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National Agricultural Health Study featured in 2026 Cancer in Iowa report

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River to River, hosted by Ben Kieffer

The Cancer in Iowa Report published annually by the Iowa Cancer Registry gives an overview of the current burden of cancer in the state. This year's report features findings from the Agricultural Health Study, one of the world's largest and longest-running active studies of agricultural exposures and health. On this episode we talk with Iowa Cancer Registry Director Mary Charlton about this year's report which estimates this year that 21,700 Iowans will be diagnosed with cancer and 6,400 Iowans will die of cancer.

We'll also talk with principal investigator of the Agricultural Health Study Laura Beane Freeman about the findings from their study that began in the mid-1990s with participants from Iowa and North Carolina. Iowa farmers and their spouses in the study have had between 10-13% fewer cancers overall than expected compared to the general Iowa population after adjusting for age and sex. David Cwiertny of the University of Iowa's Center for Health Effects of Environmental Contamination also joins to discuss various environmental factors in the state that may be contributing to cancer diagnoses.

Guests:

  • Mary Charlton, director and principal investigator, Iowa Cancer Registry
  • Laura Beane Freeman, principal investigator, Agricultural Health Study, National Cancer Institute
  • David Cwiertny, UI civil and environmental engineering professor and director, Center for Health Effects of Environmental Contamination
Ben Kieffer is the host of "River to River." Since 2007, Kieffer has interviewed, conversed with, and shared ideas from guests of all backgrounds and locations, and has helped listeners better understand, appreciate, and explore their state and the world around them. Kieffer has a bachelor's degree from the University of Iowa.
Samantha McIntosh is an award-winning talk show producer for Iowa Public Radio. She holds a bachelor's degree from St. Cloud State University. Since 2022, McIntosh has worked with IPR's talk team to bring news and features to IPR's listening audience.