Taghealth

Widespread Vaccine Exemptions Are Messing With Herd Immunity

Another one from John Timmer at Ars:

Despite the amazing benefits, immunization rates have been falling, driven by a fear that vaccines cause health problems such as autism. The autism risk has been both thoroughly debunked and the paper that originally suggested it turned out to be the product of an unethical, financially motivated individual. Despite this debunking, surveys show that a quarter of US parents think that vaccines can trigger autism, and rates of vaccination have continued to fall in many states. A new study looks at incoming kindergartners in California, and finds that the lack of vaccination is threatening herd immunity in some schools, and that some measures of risk have doubled in just three years. […]

Herd immunity occurs when a few unvaccinated children are protected by the fact that almost everyone around is vaccinated and therefore cannot infect them. It’s important for those for whom vaccines have not worked, those who have immune problems, or those who cannot be vaccinated due to specific health risks. But it requires very high rates of vaccination, typically 80-90 percent. And, in California, it’s at risk of breaking down. “The number of kindergartners attending schools in which there were more than 20 exempted kindergartners almost doubled (from 1937 in 2008 to 3675 in 2010),” the authors note.

Full Story: Ars Technica: Widespread vaccine exemptions are messing with herd immunity

Medical Tourism In Juarez, The Murder Capital Of the World

Josh Ellis, aka Red State Soundsystem, went to the so-called murder capital of the world, Juarez, Mexico, to get his teeth fixed and lived to tell about it:

The dentist is a taciturn son of a bitch who doesn’t speak much English and he has a device in his hand that looks, in my peripheral vision, like a steel bar with a sharp screw on one side and a thumb dial on the other. He’s going to screw this thing into my ruined back molar like a drywall anchor and rip the tooth out of my skull.

He jabs in another long, sharp needle full of anesthetic. After two and a half hours in the chair — during which time an oral surgeon has removed my upper wisdom teeth by sawing them into pieces and pulling them out through my gum — my face is pretty much numb from my cheekbones to my Adam’s apple. But I still feel the jab, which worries me.

It worries me a lot more, a second later, when he puts his little drywall anchor to the top of my tooth and begins screwing it in. My head is filled with white-hot agony. I yelp and he pulls back. “What?” he says in English. “Pain?”

“Fuck! Yes, there’s pain, Jesus fucking Christ, goddamnit,” I snarl.

So he hits me with the needle again and tries the screw: it still hurts as bad as before, and I scream again. But after those two and a half hours, I just want this over with. “Fuck it, man,” I mutter through lips that feel like they’re constructed of inner-tubes. “Let’s do this thing.”

Of course, what neither of us knows yet is that the dentist is pushing the needle straight into an infected part of my gum, and the infection is immediately soaking up the anesthetic. He might as well be injecting me with sugar water.

Oblivious, he bores in. And that’s when I start screaming for real.

Full Story: Huffington Post: Getting My Uninsured Teeth Pulled In Mexico’s Most Notorious Border Town

The HuffPo article is an abridged version of a longer e-book he’s written. You can buy it the Amazon Kindle version or in a couple other formats.

See also: see my interview with him My interview with Josh about his music.

Don’t Blame Cats for Toxoplasmosis

The Oregonian reports:

“Our concern is that because it has been sensationalized and interpreted as, ‘Your cat can make you sick,’ that really is missing the most dangerous part of toxoplasmosis and human infestation,” says Dr. Theresa Cornwell of Cat Care Professionals in Lake Oswego. “You’re much less likely to get toxoplasmosis from your cat as you are from fruits and vegetables or meat that is contaminated.”

“People tend to forget that the consumption of uncooked or partly cooked meat can be perhaps a more significant source of infection for toxoplasmosis,” agrees state public health veterinarian Dr. Emilio DeBess.

The Centers for Disease Control and Prevention cite toxoplasmosis as the third-leading cause of food-borne illness and death. Half of the 750 deaths attributed to toxoplasmosis each year are believed to be caused by eating contaminated meat, according to the CDC.

Full Story: Oregon Live: The truth about toxoplasmosis: the kitchen more likely source than your cat

Finding the Right Type of Meditation for You Might be Key to Meditation Success

Did you give meditation a chance and decide it’s not your cup of tea? New research suggests you could be missing out on all the health benefits of meditation by simply starting out with a technique not well matched to your personal tastes. […]

Burke and colleagues recently conducted a study of college students new to meditation and their preferences among four meditation techniques — mantra, mindfulness, zen, and qigong visualization. […]

Published on July 7 in the journal Explore: The Journal of Science and Healing, the findings reveal that by finding a form of meditation that works for you, you are less likely to quit. The result of sticking with it? Research-backed benefits of reduced stress, lower blood pressure, and help with addiction problems.

