Claim: 40% of the MN population are exposed to excessive radon in their homes.
Yet death from lung cancer attributed to anything other than smoking runs about 2%(?) of total mortality in the state.
Forty percent of the population highly exposed. Two percent die.
Something doesn’t square. Or I can’t add.
Actually, Minnesotans have a lower risk of death from cancer overall, when compared to other states (lunger cancer is 29%of total cancer with 85% of that total attributed to smoking tabacco). This is from the CDC:

But the interesting question isn’t about radon, or testing for radon, or installing a radon mitigation system, or all the subsequent industry that has sprung from radon concerns.
The interesting question is what social norms and investments make our health indexes better than average?