If something is either essential or good for the health, surely more of it must be good for you? Such at any rate is the reasoning of half the American population who, between them spend more than $30 billion on dietary supplements, that is to say $200 a head per annum. All things considered, these supplements must be pretty safe, unlike prescription drugs, for few people die or have serious side-effects from them. Whether they do any good, other than as placebos, is another question entirely of course.
According to an article in a recent edition of the New England Journal of Medicine there are 85,000 different supplements and combinations of supplements on the market, meaning that each of them sells, on average, approximately $375,000 worth per year. Given the popularity of some, this must mean that many are in a very small way of business indeed. It is the job of the Food and Drug Administration to monitor the safety of all these preparations: a task, one might have supposed, quite beyond the capacity of even the largest bureaucracy.
Not all the supplements are safe. One, called OxyElite Pro, caused hepatitis and even liver failure, first spotted by a liver transplant surgeon in Honolulu. It was used by body-builders to “burn off” fat, and it is isn’t difficult to find people on the internet who mourn the fact that the product has been withdrawn from the market, despite its potentially dangerous side-effects (one person died).
Dietary supplements do not undergo the rigorous testing, either as to efficacy or safety, that pharmaceuticals undergo. The author of the article points out that many supplements contain newly-devised amphetamine-like stimulants, anabolic steroids, untested chemical analogies of Viagra and various antidepressants, and weight-loss substances that have already been banned from the pharmaceutical market.