This document discusses the different types of radiation and their health effects. It outlines ionizing radiation, which can break down body structures and cause nausea, fatigue, hair loss, and death at high levels. Two types of radiation from Fukushima are cesium-137, which can cause sarcoma and contaminate foods/water, and iodine-131, which can cause thyroid tumors but can be prevented with iodine tablets. The document concludes by noting the need to monitor radiation levels until Fukushima is stopped and consider new energy resources to replace nuclear power.