“Will Tylenol harm my baby?”
Pharmacists are among the most accessible of health professionals, and so we receive a lot of questions from the public. No appointment required, and the advice is free. Among the most frequent sources of questions are women seeking advice on drug use in pregnancy. This is an area where some health professionals are reluctant to tread. Some prefer to redirect all of these questions to physicians. But physicians are not always easily accessible, and few want to make an appointment just to ask what appears to be a simple question: Is it safe, or not? Admittedly, addressing questions about drug use in pregnancy can be challenging. There are no randomized controlled trials we can look to — there’s only messier, less definitive data. Our responses are filled with cautious hedging about risk and benefit, describing what we know (and don’t know) about fetal effects. In the pharmacy, one of the most common questions from pregnant women is about the use of acetaminophen (aka paracetamol aka APAP), more commonly known by the brand name Tylenol. Google “Tylenol and pregnancy” and you get 4.8 million results. Which source should you trust? (more…)
A comment from the blog:
Every single time – bar none – I have had a conversation with someone about CAM and its modalities, they are absolutely astonished when I explain to them what the modality really is. One story I love telling comes from my friend in the year behind me. His parents are professional chemists and he came home one day and saw his mother had a bottle of homeopathic medicine. He asked why and she gave the typical non-committal response of “well, I thought it may help and I saw it on the shelf at the pharmacy.” He explained what homeopathy actually is and they were absolutely dumbfounded. They are well aware of Avogadro’s number, after all. People generally don’t study what the CAM in question actually is – merely the fluff PR garbage that gets touted around and without direct and clear demonstration of harm, give it a pass as a result. After all, the business of real medicine is time consuming and difficult enough.
Participating in activities that have a permanent record gives one the fortunate, or unfortunate, opportunity to revisit the past and see just how you worked early in a career. (more…)
I glanced at my pharmacy license recently, and noticed I became a licensed pharmacist almost exactly twenty years ago. Two decades seems like a long time to do pretty much anything, yet I can still vividly recall some of the patients I encountered early in my career, working evenings in a retail pharmacy that drew heavily on the alternative medicine crowd. It was the first pharmacy I’d ever seen that sold products like homeopathy, detox kits, salt lamps, ear candles, and magnetic foot pads. And the customers were just as unorthodox. There were some that told me they manipulated their own pH, and others that insisted any prescription drug was designed to kill. And there was a huge clientele that relied on the pharmacy for their “bioidentical” hormones. It was an instructive learning experience, as it was as far from the science of pharmacy school as you could expect to find in a place that still called itself a pharmacy. One of the really interesting aspects of that pharmacy was the enormous supply of vitamins and supplements for sale. It stretched over multiple aisles and even back into where the drugs were kept, as there were some brands kept behind the counter. This wasn’t for any regulatory reason – it was because these were the “naturopathic” supply, the brands often recommended by naturopaths. In order for this pharmacy to sell them they had to keep the products behind the counter, presumably to grant these supplements a veneer of medical legitimacy. After all, they were “special”, and had the prices to prove it. (more…)
Anyone publicly writing about issues of science and medicine from a pro-science perspective likely gets many e-mails similar to the ones I see every week. Here’s just one recent example:
Im sorry the medical community has become decadent and lazy as most that follow your stance could care less to study the real truth. I have also seen it much more deviant as many professionals know the risks and harm vaccination cause but continue to push it through there practices because of pure greed. Many are also scared of loosing there practices for not following the corrupt industry. Im sorry but the medical industry has become drug pushing decadent slobs that only care about there bottom line.
The e-mailer clearly has a particular narrative that he is following (in addition to the amusingly common poor grammar and spelling). He even writes at one point in our exchange, “the details really don’t matter at this point what matters is what the bigger picture…” He is certain of his big picture conspiracy narrative. The details are unimportant.
You may have noticed that men and women are different. I hope you have noticed. As the French say, vive la différence! It’s not just that one has dangly bits and the other has bumpy chests. Or that one has to shave a beard and doesn’t like to ask for directions while the other has menstrual periods and likes to discuss feelings. There are differences in physiology and in the incidence of various diseases. For instance, normal lab values for hemoglobin are higher for men than for women, and autism is more prevalent in males while multiple sclerosis is more prevalent in females.
In the past, women have been underrepresented in clinical studies; when the first studies of aspirin for cardiovascular prevention came out, we knew it was effective for men, but we didn’t have enough evidence to recommend it for women. This is changing; researchers today are more aware of the need to include women in their studies. Now the American Heart Association/American Stroke Association (AHA/ASA) has issued the first evidence-based guidelines for reducing the risk of stroke in women. (more…)
In a recent post I shared a bit of my personal, near-death experience with measles during the US epidemic of 1989-1991. As I describe in that post, I contracted a very serious measles infection at the end of medical school, and was highly infectious when I interviewed for a residency position at Seattle Children’s Hospital. Like others my age who received an ineffective, killed measles vaccine between 1963 and 1967, I had not been adequately protected. The MMR vaccine was not yet available, and no boosters were recommended at the time. Unfortunately, though my measles titers (a test of immunity to measles) were checked when I entered medical school, the school’s student health department failed to notice or respond to the results – I was not immune and did not receive a booster dose at that time, as I should have. That mistake was huge, and could have cost me my life. It also caused me to potentially sicken many vulnerable children during my tour of the hospital, as well as others I may have inadvertently exposed during the window of communicability as I walked the streets of Seattle. The Department of Health had to be called to trace all of my steps and attempt to track down and protect any potential contacts.
