Are you one of the 10 percent of Americans who report being allergic to penicillin? Did you know that less than 1 percent of the population are truly allergic? Did you know that 80 percent of people with true IgE-mediated penicillin allergy lose their sensitivity after ten years? Did you realize… read more "Penicillin Allergy?"
TB can’t be diagnosed with a blood test. Tuberculosis has been infecting humans since prehistoric times. It’s still with us. It usually can be cured today with good medical care but is still a serious problem in much of the world, especially among underprivileged socioeconomic groups and some ethnic populations.… read more "TB Or Not TB? Don’t Rely on a Blood Test"
Liquid biopsies can be used to reduce the amount of chemotherapy used for patients with stage II colon cancer. When a patient has cancer, cell-free tumor DNA circulates in the blood and can be detected in a peripheral blood sample. This is known as a “liquid biopsy,” and it has… read more "The Role of Liquid Biopsies in Oncology"
When I first started looking into chiropractic, I read about one of their continuing medical education (CME) offerings. CME for physicians is intended to update their knowledge so they can treat patients more effectively. This chiropractic CME course didn’t try to inform chiropractors about new knowledge from recent studies (there… read more "Medical Tests to Avoid"
Uncertainty is uncomfortable. It is only natural to want certainty. It is more comfortable to be certain and wrong than to be uncertain. Like anyone else, I would like to be comfortable, but I think truth matters. I’d rather be uncertain than wrong; wouldn’t you? As Voltaire said, “Uncertainty is… read more "Living with Uncertainty"
The standard textbook used in many schools of osteopathic medicine includes a lamentable chapter on cranial manipulation. It is clearly biased and fails to meet the minimal standards of science-based medicine. Craniosacral manipulation therapy is bogus, and it should no longer be taught to DOs or feature on their exams.… read more "Craniosacral Therapy Is Bogus but DOs Are Required to Learn It"
The FM/a test is advertised as a definitive test to diagnose fibromyalgia. It isn’t definitive. It is expensive. It has not been shown to change patient outcomes. I was surprised to learn that there is a blood test to diagnose fibromyalgia, the FM/a test. Is it accurate? Is it useful?… read more "A Blood Test for Fibromyalgia?"
If your Covid-19 test was negative, can you breathe a sigh of relief? What if it’s a false negative? If it was positive, is that reliable evidence of infection or might it be a false positive result? How trustworthy are these tests? As with so much in science, the answer… read more "Covid-19 Tests: Can You Trust the Results?"
There appeared to be an epidemic of melanoma skin cancer, but it seems to be a pseudoepidemic caused by overdiagnosis. Screening everyone with skin exams does more harm than good and can no longer be recommended. This lesion was suspicious enough to warrant a biopsy, but screening everyone for skin… read more "Melanoma: A Pseudoepidemic of Skin Cancer Prompts New Screening Recommendations"
There’s considerable evidence that the standard procedure for urine specimens, with cleansing and mid-stream collection, may not be necessary. Is it time to change? In November 2020, I reviewed Paul Offit’s book about when doctors refuse to believe evidence. I have just become aware of another example. The evidence for diagnosing urinary… read more "Is Midstream Urine Collection Necessary?"