Candidates from both parties in Iowa's upcoming midterm elections are pledging to address a health crisis characterized by some of the highest and fastest-rising cancer rates in the U.S. Iowa currently ranks as the second-highest in the US for cancer rates.
While the issue was historically a political taboo to avoid criticizing the powerful agricultural industry, it has transitioned into a central campaign issue. Candidates disagree on whether these rates are caused by industrial agricultural practices—such as nitrate pollution from fertilizers and animal waste—or by non-agricultural factors like radon, tobacco, and alcohol.