Full Story: NY Daily News: The right kind of meditation for you; Mantra, mindfulness, zen, and qigong visualization are different ways to relax

The paper is here, behind a paywall.

New Frontier for Cybercrime: Implanted Healthcare Devices

Chris Arkenberg on giving new meaning to “body hacking”:

In what amounts to a fairly shocking reminder of how quickly our technologies are advancing and how deeply our lives are being woven with networked computation, security researchers have recently reported successes in remotely compromising and controlling two different medical implant devices . Such implanted devices are becoming more and more common, implemented with wireless communications both across components and outward to monitors that allow doctors to non-invasively make changes to their settings. Until only recently, this technology was mostly confined to advanced labs but it is now moving steadily into our bodies. As these procedures become more common, researchers are now considering the security implications of wiring human anatomy directly into the web of ubiquitous computation and networked communications.

Barnaby Jack, a researcher at McAfee, was investigating how the wireless protocols between implants and their remote controllers opened up potential vulnerabilities to 3rd party attacks. Working with instrumented insulin pumps he found he could compromise any pump within a 300-foot range. “We can make that pump dispense its entire 300 unit reservoir of insulin and we can do that without requiring its ID number”, he noted, adding that making the device empty its entire cartridge into a host’s bloodstream would cause “deep trouble”. Previously, independent security researcher Jerome Radcliff, a diabetic and insulin pump recipient himself, showed a crowd at the 2011 Black Hat Security Conference how he could wirelessly hack into his own pump to obtain its profile, then alter it in a way that would modify his prescription when sent back to the device.

Full Story: Big Think: Inviting Machines Into Our Bodies

See also: Ubicomp Getting Under Your Skin? So Are Hackers

Flawed But Indispensable Take Down of Malcolm Gladwell

SHAME Project, an organization founded by Yasha Levine and Mark Ames of The Exile, recently published a lengthy critique of writer Malcolm Gladwell. I finally read it, and recommend it even though it is a flawed piece. Highlights:

While a student at the University of Toronto, Gladwell’s admiration for Ronald Reagan led him into conservative activist circles. In 1982, while still an undergrad, he completed a 12-week training course at the National Journalism Center, a corporate-funded program created to counter the media’s alleged “anti-business bias” by molding college kids into corporate-friendly journalist-operatives and helping them infiltrate top-tier news media organizations. To quote Philip Morris, a major supporter of the National Journalism Center, its mission was to “train budding journalists in free market political and economic principles.” Over the years the National Journalism Center has produced hundreds of pro-business news media moles, including top-tier conservative talent like Ann Coulter and former Wall Street Journal columnist and editorial board member John Fund.

After graduating from University of Toronto in 1984, Gladwell spent a few years bouncing around the far-right fringe of the corporate media spectrum. He wrote for the American Spectator—notorious in the 1990s as the primary media organ promoting anti-Clinton conspiracy theories—as well as the Moonie-owned Insight on the News. From 1985-6, Gladwell served as assistant editor at the Ethics and Public Policy Center, which was created to bridge the gap between neoconservatives and Christian fundamentalists and help the two hostile factions to come together to counter a common enemy: activists fighting for economic justice. Rick Santorum was a fellow at EPPC until June 2011, when he left to concentrate on his attempt to secure the 2012 GOP presidential nomination. […]

At the New Yorker, Malcolm Gladwell developed another branch of his branded Malcolm Gladwell, Inc. business: as a highly-paid corporate speaker. Indeed, Gladwell is ranked as one of the highest-paid speakers in America today, commanding anywhere from $40,000 to $80,000 for a single talk to corporations and industry groups eager to pay for his soothing wisdom. In 2007, Fast Company estimated Gladwell does “roughly 25 speaking gigs a year, his current going rate some $40,000 per appearance.”

That would translate into roughly $1 million that year in speaking fees alone—four times what he made at the New Yorker in 2005. It’s a huge amount of money, as far as speaker’s salaries go. For comparison: Mitt Romney only made $500,000 in speaking fees in 2010.

Most news organization have specific rules and guidelines about speaking fees, and some—including the Wall Street Journal, Bloomberg, and the Washington Post—ban their journalists from taking fees for speeches. But the issue is far from settled, and regularly comes up in debates about journalistic ethics. Jonathan Salant, former president of the Society of Professional Journalists Washington chapter, considers corporate speaking fees to be outright bribes. He’s not the only one.

