A report in the Asian Pacific Journal of Cancer Prevention looked at the relationship between breast cancer and thyroid hormones, as well as thyroid antibodies.
Eight cross-sectional studies, which included 4,189 subjects, were analyzed.
The authors found that levels of thyroid hormones (free T3 and free T4) thyroid antibodies were significantly higher in those with breast cancer.
Thyroid illnesses currently affect 10 to 40 percent of U.S. adults. And they affect women more often than men by a ratio of 80 to 20.
Meanwhile, breast cancer affects nearly 1 in 7 women.
This study found a correlation between elevated thyroid hormone levels, elevated thyroid antibodies, and increased breast cancer incidence.
The main link between thyroid hormones and breast cancer is iodine deficiency, which sets the stage for both.
Iodine deficiency causes autoimmune thyroid disorders such as Hashimoto’s and Graves’ disease, which are associated with hyperthyroidism, or elevated thyroid hormone production.
Supplementing a hypothyroid patient with thyroid hormone can prove problematic if the patient is iodine deficient since thyroid hormone supplementation will increase the body’s need for iodine.
For both breast and thyroid health, ensure that you have adequate iodine intake.
We are currently suffering an epidemic of iodine deficiency, which explains the explosion of breast and thyroid conditions we are seeing.
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