It's the second leading source of lung cancer cells, after cigarette cigarette smoking. As an odorless and anemic gas, there is no other way to know if it is in your home unless you test for it. One of the biggest issues in the radon market is follow-up screening. Regrettably, lots of people think they are risk-free because they have a radon reduction system but have actually never done a radon test to ensure it's really working. Please make certain to do a radon test after a reduction system is installed and also at the very least every 2 years after that.