 The New Year will bring more proof of antioxidant benefits for human health. Recent research shows that antioxidants help to maintain healthy brain functions during aging, protect brain and nerve cells, and prevent hormones and cholesterol fractions from oxidizing to become more harmful forms. Look for an expanded understanding of the benefits of these synergistic nutrients in 2008. 2008 will provide more proof of omega-3 fatty acids’ benefits. For example, DHA helps to maintain healthy balances of cholesterol fractions and protects the brain and nerves. EPA helps normalize cell membranes and cellular health. These essential fats are typically very low in the American diet, so dramatic results could occur in clinical trials providing these nutrients to participants. There will be more safety scares regarding popular prescription and Over-The-Counter drugs, creating new safety warnings and label cautions. Since the most popular medications are typically blocking or inhibiting natural body functions (calcium channel blockers, cholesterol production inhibitors, serotonin re-uptake inhibitors, stomach acid production inhibitors, etc.) rather than dealing holistically with the causes of problems that create body imbalances (lack of optimal levels of nutrients, environmental chemicals and metals, chronic stress - lack of deep sleep, low fiber - high carbohydrate diets, etc.), major side effects from such drugs are inevitable. Side effects from pain medications will become more evident, increasing the number of people looking for safer alternatives. Herbs and spices are the major natural alternatives with some scientific evidence of efficacy. The market for organic and local foods will continue to grow at amazing levels. This will put pressure on the regulatory, farm and grocery industries to manage these products and segregate them to maintain their integrity. That contrasts with the increased reliance on genetically engineered corn to produce ethanol that raises food costs and increases the use of farm chemicals. And there is much evidence that non-genetically engineered foods are both environmentally and nutritionally superior to their modified cousins, while natural farming techniques are proving superior to chemical and genetically engineered farming in terms of managing fuel and seed costs, water use, improving both crop yields and selling prices, etc. Millions of farmers around the world have already weaned themselves from the chemical-genetic “green revolution” to use appropriate local farming techniques and have actually been more successful as a direct result of truly “green” practices. America has begun to awaken to the benefits of local and organic foods in terms of freshness, reducing the use of fossil fuels for transportation and demonstrable benefits to local economies. Watch for these trends to accelerate in 2008. Blood pressure and blood sugar concerns will continue to grow, along with a medical backlash attacking natural strategies to manage these concerns. However, science will also continue to amass evidencing the positive health benefits of natural products to help people maintain already healthy blood levels, in contrast with the poor symptom management that is a characteristic of pharmaceutical or surgical interventions used to “correct” chronic biological imbalances. These issues dovetail with current obesity and cardiovascular concerns and are part of the same syndrome related to chronic stress and poor diets. Positive reports of the benefits of higher levels of vitamin D will continue to proliferate, though with some bias against the synthesized vegetarian/vegan form of vitamin D2 versus D3 from fish oil or sheep lanolin. Health authorities will be pressured to raise both the recommended Daily Value and the Upper Limit of vitamin D to five times the current levels. Research will continue to accumulate regarding the health benefits of whole grains and whole foods, as will reports of people allergic or sensitive to gluten, corn, and other grains. More mainstream processed groceries will have whole food options in 2008. This is a good trend, though with cautions for the sensitive minority. There will be continuing claims that “dietary supplements” are illegally contaminated with steroids or other pharmaceutical drugs. These claims will typically be self-serving and defensive, made primarily by athletes accused of cheating by using banned substances. Beyond the obvious fact that legitimate supplement manufacturers do not have illegal substances on hand and that GMP (Good Manufacturing Practices certification) quality manufacturing protocols would avoid inadvertent contamination, these accusations are a barometer of how “unregulated” the mainstream media and the public thinks dietary supplements are. While there are plenty of regulations written specifically to regulate supplements, and even the FDA claims that it has adequate regulatory authority, somehow certain medical authorities and journalists like to pretend otherwise; perhaps to have a handy punching bag to deflect attention from the well-documented hundreds of thousands of deaths caused annually from pharmaceuticals and medical errors. In any case, expect more of this blame game in 2008. With a presidential election campaign under full swing, no meaningful legislation regarding health care or Medicare will be passed in 2008. There will be a narrow window of opportunity for such measures in 2009 with a new Congress and Administration. Natural health advocates will continue to press for meaningful use of nutrition to combat the major causes of disease and illness in America, with probably little impact against the lobbying might of the medical and pharmaceutical interests. The wild card is if, by some miracle, the insurance industry finally notices that their costs could be contained by the use of targeted nutrition such as the use of calcium and vitamin D to prevent osteoporosis, antioxidants to prevent age-related macular degeneration and oxidative-related glaucoma that affect vision and impact seniors’ independence, omega-3 fats to prevent coronary heart disease, the use of fiber to manage healthy cholesterol levels, etc. That could swing the pendulum towards the use of natural products to control healthcare costs. But I’m not betting on it happening in 2008, though I hope that they wise up soon enough to manage the recently overactive increases in medical costs. There will be additional, unjustified health scares about essential nutrients in 2008. Especially beware of “meta-analyses” that mix unrelated studies and magnify the number of variables using often-flawed statistical models. Some probable targets: · Kava (a few unrelated, anecdotal reports of liver problems) · Folic acid (a few reports of higher cancer levels despite a lot of cellular data indicating the opposite, creating a backlash against re-fortification of refined foods) · Vitamin E (continued championing/publicity of questionable meta-analyses over more rigorous blood-level studies will continue the inexplicable controversy over the safety of this essential nutrient that most Americans are reportedly deficient in.) · Beta-Carotene (again, blood level studies and total antioxidant studies repeatedly show its safety, but studies measuring only administration of certain doses to sick populations that may be deficient in antioxidants create a conflicting picture.) · DHEA (this adrenal hormone has been vilified as a “steroid”, but is no more so than vitamin D. No less an authority than physician and US Senator Tom Coburn has sent a letter to his colleagues informing them that he has reviewed the issues and urging them to avoid a ban of this natural product, which is useful in anti-aging strategies but not for bodybuilders. Efforts by leading senators (including presidential candidates Clinton and McCain) to ban DHEA are ongoing.