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HTDS Guide > Overview
> Findings
HTDS Guide
Findings
The HTDS data show that the risk of thyroid disease was about the
same regardless of the radiation doses people received from Hanford. In
other words, no associations between Hanford's iodine-131 and thyroid
disease were observed.
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Researchers studied all types of thyroid disease, a
disease of the parathyroid glands, and abnormalities of the thyroid
gland that can be seen on ultrasound examinations. |
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The percentages of people with each kind of thyroid
disease or with ultrasound abnormalities were about the same
regardless of their estimated radiation dose from Hanford's
iodine-131. |
The findings do not prove that Hanford radiation had no effect on the
health of the area population. However, they show that if there is an
increased risk of thyroid disease from exposure to Hanford's iodine-131,
it is probably too small to observe using the best epidemiologic methods
available.
Thyroid disease was found in the study population. This was expected
because thyroid disease is common in other populations, especially among
older people and women.
Based on a review of other studies, researchers found that the rates
of thyroid disease in the HTDS population were generally consistent with
the rates of disease detected in other populations.
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