Microwave Radiation and Its Effect on Response to X-radiation
R. A. E. Thomson, M.T., Sol M. Michaelson, D.V.M., and Joe W. Howland, M.D. · 1967
Early research showed microwave radiation could alter how dogs responded to X-rays, suggesting EMF interactions amplify biological damage.
Plain English Summary
This 1967 study examined how microwave radiation affects dogs' response to X-ray radiation, focusing on survival rates and white blood cell changes when animals were exposed to both types of radiation together. The research investigated whether microwave exposure made X-radiation more lethal or altered immune system responses. This represents early scientific recognition that different types of electromagnetic radiation might interact in harmful ways.
Why This Matters
This study represents a crucial early investigation into what scientists call 'combined exposure effects' - the possibility that microwave radiation might amplify damage from other sources like medical X-rays. The research is particularly significant because it examined lethality and immune system impacts (leukocyte changes) in a mammalian model, providing insights more relevant to human health than cell culture studies. What makes this 1967 work remarkable is its prescient focus on interaction effects, decades before most researchers considered how our daily microwave exposures from wireless devices might interact with medical radiation or other environmental stressors. The science demonstrates that electromagnetic fields don't operate in isolation - they can potentially modify how our bodies respond to other challenges, making seemingly 'safe' individual exposures more problematic when combined.
Figures from the Original Paper
Diagrams extracted from the original research document.
Exposure Information
Specific exposure levels were not quantified in this study. Duration: 6 hours
Study Details
To determine the effect of simultaneous microwave and X-irradiation at a lethal X-ray dose level. The response to X-irradiation after numerous exposures to microwaves was also investigated.
Male and female dogs, of mixed breeds, one to five years of age, were exposed individually in a Plex...
Lethality from 1656 R whole body X-irradiation was 30 per cent in normal dogs, 70 per cent in dogs X...
It is apparent from Table I that microwave treatment can increase the lethal effects of X-irradiation. This is very evident following combined microwave and X-irradiation. The increase in body temperature immediately following combined microwave and X-irradiation results from heating of the animal by microwaves (Figure 3). Absorption of microwave energy in tissue results in the heating of the medium. Hurley and Joslin found enhancement of X-radiation effects when heating and X-irradiation of mice was administered simultaneously. Such a response has been hypothesized by Selawry, et al. in a review of the combined effect of heat and ionizing radiation. The increased lethality in animals that received X-irradiation nine months after microwave exposure suggests that the microwave treatment caused a change in the animals that made them respond differently from normal animals. Differences in response between microwave treated and normal animals following ionizing radiation have been observed. In such studies lethality was less in microwave treated than in normal animals. When the lethality response in this study is examined closely, it is evident that of the microwave treated animals only those with the least number of consecutive microwave exposures, in accumulating 90 hours of exposure, survived X-irradiation (Figure 4). The exposures ranged from a single exposure up to a maximum of five consecutive exposures. The relation of each type of exposure (single, two consecutive, etc.) to the total number given, is expressed as per cent of the total microwave exposure. Fewer consecutive exposures comprised the microwave exposure groupings for animals that survived 21 to 25 days, than for the animals that died.
Show BibTeX
@article{microwave_radiation_and_its_effect_on_response_to_x_radiation_g5708,
author = {R. A. E. Thomson and M.T. and Sol M. Michaelson and D.V.M. and and Joe W. Howland and M.D.},
title = {Microwave Radiation and Its Effect on Response to X-radiation},
year = {1967},
}