That's more than fires, drownings and airplane crashes combined. How radon causes cancer Radon gas spontaneously decays into minute solid particles, which lodge in the lungs and emit radiation for over 20 years. Alpha radiation damages the DNA in living cells, causing cancerous and genetic mutations. The onset of carcinoma may take decades. The average person receives more effective radiation exposure from radon than from all other natural or man-made sources combined.
Children are particularly susceptible to radiation.
Public warnings are regularly issued about carcinogens at levels thousand times less lethal than the average radon level in American homes. Most lung cancer deaths from radon are preventable. The health risk is proportional to the concentration of radon. Modern air-tight homes have aggravated the indoor radon problem. RadonSeal concrete sealer penetrates deep inside concrete and seals it against radon, as well as water.