Radon
Toxins · Radioactive gas
Critical exposure concern
Bottom line
Read Off Label rates Radon a CRITICAL exposure concern (8.5/10) based on very strong evidence of very high harm magnitude and moderate average exposure prevalence.
US EPA guidance recommends at least one home radon test; regional variation is enormous (parts of Iowa, PA, Colorado have wide areas above 4 pCi/L).
This entry describes an exposure rather than an added intervention.
What the evidence says
US EPA guidance recommends at least one home radon test; regional variation is enormous (parts of Iowa, PA, Colorado have wide areas above 4 pCi/L). Winter testing more reliable (houses sealed). Mitigation is straightforward and highly effective. Smokers in radon-exposed homes face multiplicative (not additive) risk.
Mechanism
Colorless, odorless alpha-emitting gas from uranium decay in soil/rock; seeps into basements and lower floors; 2nd leading cause of lung cancer after smoking (especially in never-smokers); huge regional variation
Reported exposure / mitigation context
Home test kits $15-30; mitigation (sub-slab depressurization) ~$800-2000
Citations
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Common questions
- How harmful is Radon?
- Radon is rated CRITICAL exposure concern (8.5/10) on the Read Off Label scale, derived from very strong evidence of very high harm magnitude and moderate average exposure prevalence.
- How does Radon cause harm?
- Colorless, odorless alpha-emitting gas from uranium decay in soil/rock; seeps into basements and lower floors; 2nd leading cause of lung cancer after smoking (especially in never-smokers); huge regional variation
- What exposure context is reported for Radon?
- US EPA guidance recommends at least one home radon test; regional variation is enormous (parts of Iowa, PA, Colorado have wide areas above 4 pCi/L).
This is an independent synthesis of published research by a non-clinician. Scores are opinions supported by citations, not prescriptions. See the full disclaimer and methodology for how this score was produced and what it does and doesn't mean.