Thermography: Worse than useless

Earlier this spring, I described the Choosing Wisely campaign in the United States, an initiative designed to redirect resources away from medical treatments that are useless or harmful. In the spirit of the campaign, I suggested Five Things Pharmacists and Patients Should Question. My list included unvalidated IgG food intolerance blood tests like Hemocode, dubious “Body Chemistry Balancing”, inaccurate heel ultrasound bone density testing, and saliva hormone testing. I also singled out breast thermography as a particularly questionable test that pharmacies offer. Cancer tumours need a rich blood flow to grow, so cancer cells secrete chemicals to stimulate the development of new blood vessels. More blood flow means warmer tissue. Thermography, sometimes called digital infrared thermal imaging (DITI) uses infrared measurement to detect skin temperature differences. Thermography has emerged as an alternative therapy offered by naturopaths, homeopaths, and some health professionals, like pharmacists. Note the claims made: Continue reading