This is found in trace amounts in the bones and teeth. It is chemically similar to calcium. Strontium forms bone salts, which appear stronger than calcium bone salts. Strontium is a non-essential mineral.
Strontium is present in sea water and soil.
Most foods contain small amounts. Though usefulness of strontium has not been proven in laboratory testing, it is believed to improve cell structure in bones and teeth. Helping to prevent tooth decay and softening of bones. It is believed to be a mineral that may help prevent osteoporosis , though it is not prescribed as such. When released into the environment, this does tend to become concentrated in dairy products.