In a March 2012 article in the Columbia Journalism Review, Paul Starobin wondered if speaking fees are a “dark and an indelible stain on journalism” and noted that most journalists would not talk openly about the details of their corporate speaker side-gigs on the record and that some tried to prevent their names from being mentioned at all.

Full Story: Naked Capitalism: Malcolm Gladwell Unmasked: A Look Into the Life & Work of America’s Most Successful Propagandist

(via Innovation Patterns)

There’s an excellent conversation on MetaFilter. Here’s an interesting point from Mr.Know-it-some:

I stopped reading after “the notorious National Bureau of Economic Research, an organization with ties to the tobacco industry and bankrolled by the biggest names in right-wing corporate propaganda funding.” NBER is probably the preeminent economic research organization in the United States, if not the world, whose (approximately 1000) members include left-wingers like Joe Stiglitz and Paul Krugman. (Yes, you might argue that it leans a bit corporate, but calling it “notorious,” is simply ludicrous.)

(Though someone else on the thread points out that Paul Krugman actually did briefly work for Enron).

The thread hits all the points I would want to make about what’s good and bad about the piece. It’s clearly an example of the “hit piece” genre, but it does make good points.

Maias wrote:

What’s equally infuriating is that sometimes his arguments— and those of pharma— are correct. The case of ADHD drugs is one instance: some people are genuinely helped and their stories get drowned out in the cries of “drugging our kids” and “overmedication.” The idea that crack dealers or tobacco companies are solely responsible for addiction is genuinely problematic— it ignores the fact that people with addiction *do* tend to have underlying issues and the fact that humans have always sought consciousness alteration. Making this case does not mean you are a pharma or a tobacco shill, merely that you have read the literature and know something about drugs.

Ironically, it is exactly the type of journalism exhibited by both this piece and by Gladwell that is the problem: ignoring complexity leads to simplistic solutions (let’s just lock up the dealers! let’s ban ADHD meds! let’s prohibit cigarettes! let’s ban painkillers!) that don’t actually work.

And mediareport wrote:

There’s more than enough direct evidence of Gladwell distorting evidence and hiding conflicts of interest – and then responding by not directly responding to the criticisms – to make the critique stick and stick hard. Linking it to Gladwell’s early conservative training is an interesting approach, too.

The stuff about the pharmaceutical industry and Gladwell’s laughably wrong attempt at a defense of Enron execs seemed excellent and very much on point. That the intent of the piece was to savage Gladwell’s moronic brand is clear, but that doesn’t invalidate the accumulated information, which accomplishes the goal nicely.

(However, a few people on MeFi made the claim that S.H.A.M.E. implied that Gladwell was a white supremacist – they did not. S.H.A.M.E. wrote: “Gladwell, who is part-Jamaican, apparently didn’t mind working for a white supremacist who argued that people like Gladwell were inferior” (emphasis mine). That said, yes, mentioning Gladwell’s own work debunking the the thesis would have been charitable.

See Also:

The Tipping Point and the Long Tail debunked

Why, Unfortunately, Malcolm Gladwell Matters

Fructose Fogs the Brain New Study on Rats Suggests

A high intake of fructose impairs the cognitive abilities of rats by interfering with insulin signaling, but omega-3 fatty acids (n-3) reduces those negative effects effects according to a study from the Department of Integrative Biology and Physiology UCLA published in Journal of Physiology.

Although headlines today, including my own, emphasize the study’s findings regarding the impairing effects of high levels of fructose, the study also highlights the importance of n-3 acids, specifically DHA, to cognitive function. The authors of the study conclude: “In terms of public health, these results support the encouraging possibility that healthy diets can attenuate the action of unhealthy diets such that the right combination of foods is crucial for a healthy brain.”

The study, conducted by Rahul Agrawal1 and Fernando Gomez-Pinilla, consisted of four groups of six rats:

  • one group ate an n-3 deficient diet with a fructose solution
  • one group ate an n-3 deficient diet without a fructose solution
  • one group ate an n-3 sufficient diet with a fructose solution
  • one group ate an n-3 sufficient diet without a fructose solution

Each group was tested on a Barnes maze, a standard measure of spatial learning and memory in rodents. Prior to beginning their special diets all of the rats had been trained in the maze for a five days were found to be of equal cognitive condition.

The study found that an n-3 deficient diet hampered the rats’ performance on the maze, and that adding high fructose intake to an n-3 deficient diet made things substantially worse. The rats with an n-3 sufficient diet but a high level of fructose did significantly better than those with a n-3 deficient diet and a high level of fructose, but still did worse than those with a deficient n-3 level but no fructose. Here’s an illustration of the latency in completing the maze (lower is better):

Comparison of latency times in Barnes maze test

The study notes: “Although there was a preference towards fructose drinking in comparison to the food intake, no differences were observed in body weight and total caloric intake, thus suggesting that obesity is not a major contributor to altered memory functions in this model.”

