
1. Radon is a naturally radioactive gas released from soil, water, and rocks. It is invisible, tasteless, and odourless. According to WHO, this gas is a potential health risk to the human population.Studies show that this gas is the second leading cause of lung cancer, next to smoking. When radon decays, it produces radioactive dust, which, when inhaled for a long time, can damage lung tissues, causing lung cancer. Therefore, it is considered a human carcinogen.
2. Research shows other potential health risks related to inhalation of radon gas exposure are Parkinson’s disease, Alzheimer’s disease, and dementia. Radon gas poisoning is considered hazardous to human health. There is no specific threshold up to which level it can be considered a health risk. Even a small concentration of long-term exposure can cause lung cancer.
3. In Nature, radon is everywhere. But in some areas, radon is present in higher levels like near coal mines, limestone caverns and near surface of bedrock. Soil with high permeability, soil of a slope or hill, soil close to bedrock, mining plant, oil refineries are found to have higher concentration of radon.

4. How does radon exposure affect human life on a day-to-day basis? Buildings which are homes, offices, and educational institutions like schools, colleges, and shopping malls, where we spend most of our hours cause the exposure to this harmful gas. Radon gas is trapped in cracks of walls, floors, in the basement, crawl spaces, in the drainage system like pipes, wires that are not sealed properly. Bulding materials like concrete, granite also emit radon but in low levels.

5. Radioactive particles are released when radon gas decays, which are inhaled in the lungs when breathed. The particles get deposited in the lung tissues over a period causing damage to lung tissues. The onset of the disease and the period of exposure can be many years. Many risk factors can influence like:
• Age and duration of exposure.
• Concentration of exposure.
• Climate-like exposure is higher in winter than in summer.
• Water sources.
• Smoking.

6. Children are more vulnerable to radon exposure as they breathe faster than an adult. Young children’s lungs are different in shape and size as compared to adult lungs. These factors make them at greater risk of high level of radon exposure than average adult. But there are not yet, any concrete studies to prove that children have higher risk of lung cancer than adult due to radon exposure.

7. Radon is present in water of the reservoirs, lakes, rivers and underground sources. So, home water supply coming from a treatment facility is much safer than coming directly from underground sources and wells. People working in underground work like coal mines, other metal mining businesses, fertilizer factories, oil refineries are more vulnerable to radon exposure.

8. Safety measures to reduce radon gas exposures at homes are like :
• Proper ventilation and airflow inside the house by opening windows, using fans and air conditioning.
• Using safe treatment water supply.
• Sealing cracks in floors, walls, and pipes with materials recommended for these purposes.
• Prevent smoking inside the house as well as outside.
• Using radon-resistant techniques while in the construction phase of the building rather than later.

9. Testing: If the radon level is never tested at your house, it is important to contact a Professional use a Test Kit or install a radon reduction system. However, every Country has their safety standards, but usually radon level of 4 pCi/L or above is not safe. Below 2pCi/L is considered safe.A radon reduction system is usually important to install in such homes. While buying a property, renovating, and repairing, the radon levels need to be measured before and after.
10. As already mentioned, radon present everywhere in the environment is not a health risk factor to the human population. Trouble occurs when radon exposure reaches inside homes or the buildings that people live or visit daily like schools and offices. So, it is important to have general awareness, using regular radon testing kits, installing radon reduction system if necessary, safety measures to reduce exposures and safe water supply. Homes and buildings below 2pCi/L is recommended and safe for human dwelling.
Thanks for reading.
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