Overlooking evidence: media ignore environmental connections to breast cancer.

In this article, the author reviews seven years' worth of major news media coverage of the role of environmental pollutants in the etiology of breast cancer. The time frame was 2002-2008 and the outlets studied included prominent newspapers, national news magazines, and network television news programs. Noting that a growing body of private, university, and government environmental health research has implicated a variety of common chemicals and radiation in the disease, the author looked for quantity and quality of coverage of two scientific metastudies during the specified time frame: State of the Evidence: The Connection Between Breast Cancer and the Environment and Environmental Pollutants and Breast Cancer: Epidemiological Studies. She also examined reporting on breast cancer in the month of October ("National Breast Cancer Awareness Month") during the seven years. Despite recent scientific findings, the news media have downplayed and frequently overlooked the evidence. None of the outlets studied covered the State of the Evidence report, and only one covered the Environmental Pollutants report. Breast Cancer Awareness Month similarly saw few articles or newscasts about environmental connections. The author attributes the dearth of coverage to several factors: journalists' lack of awareness about environmental health science, the seemingly higher standards of proof for research findings that implicate chemicals in disease than for other types of scientific research, establishments' lack of acceptance of environmental theories of breast cancer, and economic pressures on news outlets not to alienate their advertisers.