
Occupational Exposure to Heat or Noise and Reduced Fertility
Donna Day Baird, PhD
National Institute of Environmental Health Sciences Research Triangle Park, NC
JAMA. 1985;253(18):2643-2644.
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To the Editor.—
The statements of the American Medical Association Council on Scientific Affairs that occupational exposures to heat or noise have not been reported to be associated with adverse effects on reproductive function1 do not reflect all the available epidemiologic data. Not only are there substantial published data supporting the relationship between non-occupational heat exposure and adverse effects on semen quality as cited by Levine,2 but occupational heat exposure has also been associated with adverse fertility effects. Rachootin and Olsen3 compared Danish males examined or treated for infertility with controls who had conceived a healthy baby within a year. They found a significantly elevated odds ratio of occupational exposure to heat among men with sperm abnormalities compared with control men (odds ratio [OR], 1.9; 95% confidence internal [CI], 1.2 to 2.8). Because the majority of couples who fail to conceive within a year do not seek
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