[COMMENT: Studies like this are an embarrassment to science. They test 3 physiological parameters and assume because nothing changed with those 3, that EHS isn't physiological. Yet, they completely ignored and failed to look at the many documented physiological changes in EHS. So if I hit 3 strikes out of 100, I've never missed? This isn't objective science; iit's complete "junk science" manipulated to a preconceived outcome.]
Origins of electromagnetic hypersensitivity to 60 Hz magnetic fields: A provocation study.
Kim DW, Choi JL, Nam KC, Yang DI, Kwon MK.
Bioelectromagnetics. 2011 Oct 19. doi: 10.1002/bem.20711. [Epub ahead of print]
Source
Department of Medical Engineering, Yonsei University College of Medicine, Seoul, Korea; Graduate Program in Biomedical Engineering, Yonsei University, Seoul, Korea; Brain Korea 21 Project for Medical Science, Yonsei University, Seoul, Korea. kdw@yuhs.ac.
Source
Department of Medical Engineering, Yonsei University College of Medicine, Seoul, Korea; Graduate Program in Biomedical Engineering, Yonsei University, Seoul, Korea; Brain Korea 21 Project for Medical Science, Yonsei University, Seoul, Korea. kdw@yuhs.ac.
Abstract
With increasing electrical device usage, social concerns about the possible effects of 60 Hz electromagnetic fields on human health have increased. The number of people with self-attributed electromagnetic hypersensitivity (EHS) who complain of various subjective symptoms such as headache and insomnia has also increased. However, it is unclear whether EHS results from physiological or other origins. In this double-blinded study, we simultaneously investigated physiological changes (heart rate, respiration rate, and heart rate variability), subjective symptoms, and perception of the magnetic field to assess origins of the subjective symptoms. Two volunteer groups of 15 self-reported EHS and 16 non-EHS individuals were tested with exposure to sham and real (60 Hz, 12.5 µT) magnetic fields for 30 min. Magnetic field exposure did not have any effects on physiological parameters or eight subjective symptoms in either group. There was also no evidence that the EHS group perceived the magnetic field better than the non-EHS group. In conclusion, the subjective symptoms did not result from the 60 Hz, 12.5 µT magnetic field exposures but from other non-physiological factors.
PMID: 22012875 [PubMed - as supplied by publisher]
