The Hanford Thyroid Disease Study
HTDS at a Glance
Detailed information about how the study was conducted and the findings.
HTDS Technical Report
Video interviews with HTDS research team now available.
HTDS is a study of thyroid disease among people who were exposed to radioactive iodine (iodine-131) from the Hanford Nuclear Site in Washington State. The exposures occurred from 1944 through 1957.
The question of the study was, "Did exposure to iodine-131 from Hanford result in increased incidence of thyroid disease?"
CDC and the Fred Hutchinson Cancer Research Center released the Final Report in June 2002.
- Page last reviewed: January 6, 2014
- Page last updated: August 19, 2010
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