IOWA CITY — Rising cancer rates have become a central issue in Iowa’s gubernatorial race as voters grapple with growing concerns about public health and environmental safety. According to recent research from the University of Iowa, the state ranks second nationally for cancer diagnosis rates, trailing only Kentucky. This trend has intensified public anxiety and drawn significant attention in the run-up to Tuesday’s midterm elections.

The sharp increase in cancer cases in Iowa contrasts with decreasing or stable rates across most other states. While experts have not pinpointed a definitive cause, environmental factors, particularly those linked to agricultural practices, have been identified as potential contributors. Fertilizer runoff, pesticides, and nitrate contamination from commercial farming and animal waste are believed to be affecting the state’s water supply, raising alarms among residents.

At public forums and campaign events, voters have candidly shared personal stories about cancer, making the issue a defining one in the closely contested race between Democrat Rob Sand, the state auditor, and Republican Zach Lahn, an investor and first-time candidate. Both contenders have pledged to address the crisis through enhanced funding for cancer research, environmental protections, and improved water quality measures.

Sand, who leads in recent polls, has emphasized the importance of restoring wetlands and creating a notification system to inform residents when nitrate levels in drinking water become unsafe. He argues that safeguarding Iowa’s rivers and parks is vital not only for public health but also for maintaining the state’s natural amenities and quality of life.

Lahn has focused on holding agricultural companies accountable for environmental damage and called for increased investment in cancer research. Speaking at a “Make Iowa Healthy Again” rally near Des Moines, he highlighted Iowa’s status as having the fastest growing cancer incidence in the country and pledged to improve food safety and water quality. He was joined at the event by Robert F. Kennedy Jr., the state's health and human services secretary.

The debate over the state's cancer rates also highlights deeper political and economic tensions. Agriculture, a dominant sector in Iowa’s economy, is frequently cited as both a key contributor to nitrate pollution and a powerful lobbying force. Mike Naig, Iowa’s Republican agriculture secretary, disputes that farming practices are primarily responsible for the health issues, warning against oversimplifying the complex causes behind rising cancer rates.

Environmental consultants and activists warn that political inertia has hindered progress. Mike Carberry, a local environmental consultant, criticized incumbent leadership for failing to confront “Big Ag” interests, suggesting that a lack of political will is preventing meaningful solutions.

In recent years, some communities along waterways such as the Raccoon River, which runs through Des Moines, have seen residents avoid recreational water activities due to fears of chemical contamination. Homeowners have invested in water filtration systems and radon detection kits amid concerns over carcinogens in their environment.

Ultimately, voters face a choice on whether new leadership will tackle Iowa’s cancer surge with concrete policies or if existing political divisions will continue to stall action. As Bill Crews, a former mayor and cancer survivor, reflected, many remain skeptical that either party will deliver substantive change despite promises made during the campaign.