ionize other elements.

In addition to the direct effect that radiation has, some elements can be absorbed into the body causing greater internal damage to specific organs. Strontium 90 (created in the fission process) is similar in chemical composition to calcium and lodges in the bones, especially in children. Iodine 131 is absorbed by the thyroid gland and can result in cancer of the thyroid or hypothyroidism. Cesium 137 is taken into the body much like potassium and is distributed fairly evenly.