I’ll be speaking in Portland, Oregon on May 17th. Details here.
A correspondent asked me to look into the GAPS diet. I did. I was sorry: it was a painful experience. What a mishmash of half-truths, pseudoscience, imagination, and untested claims!
GAPS stands for Gut and Psychology Syndrome. It is the invention of Dr. Natasha Campbell-McBride. According to her, a wide variety of health problems can be traced to a single cause: an imbalance of gut microbes. She cites ancient wisdom: Hippocrates said all diseases begin in the gut. She says science confirmed that wisdom when it discovered that 90% of all cells and all genetic material in the human body belongs to the gut flora. She says the modern world poses many dangers for the gut flora, and once it is damaged, the health of the whole body enters a downward slide towards disease. She claims that autism and ADD, OCD, schizophrenia, epilepsy, depression, and numerous other ailments are all digestive disorders. (more…)
In his first book, On Being Certain: Believing You Are Right Even When You’re Wrong, neurologist Robert Burton showed that our certainty that we are right has nothing to do with how right we are. He explained how brain mechanisms can make us feel even more confident about false beliefs than about true ones. Now, in a new book, A Skeptic’s Guide to the Mind: What Neuroscience Can and Cannot Tell Us About Ourselves, he investigates the larger question of how a brain creates a mind. There is no alternative to the scientific method for studying the physical world, but Burton thinks there are essential limitations to science’s ability to investigate conundrums like consciousness and free will. Brain scientists fall into error because:
…our brains possess involuntary mechanisms that make unbiased thought impossible yet create the illusion that we are rational creatures capable of fully understanding the mind created by these same mechanisms.
He has a bone to pick with neuroscientists. They are discovering fascinating information, but their interpretations often go beyond what the data can really tell us. They often draw questionable conclusions from imaging studies that could have other explanations. (more…)
Some people would like to manage their own health care without having to depend on a doctor. They consult Google, diagnose themselves, and treat themselves. The Do-It-Yourself trend in lab tests continues apace. Without a doctor’s order, patients can get legitimate and/or questionable lab tests directly from various companies such as Any Lab Test Now and Doctor’s Data (which has sued Stephen Barrett for exposing their fraudulent “urine toxic metals” test on Quackwatch). Now a new company, Talking20, has jumped on the self-testing bandwagon with an innovative product that allows people to prick their finger, put a drop of blood on a card, and mail it in from anywhere in the world. Multiple tests are done on a single drop of blood. Results will be available online within a week or even sooner.
In the past I have criticized evolutionary medicine for its tendency to rely on unverifiable “Just-So Stories,” but a new book has helped me appreciate what the best kind of evolutionary thinking can contribute to our understanding of medicine. Doves, Diplomats, and Diabetes: A Darwinian Interpretation of Type 2 Diabetes and Related Disorders by Milind Watve investigates diabetes from an evolutionary perspective, suggesting how it might have originated, why it persisted, and how it is related to survival advantages. Watve develops well-reasoned hypotheses that can be tested by examining their expected consequences. He believes it is impossible to understand metabolism without understanding behavioral ecology, and he makes a good case.
A reassessment of the evidence concerning Type II diabetes (T2D) reveals a number of paradoxes. Elevated blood glucose is the defining feature of T2D but controlling it doesn’t prevent all the complications of diabetes, and it doesn’t appear that elevated blood sugar could produce all the pathological changes of diabetes. Insulin resistance is believed to be central to a cluster of deadly diseases in humans, but in other animals it has no adverse effects on health and even increases lifespan. Studying diabetes from an evolutionary perspective can shed light on such paradoxes. (more…)
I write about a lot of depressing subjects, and sometimes a change of pace is welcome. Mary Roach, billed as “America’s funniest science writer,” has followed up on her earlier explorations of cadavers (Stiff), sex (Bonk), the afterlife (Spook), and survival on spaceships (Packing for Mars) with a new book entitled Gulp: Adventures on the Alimentary Canal.
