Subtle Consequences of Exposure to Weak Microwave Fields: Are There Non-Thermal Effects?
UNIVERSITY HOSPITAL SEATTLE WA BIOELECTROMAGNETICS RESEARCH LAB
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When we speak of subtle consequences of exposure we mean only that the effects were observed in the absence of changes in core temperature due to microwave exposure. When we measure delta T degree C in core temperature consequent to microwave exposure, we are witnessing a breakdown of thermoregulatory mechanisms. Short of this event, the exposed subject makes a number of thermoregulatory and metabolic accommodations to maintain a constant body temperature and to deal effectively with the energy being deposited in its tissues. These latter changes should interest us for they are the subtle consequences exposure to weak microwave fields. The long-term accommodations, which accompany subchronic exposure, can lead to a number of interesting effects some of which are described below. Two fundamentally different types of experimental protocol were employed. In Experiment IA, independent groups of male rats were either exposed or sham-exposed to 915 MHz microwaves for 10 hrnight for up to 4 mo. In Experiment IB, independent groups of rats were similarly exposed, or sham-exposed, to 2450-MHz microwaves for 10 hrnight for 4 mo. In Experiment II, using a different type of protocol, pregnant female rats were exposed for 20 hrday for 19 days of gestation. Control groups were either sham-exposed or served as caged controls. The main focus of the study attended to assessment of various functions and the developmental status of the gravid rats progeny.
- Anatomy and Physiology