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Archive for Public Health

Infant and Toddler Swimming Programs: Are They Safe and Effective?

It’s now officially summertime, but people have been hitting the pools and beaches for weeks in many parts of the nation. In fact it has been well into the 90’s for over two month here in Baton Rouge, which is what I blame for the early exit of LSU from the College World Series. Our boys just weren’t used to that cold and dry northern weather.

Not surprisingly, the media has already been busy reporting on some of the many tragic drowning incidents that have occurred thus far, and Facebook profiles have been full of commentary from worried parents. And, as usual, there are businesses offering infant and toddler swimming lessons costing hundreds and even thousands of dollars per course, some of which come with claims of decreasing the risk of drowning in the young participants.

At what age can a child begin swimming lessons? According to Jan Emler of Emler Swim School, teaching a child to swim can start “As soon as the umbilical cord falls off.” Emler, like more reputable proponents of infant and toddler swimming programs, doesn’t actually put newborns into swimming pools for lessons (I’ll leave water birthing enthusiasts out of this discussion). For the most part these programs only cover bath time activities to help younger babies grow comfortable being in the water. Truly teaching infants and toddlers behaviors aimed at reducing the likelihood of drowning in the event of falling into a body of water doesn’t usually start until 6 months of age. There are exceptions.

But when should these lessons start, are they safe and do they work? Or do they actually put children at risk of injury and the parent at risk of having a false sense of security? Until their updated 2010 policy statement on the prevention of drowning, the American Academy of Pediatrics came down firmly against initiating swimming lessons in children less than 4 years of age for a number of very good reasons. Why did they soften their stance and does their change of opinion support the claims that are being made by infant and toddler swimming programs?  First some background information.
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Posted in: Basic Science, Public Health

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The murder of autistic teen Alex Spourdalakis by his mother and caregiver: What happened?

Editor’s note: This is an extra “bonus” post. Basically, it’s a revised version of a post I did at my not-so-super-secret-other-blog last week. The issue, however, has disturbed me so much that I felt it appropriate to post it to SBM as well. Fear not. There will be a new post by yours truly on Monday.

Sometimes, in the course of blogging, I come across a story that I don’t know what to make of. Sometimes, it’s a quack or a crank taking a seemingly science-based position. Sometimes it’s something out of the ordinary. Other times, it’s a story that’s just weird, such that I strongly suspect that something else is going on but can’t prove it. So it was a few months ago when I came across the story of Alex Spourdalakis, a 14-year-old autistic boy who became a cause célèbre of the antivaccine crank blog Age of Autism.

I first noticed the story in early March when perusing AoA and came across a post by Lisa Goes entitled Day 19: Chicago Hospital Locks Down Autistic Patient. In the post was a shocking picture of a large 14-year-old boy in a a hospital bed in four-point restraints. He was naked, except for a sheet covering his genitals. A huge gash was torn in the bedsheet, revealing the black vinyl of the hospital bed beneath. The boy’s name, we were informed, was Alex Spourdalakis. Further down in the post was another, equally shocking, picture of Alex that, according to Goes, showed severe dermatitis on Alex’s back due to the hospital sheets. The photos shocked me for two reasons. First, if the story was as advertised (something always to be doubted about any story posted at AoA), for once I thought that I might be agreeing with Goes and thinking that AoA was actually doing a good thing, as disconcerting as that possibility was to me. Second, however, I was extremely disturbed by the publication of such revealing photos of the boy. Undoubtedly, Alex’s mother must have given permission. What kind of mother posts pictures like that of her son for all the world to see? Then there appeared a Facebook page, Help Support Alex Spourdalakis, which pled for readers to help the Spourdalakis family.

As I said, something just didn’t seem right at the time.
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Posted in: Legal, Neuroscience/Mental Health, Public Health, Vaccines

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Don’t Text and Drive

We accept certain risks for the benefits of modern society. We pump explosive gas into homes, we run wires with potentially fatal electrical currents through our neighborhoods, and we ski at breakneck speeds down mountains for fun.

We also allow people to operate vehicles weighing thousands of pounds at speeds that are potentially deadly if a mishap occurs. In 2011 there were 32,367 motor vehicle deaths in the US (10.4 per 100,000 population). Interestingly, this is down quite a bit from previous years. As a percentage of population the highest motor vehicle death year was 1935, with 34,494 deaths, or 27.1 per 100,000. The highest absolute number of motor vehicle deaths was in 1970, at 52,627.

