Health risks from exposure to radon in homes
The adverse health effects of exposure to radon are caused primarily by damage due to alpha-particles. The main health hazard from radon exposure is an increased risk of lung cancer. Epidemiological studies showed that the exposure-response relation seems to be linear without evidence of a threshold. It is estimated that about 5% of the lung cancer deaths per year are attributable to radon in homes.
Measures for the Protection From Elevated Radon Concentrations in Buildings
It is reasonable to refurbish buildings with a radon exposure above an annual mean value of 100 Bq/m3 compartment air. Such values are mainly measured in areas/regions with high natural radon concentration in the soil. Persons staying in rooms with enhanced radon contents in the air over years, have a higher risk of contracting lung cancer. It is often sufficient to take small measures to reduce the radon concentration.
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