Browse evidence-based analysis of health-related claims and assertions
Log in to see full claim details, scientific mechanisms, and cited studies.
People living near volcanoes do not show significantly higher levels of trace elements in their thyroids than those living elsewhere, indicating that volcanic emissions do not lead to meaningful...
The thyroid holds much higher levels of bromine, manganese, selenium, and tin than surrounding muscle and fat in both humans and rats, which suggests these elements may have a functional role in how...
The thyroid naturally holds more of the toxic metals arsenic, cadmium, and mercury than nearby muscle and fat in humans, and arsenic and mercury in rats, which may make it more susceptible to damage...
Both human and rat thyroids contain nearly the same dominant trace elements—zinc, bromine, copper, chromium, selenium, and manganese—in roughly the same proportions, suggesting that the way the...
The thyroid gland naturally holds much higher levels of certain elements like bromine, manganese, selenium, and tin, as well as toxic metals like arsenic, cadmium, and mercury, than nearby muscle and...
In people with chronic fatigue syndrome, those with specific antibodies against selenoprotein P show lower levels of a combined measure of thyroid hormone activation and iodine intake than those...
People with chronic fatigue syndrome who have specific antibodies targeting selenoprotein P excrete less iodine in their urine than those without these antibodies or healthy individuals, suggesting a...
People with chronic fatigue syndrome who have autoantibodies targeting selenoprotein P show lower levels of markers indicating thyroid hormone conversion to its active form, compared to those without...
In people with chronic fatigue syndrome who have specific autoantibodies, selenium in the blood does not correlate with the activity of an enzyme called glutathione peroxidase 3, suggesting that...
A specific type of antibody that targets selenoprotein P is found in a higher percentage of people with chronic fatigue syndrome than in people without the condition.
In people with low selenium levels, the ratio of two thyroid hormones (FT4 to FT3) tends to rise more reliably than the individual levels of those hormones, making it a better marker for detecting...
People with low selenium levels have lower amounts of free T3 hormone in their blood compared to those with normal thyroid function, but their free T4 and TSH levels do not consistently rise,...
In people with very low selenium levels, lower selenium amounts are linked to a higher ratio of inactive thyroid hormone (FT4) to active thyroid hormone (FT3), indicating that selenium deficiency may...
In people with low selenium levels, taking selenium supplements lowers free T4 and the ratio of free T4 to free T3 while raising free T3 levels, suggesting that selenium plays a role in how the body...
In people with low selenium levels from limited food intake or nutritional support, a specific blood ratio of thyroid hormones (free T4 to free T3) is higher than in people with normal selenium...
In people with thyroid disease, the levels of iodine, selenium, and zinc in thyroid tissue are typically within the range seen in earlier studies, even though the general population may have slightly...
In the thyroid gland, iodine levels differ greatly from one follicle to another, while selenium and zinc levels remain relatively consistent across follicles, suggesting iodine is actively regulated...
In patients with mild deficiencies of iodine and selenium, the levels of these elements in thyroid tissue change in ways that relate to the amount of thyroid-stimulating hormone present, suggesting...
Patients with chronic lymphocytic thyroiditis have lower levels of zinc in their thyroid tissue compared to patients with other thyroid conditions such as multinodular goiter, adenoma, or cancer.
In people with thyroid diseases, higher levels of TSH in the blood are linked to lower amounts of iodine, selenium, and zinc in the thyroid tissue, indicating that thyroid function may be related to...
Among people with mild thyroid dysfunction, higher levels of certain autoimmune markers are linked to fewer thyroid nodules and less fluid-filled (cystic) nodules.
In people with mild thyroid dysfunction, a higher ratio of TSH to free T4 hormone levels is linked to thyroid nodules that appear more solid on ultrasound scans.
In people with mild thyroid underactivity, higher levels of TSH are linked to higher ratios of neutrophils to lymphocytes, which may reflect increased systemic inflammation.
Among people with mild thyroid dysfunction, higher levels of certain autoimmune markers correlate with higher levels of ferritin, a protein that stores iron in the body.