Strontium is released into the environment by natural processes and as a result of human activities. Humans are exposed to strontium via drinking water and via uptake into food plants. Strontium compounds are also used in the manufacture of ceramics and glass products. This Concise International Chemical Assessment Document (CICAD) evaluates the scientific literature on the health and environmental effects of strontium and strontium compounds. This CICAD focuses on the stable isotopes of strontium and the radioactive isotopes of strontium are not reviewed.