My approach is to think carefully about exactly what I want to know, word the question that way, then throw it to the AI and pray. I think this is better than ignoring it or spending too much time on it.

Question: Where does radon related mortality rank versus other mortality factors in the United States?

<AI "reasons" a bit>

...

Summary: Radon in perspective

Category / Cause Approx. Deaths per Year (U.S.) Rank / Context

Heart disease ~680,000 #1 overall cause of death

Cancer (all causes) ~613,000 #2 overall cause

Chronic lower respiratory disease ~145,000 #5 overall (includes COPD, etc.)

Lung cancer due to radon ~20,000–21,000

Subset of cancer deaths; about 3–4%

Toxic agents (inc. radon, pollutants) ~55,000 ~2.3% of all deaths (includes radon part)

So AI says it's a bit less than 1% of preventable deaths (or something) annually. Probably puts it in the top 150 causes or so. What you want to do with that hypothesis, or whether you want to spend time sanity checking it, is up to you. Hitting the gym to avoid heart disease is like 35 times more important. A radon home testing kit to eliminate uncertainty about this particular <1% risk is a one time cheap thing though.