A recent study by the Bundesamt für Strahlenschutz reveals that radon exposure may be responsible for approximately 6.3% of lung cancer deaths in Germany, equating to about 2,800 fatalities annually. Radon, a colorless, odorless radioactive gas that seeps from the ground, concentrates in basements and ground floors, significantly raising health risks for residents. The highest cancer risk rates due to radon are found in Thüringen and Sachsen, while Berlin, Hamburg, and Bremen report the lowest. The BfS recommends homeowners conduct radon measurements and implement ventilation or sealing measures to mitigate exposure.