Mould growth is not good for human health. Exposure to mould might trigger symptoms such as runny nose, red/itchy eyes, skin rash, sneezing, and much more. Read this article to learn more about how you can prevent mould growth in your bathroom.
According to the current Canadian guideline, the radon concentration should be no greater than 200 becquerels per cubic metre (200 Bq/m^3) for indoor air in dwellings. Radon exposure higher than the guideline presents a health risk. It is up to the home-owner to determine which radon concentration (below the Canadian guidelines, of course) they are willing to accept. Learn more about how you can test for radon in your home.