Amie here. Our cancer series is personal to all of us. But this week’s cancer story is especially personal for me.
Longtime subscribers know I lost my mom to lung cancer in 2017, and doctors suspected (because she didn’t have a history of smoking tobacco) that it was radon-related.
This weekend, I chatted with my dad about it, and learned something I didn’t know: When they built their home in Blue Grass after my brother and I moved out, they had the builder install radon-resistant mitigation—something that some cities and counties (and the Meskwaki) now require in new construction, and something that’s also being pushed on the state level. (Blue Grass straddles two counties—one that requires this, and one that doesn’t.)
That means it probably wasn’t that house that caused it, but Mom lived in a few houses before then—and radon mitigation techniques are only now becoming crucial.
This week on The Hot Spot: Investigating Cancer in Iowa, I dive into radon, the invisible soil gas that comes from decaying uranium—which Iowa has in its soil in greater amounts than any other state in the nation—and what you can do to find out, and prevent, that radiation from causing cancer.
Read my story below.
If this was forwarded to you, subscribe to the rest of our Cancer in Iowa series here, and share your cancer story with us here.
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The cancer risk hiding in most Iowa homes
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Left: Sara Geiken with her daughter, Paige. Right: AnMarie Rodgers of Oakland, California (formerly of Newton), with her mother. (Graphic by Iowa Starting Line)
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By Amie Rivers
Rosemary Geiken didn’t know what radon was, let alone the dangers of it, when she was raising her children in Tripoli, Kesley, and Dumont in Northeast Iowa. So she never thought to test for it, either.
”Growing up, no, we never tested,” Geiken, who now lives in Urbandale, said. “It wasn’t a thing.”
The same thing happened to AnMarie Rodgers, a native of Newton who was surprised to be diagnosed with lung cancer in 2024.
Neither Rodgers nor Geiken’s daughter, Sara, had a history of smoking. Both were told by doctors that radon—an invisible gas caused by the decomposition of radium-226, found in high concentration in the soil across Iowa—was the likely cause behind their lung cancer.
”I don’t think it was that widely known,” Rodgers, now living in Oakland, California, said.
Sara Geiken died in 2024 at the age of 44—one of 400 Iowans estimated to die every year from radon-induced lung cancer. Yet the dangers of radon are only just becoming known.
“[Doctors] said, ‘Have you lived somewhere where it’s high in radon?’” Geiken said. “ We hadn’t even heard of radon.”
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Sara Geiken, right, with her daughter, Paige. (Courtesy of Rosemary Geiken)
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AnMarie Rodgers, left, and her mother. (Courtesy of AnMarie Rodgers)
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The risks
When AnMarie Rodgers was a child, she developed asthma and allergies so badly that her parents moved the family to a new house in Newton when she was in ninth grade. Her father, an engineer who died in 2001, made sure the home’s indoor air would help alleviate his daughter’s respiratory ailments.
“ So from then on we had a really good air purifier system in the house,” Rodgers said. “But it also meant that it was really well sealed up.”
A test she did in her childhood home after her 2024 diagnosis revealed radon gas—which her father never thought to test for—built up in that sealed home. Rodgers believes it caused her lung cancer.
“ I think if he’d have known it was a risk … I think he would’ve been able to fix it himself,” Rodgers said. “It just wasn’t done.”
Losing his own father to lung cancer in 2009 drives Kyle Hoylman in his work as CEO at Protect Environmental, the largest radon contractor in the nation.
When he tested his childhood home in Kentucky, where his dad lived, Hoylman found it contained 30 picocuries of radon per liter (pCi/L)—far over the EPA’s threshold of 4 pCi/L. (The EPA notes there is “no safe level of radon.”)
“ These things start to come off of the soil through pathways into the home,” Hoylman said, like gaps and cracks in your basement or construction materials. “ You and I are breathing it, [and the] radon particle gets trapped in our lung.”
And he knows Iowa’s at an even higher risk.
“You are at the epicenter of radon for the United States—60% of your buildings tested have radon concentrations above the EPA action level,” Hoylman said. “To put that into perspective, at 4 picocuries, that’s a radiation dose equivalent of 200 annual chest x-rays, or half a pack of cigarettes a day.”
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What can be done
You can’t tell the story of radon in Iowa without Gail Orcutt.
Just two years after she retired as an Iowa school teacher, Orcutt was diagnosed in 2010 with radon-caused lung cancer. The Altoona woman immediately threw herself into teaching others about radon’s dangers until her death in 2020.
Not long after her death, Iowa passed the Gail Orcutt School Radon Safety Bill, which requires radon testing (and mitigation if necessary) in all public schools at least once every five years. Iowa also requires child care centers to test for radon every two years and mitigate if levels above 4 pCi/L are found.
Yet we have no requirements for testing or mitigation in homes, something Hoylman recommends.
“ In Iowa, you take these new homes—12,000 of them last year—60% of those have a radon problem,” he said. “ The industry doesn’t fix 7,000 homes every year in Iowa. We’re going backwards, not forwards, in reducing the occupant risk to radon.”
That could change soon.
Several cities and counties, and the Meskwaki Tribe, now require Radon Resistant New Construction (RRNC), a method of preventing radon gas while building instead of after. It’s something Hoylman said can start to solve the problem.
“ We have to draw a line in the sand and say, from this point forward, any new home, any new building, school, whatever it is, must have a passive soil gas control system installed,” he said.
State Rep. Hans Wilz, a Republican from Ottumwa, introduced a bill this spring that would require home builders across Iowa to install such systems in new homes. It would also set up state tax credits of up to $1,000 for Iowans to install mitigation systems in existing homes and buildings.
“Seven out of 10 homes in Iowa have radon levels that pose a health risk,” Wilz told Radio Iowa, noting mitigation would save hundreds of millions of dollars in health care costs.
The bill passed the Iowa House, but didn’t get a vote in the Senate, though no lobbyists registered against it. The Legislative Services Agency estimates the bill would have cost the state around $3 million in the first year.
Wilz told Iowa Starting Line he did plan to bring this bill “and/or a similar bill” back to the Iowa House in 2026.
Anyone can purchase a short-term or long-term radon test kit from local hardware or big-box stores; they can run from $15 up to $120 or more for continuous radon monitoring.
Rosemary Geiken tested her own apartment in Urbandale after her daughter’s death, and found her reading was at 18 pCi/L—more than four times the EPA’s limit.
She said her building manager and owners “ did a fantastic job” of immediately correcting the problem. But Geiken had to educate the manager at first, too: “ She had no clue what radon even was.”
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