Chicago, Cleveland, Detroit, and Milwaukee—may face elevated health risks from being exposed to dioxin, PCBs, ...

Great Lakes | Danger Zones? | By Sheila Kaplan

Here’s the report that top officials of the Centers for Disease Control and Prevention thought was too hot for the public to handle—and the story behind it.

For more than seven months, the nation’s top public health agency has blocked the publication of an exhaustive federal study of environmental hazards in the eight Great Lakes states, reportedly because it contains such potentially “alarming information” as evidence of elevated infant mortality and cancer rates.

The 400-plus-page study, Public Health Implications of Hazardous Substances in the Twenty-Six U.S. Great Lakes Areas of Concern, was undertaken by a division of the Centers for Disease Control and Prevention at the request of the International Joint Commission, an independent bilateral organization that advises the U.S. and Canadian governments on the use and quality of boundary waters between the two countries. The study was originally scheduled for release in July 2007 by the IJC and the CDC’s Agency for Toxic Substances and Disease Registry (ATSDR).

The Center for Public Integrity has obtained the study, which warns that more than nine million people who live in the more than two dozen “areas of concern”—including such major metropolitan areas as Chicago, Cleveland, Detroit, and Milwaukee—may face elevated health risks from being exposed to dioxin, PCBs, pesticides, lead, mercury, or six other hazardous pollutants.

In many of the geographic areas studied, researchers found low birth weights, elevated rates of infant mortality and premature births, and elevated death rates from breast cancer, colon cancer, and lung cancer. ...