The number of deaths has been mostly trending down since 1996, which is interesting because over this same period of time cell phone use has risen tremendously. There are various reasons for the decreased in fatalities – helmet laws, seatbelt laws, cracking down on drunk driving, increased car safety, and intermediate drivers licenses for new drivers to name a few. These trends have probably obscured any increase in car accidents from using portable communication devices while driving.

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Posted in: Public Health

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Science-Based Public Service Announcements

Changing behavior is difficult. It is also an increasing priority for health care. We have entered a period of history when lifestyle choices have a dominant impact on health and longevity. People are no longer dying young of incurable infectious diseases in significant numbers. Rather they are surviving long enough to die from their bad habits.

Further, health behaviors are having a huge impact on the overall cost of health care. So the motivation is greater than ever to impact public health by influencing behavior. Yet, we are not very good at doing this.

It’s not that we’re not trying – it’s simply that having a large influence on people’s day-to-day behavior is remarkably difficult. There is ongoing research looking at how to effectively change behavior at the individual and public level, but it is complex, often conflicting, and new techniques at best yield only marginal gains.

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Posted in: Public Health

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The “no compassion” gambit

As usual, I was impressed with Mark Crislip’s post on Friday in which he discussed the boundaries between science-based medicine and what we sometimes refer to as woo or what Mark often refers to as sCAM. It got me to thinking a bit, which is always a dangerous thing, particularly when such thinking leads to my writing something for my not-so-super-secret other blog (NSSSOB). Of course, this is not my NSSSOB, but that doesn’t make it that much less dangerous. Be that as it may, I started thinking about a gambit I started noticing a few years ago being directed at me by the targets of my logorrheic deconstructions. Actually, I noticed it from the very beginning, when I first started blogging about SBM versus quackery way back in 2004 and even before, back when I was one of a doughty band of pro-science types who waded into the Wild West of online forums known as Usenet, in particular the misc.health.alternative newsgroup.

I happen to be in Washington, DC as I write this. In fact, as I write this I’m here to attend the annual meeting of the American Association for Cancer Research (AACR), the better to soak in all that cancer science goodness and (hopefully) be pumped up to go back and keep trying to do good science and, hopefully, manage to get my lab funded. Of course, the latter task is a really daunting these days, a truly depressing thing to contemplate, given that the current payline for the National Cancer Institute is around the 7th percentile, which makes me worry about how much longer my lab will be open. My self pity aside, Mark got me to thinking about the characteristics of purveyors of non-science-based medicine (i.e., quackery and quackademic medicine) compared to SBM. More precisely, I started thinking about a difference that what Mark calls sCAMmers try to pin on those of us who try to defend SBM against the forces of pseudoscience. To introduce this concept, I think it’s worth going back a few years to a comment I got a long, long time ago on a blog far, far away (i.e., my NSSSOB):

When it comes to autism, you seem to have lost something that I think every physician is well-served to have in abundance: compassion.

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Posted in: Cancer, Health Fraud, Public Health, Science and the Media, Vaccines

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The final nail in the coffin for the antivaccine rallying cry “Too many too soon”?

There are some weeks when I know what my topic will be—what it must be. These are weeks in which the universe gives the very appearance of handing to me my topic for the week on the proverbial silver platter with a giant hand descending from the clouds, pointing at it, and saying, “Blog about this, you idiot!” Usually, it’s because a study is released or something happens or a quack writes something that cries out for rebuttal. Whatever it is, it’s big and it’s unavoidable (for me, at least).

This is one of those weeks.

