What is it? 
Radon is a colorless, odorless, cancer-causing radioactive gas. Radon comes from the breakdown of uranium in soil, rock and water. Radon exposure can be fixed if you implement some radon reduction systems. 

How does radon enter my home? 
Radon is naturally occurring. It enters the home though cracks and holes in the foundation. Radon is then trapped in the home, causing a build up. Radon can also be found in water; therefore, if it is determined that your home has high levels, it is important to test your water for radon exposure.
Health effects 
Any exposure to radon at any level may cause harm to your health. Radon is the second leading cause of lung cancer. If you smoke and are exposed to radon, your chances of developing lung cancer increase. 
Ways to reduce exposure 
The best way to reduce exposure is to have your home tested so that you know if you are being exposed or not. You can purchase test kits at most hardware stores or through the national safety council. Short-term test are conducted over a period of 2-90 days. Long-term test can last from 91 days to a year. The following are some tips for getting accurate test readings:
  • Use vents and fans that pull radon from beneath the house to the outdoors 
  • Seal cracks and other opening in the foundation 
If you are selling your home, you should do a radon test so that potential buyers can have the results if they are interested. Many homes are now built to prevent radon exposure.