Cancer rates are declining across most of the United States. But Iowa is moving in the opposite direction. Iowa now has one of the nation’s highest cancer incidence rates and is one of only three states where rates continue to rise. So what’s different about Iowa? Nick El Hajj, reporter for the Des Moines Register, joins The Excerpt to discuss the theories researchers are investigating, from drinking water and nitrate pollution to radon exposure and other environmental factors. He also shares the stories of Iowa families searching for answers.
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