This Old House does a good job of summarizing the controversy behind the granite-countertops-emit-radon argument. This radioactive gas can cause lung cancer, so any radon is a very real danger, however, the EPA issued a statement saying there isn’t enough evidence to suggest granite countertops are a source of radon. And if you’re still worried, pick up a home testing kit for $25. If you’d like to ditch your granite altogether, check out the myriad of countertop options you have here.