Contaminant Profile
Strontium (Sr)
ATSDR-confirmed: children absorb more strontium; displaces calcium in bone
Overview
Strontium is chemically similar to calcium. The ATSDR confirms that children absorb more strontium due to active bone growth, and excess strontium can cause bone development problems when dietary calcium is low. Stable strontium ingested in high amounts can replace calcium in the skeleton. The ATSDR warns growing children are especially vulnerable. Independent laboratory analyses of rain and soil have found elevated strontium co-occurring with aluminum and barium.
How It Is Deployed
Strontium is found in mixed-metal particulate compositions. It settles from the atmosphere and accumulates in soil, where it enters the food chain through crops and livestock, and in water systems reaching municipal supplies. Strontium isotope analysis provides a method for tracking its movement through the environment.
Reported Health Effects
ATSDR confirms children absorb more strontium due to active bone growth
Excess strontium can cause bone development problems when dietary calcium is low (ATSDR)
Stable strontium ingested in high amounts can replace calcium in the skeleton (ATSDR)
ATSDR warns growing children are especially vulnerable
Documented disruption of calcium metabolism and bone mineralization
Enters food chain through contaminated soil and water, concentrating up trophic levels
Environmental Impact
Strontium accumulates in topsoil and is taken up by plants, entering the food chain through crops and livestock. It contaminates freshwater systems and is persistent in the environment. Independent analyses in agricultural regions have identified strontium levels that exceed natural background concentrations.
Citations & References
Sources & Further Reading
Evidentiary Disclaimer: This profile is part of an ongoing investigative evidence base. Health effects listed are documented for these substances through peer-reviewed and government sources cited above. The GeoFight is an initiative of 4GFC, a registered 501(c)(3) nonprofit organization. This content does not constitute medical advice. Donations do not create an attorney-client relationship.
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