Researchers analyzed 727 counties across 14 states, cross referencing childhood cancer incidence data with estimated county level residential radon concentrations. Counties at or above 2 picocuries per liter showed an 8 percent higher childhood leukemia risk compared with counties below that level. The findings add to a growing evidence base that radon exposure in childhood is biologically meaningful at concentrations well below the EPA action level.
Study· Pediatric
Domestic Radon Exposure and Childhood Cancer Risk by Site and Sex in 727 Counties in the United States, 2001 to 2018
Counties with estimated average radon concentrations at or above 2 pCi/L showed an 8 percent higher childhood leukemia risk compared with counties below that level.