BIOLOGICAL EFFECTS OF LOW DOSES OF RADIATION

摘要

To study effects of low level ionizing radiation on human health, epidemiological data on high natural background radiation areas are very important. Such data obtained in China, India, and Japan are reviewed here. No elevated radiation risk with regard to cancer mortality was shown. Humans seem to tolerate a 10-fold increase of environmental external radiation. A virtually safe dose to human health is considered to be 0.1 Gy per year at conservative estimation. Experimental data on biological response specifically to low level ionizing radiation are reviewed.