Background radiation refers to the natural, low levels of ionizing radiation that are present in the environment at all times. This radiation comes from various sources, including cosmic rays, radioactive elements in the soil, rocks, and building materials, as well as radiation from outer space. It is typically measured in units such as millisieverts (mSv) or microsieverts (μSv) per year. Background radiation is considered safe for human health at the levels commonly encountered in everyday life. However, prolonged exposure to high levels of background radiation can increase the risk of cancer and other health problems. Monitoring and understanding background radiation is important for assessing and managing potential health risks, especially for individuals who work in environments with higher than normal levels of radiation.