The reason it’s one of those weeks is because just last Friday, as I was driving to work, I heard a news story on NPR about a study that had just been released in the Journal of Pediatrics. The story, as it was reported, noted that the study being discussed looked specifically at a certain antivaccine trope and found for yet the umpteenth time that vaccines are not correlated with an increased risk of autism. Normally the news that a study had once again failed to find a link between vaccines and autism would be as surprising as a study finding that the sun rises in the east and sets in the west, or finding that water boils at 100° C at sea level. At this point, the evidence is so utterly overwhelming that there is not a whiff of a hint of a whisper of a correlation between vaccines and autism that it has become irritating that antivaccine activists keep pressuring scientists to do the same study over and over again, coming up with the same results over and over again, and then seeing antivaccinationists fail to believe those same results over and over again. Apparently, antivaccine activists think that if the same sorts of studies are done enough times, there will be a positive result implicating vaccines as a risk factor for or contributing cause to autism. By sheer random chance alone, this might happen someday, given the definition of statistical significance, but so far there has not been a single large, well-designed epidemiological study by reputable researchers that has found a link.
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Posted in: Epidemiology, Public Health, Vaccines

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Once more into the screening breach: The New York Times did not kill your patient

One of the more depressing things about getting much more interested in the debate over how we should screen for common cancers, particularly breast and prostate cancer, is my increasing realization of just how little physicians themselves understand about the complexities involved in weighing the value of such tests. It’s become increasingly apparent to me that most physicians believe that early detection is always good and that it always saves lives, having little or no conception of lead time or length bias. Sadly, just last week, I saw another example of just this phenomenon in the form of an article written by Dr. George Lombardi entitled My Patient, Killed By The New York Times. The depth of Dr. Lombardi’s misunderstanding of screening tests permeates the entire article, which begins with his recounting a story about a patient of his, whose death he blames on The New York Times. After describing the funeral of this 73-year-old man who died of prostate cancer, Dr. Lombardi then makes an accusation:

This one filled me with a special discomfort as I knew a secret: He didn’t have to die. I knew it and he had known it. Had he told?

About 5 years ago he had just retired and had a lot more time on his hands. He was a careful man, lived alone, considered himself well informed. He got into the habit of clipping articles on medical issues and either mailing them to me or bringing them in. They came from a variety of sources and were on a variety of topics. He wasn’t trying to show me up. He was genuinely curious. I kidded him that maybe he’d like to go to medical school in his retirement. ‘No’ he laughed, ‘I just like to be in the know.’

When he came in for his physical in 2008 he told me he’d agree to the DRE but not the PSA (his medical sophistication extended to the use of acronyms: DRE stands for digital rectal exam where I feel the prostate with my gloved finger for any abnormality and PSA for prostatic [sic] specific antigen which is a blood protein unique to the prostate and often elevated in prostate cancer). He had read that the use of PSA as a screening test was controversial. This was the year that the United States Preventive Services Task Force, a government panel that issues screening guidelines, recommended against routine PSA screens for older men. It was often a false positive (the PSA was elevated but there was no cancer), led to unnecessary biopsies, and besides most prostate cancers at his age were indolent and didn’t need to be treated. I countered that prostate cancer was the second leading cause of cancer deaths in men and that it was better to know than not to know. This way it would be our decision. The patient with his doctor deciding what was best. But no, he wanted to stick to his guns and since the DRE was normal no PSA blood test was sent.

After describing a conversation with the man’s daughter, who said, “My father was killed by The New York Times,” Dr. Lombardi then goes on to anecdotal evidence and a cherry-picked publication to support his view, quoting an oncologist who says he’s “seeing more men presenting with advanced prostate cancer” and then referring to a single paper in the current Annals of Internal Medicine about PSA screening. Before I look at the article and a recently published paper on screening mammography that made the news, I can’t help but point out that I (mostly) agree with Dr. Lombardi when he says:

Public health doctors, policy experts and journalists tend to look at the population as a whole. It is a better story if it is one story. It makes a better headline. Their statistics are people I sit across from everyday trying to figure out what the future holds. We each have our job to do.

The problem is, of course, that Dr. Lombardi takes that observation and draws the wrong conclusion, namely that his patient died because of lack of screening. He attacks a straw man, sidestepping the true argument, namely that evidence shows that PSA screening probably causes more harm than good for men at average risk of prostate cancer. Unfortunately, Dr. Lombardi obviously does not understand some very basic concepts behind cancer screening, nor does he apparently recognize that doctors who deal with the population-level data that we have regarding screening tests and try to apply them to individual patients are actually looking in a very systematic way about what the benefits of screening are to the individual patient. More on that later. In the meantime, although I wouldn’t go quite as far as Dr. John Schumann did in criticizing Dr. Lombardi, I do view his lament as a jumping off point to look at some recent data on screening for the two most common cancers, breast and prostate.

