EMF-induced cataracts.) Were there any biophysical factors -the size or shape of the test species, for
example- that require consideration in relating the animal tests to human beings? Based on these and
other similar factors, and with knowledge of the particular EMF levels that will occur in the
environment, the agency is in a reasonable position to fix the risk aspect of its risk/benefit analysis.
The risk-evaluation approach to the regulation of nonthermal environmental EMF was followed
in the 1970s, connection with its regulation of emission levels of microwave ovens. BRH set the
allowable leakage levels of new ovens at 1000 µW/cm2 (69). The approach was subsequently followed
in 1977 by the California Energy Commission (70), and in 1978 by the New York Public Service
Commission (71); in both cases rules were drawn to protect the public from exposure to power-
frequency fields from high-voltage power lines.
Summary
Man-made EMFs are present in the environment at levels shown by experiment to be capable of
affecting biological function. It follows, therefore, that uncontrolled exposure to such EMFs is a potential public-
health risk. The regulatory response to the environmental EMF problem has been slow, and the nature of the
proof demanded has frequently been inappropriate.
References
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Population exposure to VHF and UHF broadcast radiation in
the United States
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