U of I Researchers Find Relationship Between Cancer in Adults and Children and Ag Chemicals
June 21, 2022
MOSCOW, Idaho — June 21, 2022 – Researchers at the University of Idaho have found a correlation between agricultural chemicals and cancer in adults and children in Idaho, and throughout 11 Western states.
By analyzing federal and state health and agriculture data, Alan Kolok and Naveen Joseph of the Idaho Water Resources Research Institute, and colleagues at the Northern Arizona University, report a relationship between cancer incidence and pesticide applications in Idaho’s 44 counties, as well as 459 counties in the Western United States from Montana south to New Mexico and west to the coast.
In “Assessment of Pediatric Cancer and its Relationship to Environmental Contaminants: An Ecological Study in Idaho,” published in March in the peer-reviewed GeoHealth, and “Investigation of Relationships Between the Geospatial Distribution of Cancer Incidence and Estimated Pesticide Use in the U.S. West,” also in GeoHealth, Kolok, Joseph and peers in Arizona found that agricultural pesticides – primarily fumigants – were associated with cancer among adults and children in the Western U.S.
The most predominant fumigant, metam, was also found to be associated with cancer among adults in Idaho and in the other states. Metam-sodium is an agricultural pesticide used primarily to control weeds, weed seeds, fungi, nematodes and soil insects.
“We saw a significant relationship,” Kolok said. “It tells us something that we need to explore further.”
Kolok and Joseph found the incidence of cancer was more closely associated with fumigants used in Western states that produce food such as vegetables and fruit, as opposed to states that used mostly herbicides in the production of grains such as corn and wheat.
“We have not seen it expressed in a fumigant like this before, and it’s absolutely striking,” Joseph said.
Researchers compared data on the top 125 pesticides and herbicides from the U.S. Geological Survey Pesticide National Synthesis Project database with data on cancer incidence among adults and children from the National Cancer Institute’s State Cancer Profiles and the Cancer Data Registry of Idaho.
Professor and Director of
Idaho Water Resources Research Institute
About the University of Idaho
The University of Idaho, home of the Vandals, is Idaho’s land-grant, national research university. From its residential campus in Moscow, U of I serves the state of Idaho through educational centers in Boise, Coeur d’Alene and Idaho Falls, nine research and Extension centers, plus Extension offices in 42 counties. Home to nearly 11,000 students statewide, U of I is a leader in student-centered learning and excels at interdisciplinary research, service to businesses and communities, and in advancing diversity, citizenship and global outreach. U of I competes in the Big Sky and Western Athletic conferences. Learn more at uidaho.edu.