Cesium & Human Health Unlocking the Mystery of Cesium: Exploring Its Impact on Health When people think of heavy metals, they usually jump to mercury, lead, or aluminum. But cesium? Rarely discussed — and that’s interesting. Cesium is a naturally occurring alkali metal found in rocks, soil, and mineral deposits. In small background amounts, it exists quietly in the environment. The concern arises when human activity increases its concentration — particularly through nuclear a
