Supposed hypothyroidism could actually be estrogen dominance (ED)
Estrogen Dominance (ED) occurs when there is an imbalance of estrogen over PROGESTERONE in women (or TESTOSTERONE in men). Numerous, previously non-existent sources of estrogen in the Western world are now universally entering our bodies from our environment and diet. This estrogen overload is overwhelming the delicate balance with other hormones in the body, and Progesterone in particular. For information on this “epidemic”problem, see:
Thyroid Hormone and estrogen have opposing actions
Thyroid Hormone causes fat calories to be turned into usable energy
Estrogen causes food calories to be stored as fat
– Estrogen dominance inhibits thyroid action and lowers the rate of metabolism of the Body
– Natural Progesterone inhibits estrogen action
Estrogen dominance mimics hypothyroidism by interfering with thyroid hormones
The symptoms of hypothyroidism may occur because of ED. Also, many other “presumed“ thyroid dysfunctions (E.g. falling hair, water retention, loss of memory, dry skin) and autoimmune disorders are actually caused by ED.
– Estrogen increases Thyroid Binding Globulin (TBG) in blood hindering TH activity. Thyroid hormones are carried by TBG, a specific protein produced by the liver. An increased number of binding proteins hold onto more of the thyroid hormone. Since protein-bound (“tied-up”) hormones can't bind to their receptor, this reduces the free thyroid hormones in the blood that will be available to cells for maintaining metabolism, even though blood TH levels may test normal or high.
Circulating thyroid hormone is highly bound (>99%) to TBG.
▲ Estrogens will increase circulating levels of TBG, which decreases amount of free T4 available for cells to use, even though total T4 level increases. Drugs that can reduce free T4 include:
•Birth control pills
▼ Androgens will decrease circulating levels of TBG, which increases free T4 and reduces total T4. Drugs that can increase free T4 include:
•Antithyroid drugs (E.g. propylthiouracil and methimazole)
– Menopause and perimenopause are transitional situations which require more than the usual amount of thyroid hormone. Due to higher estrogen compared to Progesterone levels.
– Estrogen inhibits thyroid secretion / Progesterone stimulates it. The body makes Progesterone from cholesterol IF there is adequate thyroid hormone and other nutrients including vitamin A and certain enzymes.
– Estrogen dominance decreases sensitivity to thyroid hormone. A lab test will show thyroid hormone levels to be NORMAL or LOW NORMAL. It is the sensitivity to thyroid hormone that is decreased.
✔ High estrogen levels cause fat build up for a pregnancy. Estrogen does this by lowering your sensitivity to thyroid hormone.
Solution for Clinical Hypothyroid due to Estrogen Dominance
Deal with the estrogen dominance and after several months the thyroid function will return to normal. Thyroid supplements can be cut back, and eventually possibly discontinued.
The plan will include:
(1) Cutting down on estrogen intake
(2) Supplementing adequate levels of Natural Progesterone;
The crucial nutrient for Thyroid Hormone synthesis in the body is Iodine.
Estrogen /Iodine /Cancer Connection
Iodine metabolizes carcinogenicESTRONE andestrogen metabolite16-α-hydroxyestrone. ▲ “anti-carcinogenic”ESTRIOL - Dr. Jonathan Wrights reports that iodine elevates the amount of anti-carcinogenic ESTRIOL made and lowers the amount of ESTRONE and ESTRADIOL, so that the 3 forms of estrogen are more balanced in favor of cancer prevention.
Wright J. One mineral can help a myriad of conditions from atherosclerosis to "COPD" to zits. [cited April 3, 2007]; Available from: http://www.tahoma-clinic.com/iodide.shtml
Iodine down-regulates estrogen receptors in breast cancer. Molecular work by Eskin's group has shown that iodine down-regulates the estrogen receptors in breast cancer cells and changes the expression of genes involved in differentiation, cell cycle, hormone metabolism, and cancer growth.
Stoddard FR, HShah K, Johannes G, Eskin BA, Brooks A. Iodine alters gene expression profile in the MCF-7 breast cancer cell line. Thyroid 2006;16(9):894