Forget all that mythology about diet, detoxification, and 10-year-old hamburger accretions in the bowel. The reality of human digestive physiology is far more interesting and has the extra-added attraction of being true. And in Roach’s hands, often howlingly funny. She is a hands-on investigative reporter who is ready to try anything; among other adventures she inserts her entire arm in a cow’s stomach. Her highly entertaining odyssey takes her to Igloolik to eat narwhal skin, to a dog food tasting lab in Missouri, to Minnesota to observe a fecal transplant, and to strange and exotic outposts at the cutting edge of science, populated by colorful characters. (more…)
For many years I have been using Continuing Medical Education (CME) programs offered by the American Academy of Family Physicians (AAFP). The FP Essentials program consists of a monthly monograph with a post-test that can be submitted electronically for 5 hours of CME credit. Over a 9-year cycle, a complete family medicine curriculum is covered to prepare participants for the re-certification board exams. Some examples of typical subjects are skin cancer, hand and wrist injuries, valvular heart disease, and care of the newborn. I rely on these programs to learn, review, and keep up-to-date in my specialty. Imagine my dismay when I opened the latest package to find a monograph on Integrative Medicine.
First it was called various names like folk medicine, quackery, and unproven/untested treatments, then all of those (the less rational right along with the more rational) were lumped together under the umbrella term “Alternative Medicine,” then it became “Complementary and Alternative Medicine” (CAM), and now it has been re-branded as “Integrative Medicine.” The term is designed to make unscientific treatments seem more acceptable to science-based doctors. “Integrative Medicine” is a marketing term, not a meaningful scientific category. It is a euphemism for combining Complementary and Alternative Medicine (CAM) with mainstream medical practice, unproven with proven, magic with science. It has been critiqued many times on this blog. We have stressed that there is only one medicine, and that when a treatment is proven to work by good evidence, it is just “medicine.” When the evidence for a CAM treatment is not good, it essentially amounts to experimental treatments and/or comfort measures. Worse, sometimes CAM even persists in using treatments that have been proven not to work or that are totally implausible, like therapeutic touch or homeopathy. (more…)
Chronic Lyme disease almost certainly does not exist, but a growing number of doctors are diagnosing and treating it with long-term antibiotics and other remedies. They are known as LLMDs (“Lyme Literate” medical doctors). This subject has been covered repeatedly on Science-Based Medicine, here, here, here, here, and elsewhere.
I have a correspondent who joined a Yahoo group for Lyme disease (Northern VA Lyme). She shared with me a message to that group that listed the LLMDs in their area. On that list was Patricia Slusher, ND, CN (naturopath, certified nutritionist). Other messages confirmed that Slusher is treating patients for “chronic Lyme disease.” One message specifically described the treatments prescribed by Patricia Slusher:
For the first 3 weeks my Lyme protocol consist of taking 3 supplements from Percision [sic] Herbs, LLC; LYX, Spirex and Puricell and spending 30 minutes 2X a week getting a Quad Zapper treatment. After the 3 weeks, my test for Lyme was negative. But bartonella was still positive. She has changed my supplements to taking Drainage-tone and Amoeba-chord by energetix and 15 minutes 1x a week of the Quad Zapper to fight the bartonella. I have doing [sic] this protocol for approx. 3 weeks. Along with this protocol I am on several other homeopathic supplements to address some of my symptoms, swollen lymph nodes, nerve pain (feels like someone is stabbing me with an ice pick or bugs crawling on me), numbness, inflammation, low vitamin D, etc. Also, supplements to raise the functioning level of my adrenals and kidneys. [Note: the Quad Zapper is a version of one of the infamous (more…)
Daniel Amen loves SPECT scans (Single Photon Emission Computed Tomography). And well he should. They have brought him fame and fortune. They have rewarded him with a chain of Amen Clinics, a presence on PBS, lucrative speaking engagements, a $4.8 million mansion overlooking the Pacific Ocean, and a line of products including books, videos and diet supplements (“nutraceuticals”). He grossed $20 million last year. Amen is a psychiatrist who charges patients $3,500 to take pretty colored SPECT pictures of their brains as an aid to the diagnosis and treatment of conditions including brain trauma, attention-deficit hyperactivity disorder (ADHD), addictions, anxiety, depression, dementia, and obesity. He even does SPECT scans as a part of marriage counseling and for general brain health checkups.
SPECT imaging uses an injected radioisotope to measure blood flow in different areas of the brain. Amen is exposing patients to radiation and charging them big bucks because his personal experience has convinced him SPECT is useful. So far, he has failed to convince the rest of the scientific medical community.
Amen has just published an article in the journal Alternative Therapies entitled “It’s Time to Stop Flying Blind: How Not Looking at the Brain leads to Missed Diagnoses, Failed Treatments, and Dangerous Behaviors.” It amounts to poorly-reasoned apologetics with false analogies, testimonials, and pretty pictures that don’t prove what he thinks they prove. (more…)
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…)