PLOS (the Public Library of Science) is a non-profit open access publisher of science articles. Their goal is to make scientific data accessible to everyone, in the name of transparency and open communication. Now they have taken their approach one step further, announcing their policy that all articles published in a PLOS journal must submit their original data so that anyone can access and analyze it for themselves.
In an effort to increase access to this data, we are now revising our data-sharing policy for all PLOS journals: authors must make all data publicly available, without restriction, immediately upon publication of the article. Beginning March 3rd, 2014, all authors who submit to a PLOS journal will be asked to provide a Data Availability Statement, describing where and how others can access each dataset that underlies the findings. This Data Availability Statement will be published on the first page of each article.
They allow for exceptions—when subject confidentiality is an issue, sensitive information related to endangered species, and when the authors do not own the data. In such cases, however, data must be available upon request, and not controlled by the authors. Otherwise the raw data must be made available.
One of the encouraging shifts I’ve seen in health journalism over the past few years is the growing recognition that antivaccine sentiment is antiscientific at its core, and doesn’t justify false “balance” in the media. There’s no reason to give credibility to the antivaccine argument when their positions are built on a selection of discredited and debunked tropes. This move away from false balance and towards a more accurate reflection of the evidence seems to have started with the decline and disgrace of Andrew Wakefield and his MMR fraud. And there is now no question that antivaccine sentiment has a body count: Simply look at the resurgence of preventable communicable disease. Today, antivaccinationists are increasingly recognized for what they are – threats to public health. It seems less common today (versus just 5 years ago) that strident antivaccine voices are given either air time or credibility in the media.
But false balance on topics like influenza can occur without giving a voice to groups like antivaccinationists. A more subtle technique to shift perceptions is both widespread and hard to detect, unless you’re aware of it: the naturalistic fallacy, known more accurately as the appeal to nature. In short, it means “It’s natural so it’s good” with the converse being “unnatural is bad.” In general, the term “natural” has a positive perception, so calling a product (or a health intervention) “natural” is implying goodness. The appeal to nature is so common that you may not even recognize it as a logical fallacy. Unnatural can be good, and natural can be bad: Eyeglasses are unnatural. And cyanide is natural. Natural doesn’t mean safe or effective. But the appeal to nature is powerful, and it’s even persuasive to governments. If we believe that health interventions and treatments should be evaluated on their merits, rather than whether or not they’re “natural”, then decisions to regulate “natural” products differently than the “unnatural” ones (like drugs) makes little sense. Yet the Dietary Supplement Health and Education Act was a legislative appeal to nature, introducing a different regulatory and safety standard for a group of products while drawing a fallacious distinction with “unnatural” products like drugs. Canada fell for the appeal to nature too: It has the Natural Health Products Regulations which entrenched a lowered bar for efficacy and safety for anything a manufacturer can demonstrate is somehow “natural”. (more…)
The “just asking questions” maneuver is familiar to many skeptics. The idea is to feign neutrality, to insulate oneself from accountability or being held to answer for any specific position, but meanwhile to sow doubt about a scientific claim by raising (dubious) questions.
Sometimes the “I’m just asking questions” gambit also tries to disguise itself as sincere journalism. That’s what journalists do, right, ask the tough questions, uncover the uncomfortable truth?
I find this approach particularly deceptive. It tries to hide the fact that the journalist is working off of a particular narrative. Asking questions is, in fact, just another narrative style, one that is meant to lead the reader/viewer to a particular conclusion about the subject. The narrative determines what questions are asked and how they are answered.
A perfect example of this deceptive approach is the HIV denialist movie, House of Numbers. Here is the synopsis from the movie’s website:
What is HIV? What is AIDS? What is being done to cure it? These questions sent Canadian filmmaker Brent Leung on a worldwide journey, from the highest echelons of the medical research establishment to the slums of South Africa, where death and disease are the order of the day. In this up-to-the-minute documentary, he observes that although AIDS has been front-page news for over 29 years, it is barely understood. Despite the great effort, time, and money spent, no cure is in sight.
One of these things is not like the other
Treating a fever with medication like Advil or Tylenol is reflex action when we come down with colds and influenza. But could treating fevers actually worsen an illness and contribute to its spread in the population? That’s the impression you may have gained from the headlines and press last week, where antipyretics (fever-reducing medications) were described as some type of “anti-vaccine”:
Fever-reducing meds encourage spread of flu: McMaster report
Taking over-the-counter flu medication to cut your fever might help you feel better, but it might not be so good for the people you come into contact with.
When it comes to fever, your mother really did know what’s best
Who would have thought that the simple giving of a fever reducing agent, to either one of our family members or ourselves before we go off to school or work, may inadvertently lead to the death of someone that we see that day?
Use of fever-reducing drugs may lead to tens of thousands more influenza cases
The bottom line is that fever suppression increases the number of annual cases by approximately five per cent, corresponding to more than 1,000 additional deaths from influenza in a typical year across North America.