Full Paper: The Journal of Physiology: ‘Metabolic syndrome’ in the brain: deficiency in omega-3 fatty acid exacerbates dysfunctions in insulin receptor signalling and cognition

This is a new study and has yet to be replicated, and so far its implications for human diets is unclear. “We’re not talking about naturally occurring fructose in fruits, which also contain important antioxidants,” Gomez-Pinilla said in a pres release. “We’re concerned about high-fructose corn syrup that is added to manufactured food products as a sweetener and preservative.”

Although studies have found positive benefits in taking DHA supplements (see Wikipedia for an overview), previous study by Nutritional Sciences Division at King’s College London on the DHA levels in vegans and vegetarians concluded that although those who don’t eat meat have significantly lower levels of DHA “There is no evidence of adverse effects on health or cognitive function with lower DHA intake in vegetarians.” However, there are now a number of algae based vegan DHA supplements.

Study: Moderate Jogging Increases Longevity

From a press release regarding an as of yet unpublished study conducted over the past 36 years:

Undertaking regular jogging increases the life expectancy of men by 6.2 years and women by 5.6 years, reveals the latest data from the Copenhagen City Heart study presented at the EuroPRevent2012 meeting.

Reviewing the evidence of whether jogging is healthy or hazardous, Peter Schnohr told delegates that the study’s most recent analysis (unpublished) shows that between one and two-and-a-half hours of jogging per week at a “slow or average” pace delivers optimum benefits for longevity. […]

The debate over jogging first kicked off in the 1970s when middle aged men took an interest in the past-time. “After a few men died while out on a run, various newspapers suggested that jogging might be too strenuous for ordinary middle aged people,” recalled Schnohr.

European Society of Cardiology: Regular jogging shows dramatic increase in life expectancy

The press release doesn’t talk about how the study controlled for other health factors. Do joggers live longer than swimmers or cyclists? Did the joggers and non-joggers have otherwise similar health habits (diet, tobacco, etc.)?

See also: How and Why Exercise Boosts Your Brain. Plus: How Little Exercise Can You Get By With?

Meta-Study Suggests Acupuncture No Better Than Placebo

I’ve linked before to research on the effectiveness of acupuncture for managing pain. But a recent meta-study published in PAIN suggests that real acupuncture is no more effective than “fake” acupuncture:

The authors observe that recent results from high-quality randomized controlled trials have shown that various forms of acupuncture, including so-called “sham acupuncture,” during which no needles actually penetrate the skin, are equally effective for chronic low back pain, and more effective than standard care. In these and other studies, the effects were attributed to such factors as therapist conviction, patient enthusiasm or the acupuncturist’s communication style. […]

In an accompanying commentary, Harriet Hall, MD, states her position forcefully: “Importantly, when a treatment is truly effective, studies tend to produce more convincing results as time passes and the weight of evidence accumulates. When a treatment is extensively studied for decades and the evidence continues to be inconsistent, it becomes more and more likely that the treatment is not truly effective. This appears to be the case for acupuncture. In fact, taken as a whole, the published (and scientifically rigorous) evidence leads to the conclusion that acupuncture is no more effective than placebo

ScienceDaily: Acupuncture for Pain No Better Than Placebo — And Not Without Harm, Study Finds

The story also mentions harmful side affects from acupuncture malpractice (though malpractice is a risk in just about any professional service).

Is Punning a Disease?

Last year author Douglas Coupland predicted that within the next 10 years: “We will still be annoyed by people who pun, but we will be able to show them mercy because punning will be revealed to be some sort of connectopathic glitch: The punner, like someone with Tourette’s, has no medical ability not to pun.”

Turns out some researchers already think “bad humor,” including excessive punning, is a disease. MSNBC reports:

Witzelsucht (the Germans just have the best words for everything, don’t they?) is a brain dysfunction that causes all sorts of compulsive silliness: bad jokes, corny puns, wacky behavior. It’s also sometimes called the “joking disease,” and as Taiwanese researchers phrased it in a 2005 report, it’s a “tendency to tell inappropriate and poor jokes.” We’ve covered all sorts of strange disorders of the mind in earlier Body Odd posts: one disorder makes you believe your loved ones are strangers, another convinces you that your hand has taken on a life of its own. Now, we give you a brain disorder that actually causes a poor sense of humor.

MSNBC: No pun intended: ‘Joking disease’ is no joke

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