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Posted in: Cancer, Diagnostic tests & procedures, Politics and Regulation, Public Health, Science and the Media

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Smoking: The Good News and the Bad News

The principles we espouse on Science-Based Medicine are vitally important, but some of the subjects we address are not so important in the big scheme of things. Homeopathy and electrodermal diagnostic devices don’t actually harm very many people. For today’s post, I’m going to follow the Willie Sutton rule and go where the money is, so to speak.

Smoking is the leading preventable cause of death. No prospective double blind randomized controlled studies have been done, or ever could be done; but a mountain of evidence converging from many avenues has established the health dangers of smoking beyond any doubt. Hill’s criteria of causation have been amply fulfilled.  Smoking causes 90% of all deaths from lung cancer and chronic obstructive pulmonary disease (COPD). It increases the risk of coronary heart disease, stroke, several types of cancer, infertility, stillbirth, sudden infant death syndrome (SIDS), osteoporosis, and premature skin aging (wrinkles). The dangers of second-hand smoke have been amply documented, and where smoke-free laws have been passed there has been a drop in the incidence of heart attacks and of emergency room visits for children with asthma.

Two new studies published in The New England Journal of Medicine reinforce what we already knew and offer both good news and bad news.  (more…)

Posted in: Public Health

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An open letter to Penn & Teller about their appearance on The Dr. Oz Show

An open letter to Penn & Teller about their appearance on <em>The Dr. Oz Show</em>
OzPT

 

Dear Penn & Teller,

I really don’t want to say this, but I feel obligated to. I’m afraid you screwed up. Big time. (Of course, if this weren’t a generally family-friendly blog, where we rarely go beyond PG-13 language, I’d use a term more like one that Penn would use to describe a massive fail, which, as you might guess, also starts with the letter “f”; I think he’d appreciate that.)

I’m referring, of course, to your appearance on The Dr. Oz Show one week ago (video: part 1, part 2, part 3, part 4). Before I begin the criticism, let me just take care of the obligatory but honest statement that I am a fan. I’ve been a fan for a long time. Indeed, I remember seeing you guys perform in Chicago back in the late 1990s when I was doing my fellowship at the University of Chicago. I’ve also seen you in Las Vegas a couple of times, most recently a couple of years ago (see pictures below) at TAM. The two of you have become skeptical icons, through your association with James Randi and over the last several years through your Showtime series Bullshit!, which is advertised with the tagline, “Sacred cows get slaughtered here.” And so they did for the eight seasons Bullshit! was on TV. When you guys were on, it was a thing of beauty to behold, both from the standpoint of entertainment and skepticism.
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Posted in: Faith Healing & Spirituality, Homeopathy, Public Health, Science and the Media

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Legislative Alchemy: Naturopathy 2013

A fresh season of state legislative sessions is upon us and with it comes the ubiquitous attempts by purveyors of so called “complementary and alternative medicine” (or “CAM”) to join the health care provider fraternity. Via the magic of legislative alchemy, state legislatures transform pseudoscientific diagnoses (e.g., “chronic yeast overgrowth”) and treatments (e.g., homeopathy) into faux, but legal, health care. Once the imprimatur of legitimacy is bestowed by the state in the form of a health care practice act tailored to their special brand of quackery, these newly licensed health care providers are free to foist their practices onto an unsuspecting public and charge them for the privilege. All of this is done under the false assumption that such legislation is necessary to protect the public health, safety and welfare.

We might well want to consider how far this whole thing is going. Will practitioners of CAM split into an ever-expanding number of CAM provider guilds, all with their own practice acts? First, chiropractors were the only CAM practitioners who managed to get themselves licensed in all 50 states. Then along came acupuncturists, who are now licensed to practice in over 40 states. A few states license homeopaths. Some states licensed naturopaths early on. Now the naturopaths, licensed in 16 states, are in a full court press to catch up and legitimize themselves with licenses to practice “naturopathic medicine.”

Why? Because, according to Lorilee Schoenback, ND, a Vermont practitioner and American Association of Naturopathic Physicians (AANP) Board member:

If the law [the Affordable Care Act, or ACA] is implemented as intended NDs in 16 states will immediately be covered by insurance.

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Posted in: Herbs & Supplements, Homeopathy, Legal, Naturopathy, Pharmaceuticals, Politics and Regulation, Public Health

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