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+971 (0)5566 13061 | +44 (0) 790 3120 410 keith@balancedbodymind.com

Estrogen and aromatase,  (and the  role of prolactin and a lack of progesterone) in cancer are well documented and so are the stimulatory effects of the neuro-endocrine (nervous system/hormones) disruptors termed xenoestrogens, which mimic the action and excess of estrogen (Kim, Kurita, & Bulun, 2013) (Mungenast & Thalhammer, 2014). Estrogen and notably estradiol/E2 is often measured by a standard blood test, which remains as problematic as other blood tests such as TSH, which I have previously described.

“ At first, it was assumed that the amount of the hormone in the blood corresponded to the effectiveness of that hormone. Whatever was in the blood was being delivered to the “target tissues.” But as the idea of measuring “protein bound iodine” (PBI) to determine thyroid function came into disrepute (because it never had a scientific basis at all), new ideas of measuring “active hormones” came into the marketplace, and currently the doctrine is that the “bound” hormones are inactive, and the active hormones are “free.” Ray Peat

In addition to the obvious production of estrogen in the reproductive tissues, it’s possible to increase estrogen conversion via aromatase, an enzyme which converts androgens such as testosterone to estrogen, is one of the other main factors. Adipose tissue is a prime location for increased aromatase activity.

Another problem with measuring hormones in the blood is that it rarely accounts for the intracellular accumulation of hormones. Estrogen in excess in the cell, promotes fluid retention, swelling and causes an increase in calcium. Measuring pituitary hormones and in particular prolactin (PRL) may give us a better indication of the relative excess of estrogen due to estrogens stimulatory effect on the anterior pituitary and PRL.

PRL excess is associated with issues such as breast cancer, prostate cancer, resistance to chemotherapy, infertility in both men and women, male reproductive health and galactorrhea (Sethi, Chanukya, & Nagesh, 2012) (Rousseau, Cossette, Grenier, & Martinoli, 2002). Treating PRL excess, particularly linked to the most common form of pituitary tumour (1:1000), the prolactinoma is often treated effectively by the dopamine agonists Bromocriptine or Cabergoline. However, it’s not beyond the realms of possibility that prevention and treatment of excess PRL production, be achieved with decreasing synthesis and exposure to estrogens both endogenous and from external sources.

Myopic thinking.

Modern medical thinking and analysis has led us to a reduced proposition when it comes to diseases like cancer. Cancer is essentially a metabolic disease, and the proposed respiratory defect, the idea of scientist Otto Warburg, is often replaced by the mechanistic thinking of the receptor theory of disease. Estrogen receptors are one of the main evaluations for assessing types of cancer but the very essence of the testing leads us to an increased myopic line of questioning, failing to ask the necessary questions that underlie a persons health status.

If a city is being evacuated, its railroad transportation system, will be quickly “saturated,” and the impatience of a million people waiting for a ride wont make much difference. But if they decide to leave on foot, by bicycle, boat or balloon, in all directions, they can leave as soon as they want to, any number of people can leave at approximately the same time. A non-specific system is ‘saturable,” a nonspecific system isn’t saturable. The idea of a cellular “receptor” is essentially that of a “specific” transport and/or response system. Specific transporters or receptors have been proposed for almost everything in biology – for very interesting ideological reasons– and the result has been that the nonspecific processes are ignored and supressed. Ray Peat


Sometimes there are minimal opportunities for people to change their environment. Perhaps creating more solutions to enable better conversations with the environment, is the most pragmatic solution available?

Maintaining the body’s production of energy by optimising thyroid production, suppression of TSH (thyroid stimulating hormone) and lowering of other stress hormones like ACTH, intake of carbohydrates, protein and adequate light can support the necessary energy needed for the liver and digestive system to enhance detoxification of estrogen and estrogen mimickers.  A sluggish, fatty or hypothyroid state of the liver, makes it difficult for estrogen to be excreted. In states of constipation, beta glucaronidase converts inactive estrogen to the active form.  Keeping both estrogen and aromatase low seems a step in the right direction.

Foods also have the capacity to enhance estrogen synthesis. Mushrooms have shown to be a potent inhibitor of aromatase enzymes and have the capacity to lower the systemic production of estrogen (Grube, Eng, Kao, Kwon, & Chen, 2001). However it’s important to note that mushrooms need substantial cooking to reduce the liver toxins present.

“The hydrazine-containing toxins that Toth and others wrote about are destroyed by heat. Since extracts made by boiling the mushrooms for three hours were very active, I think it’s good to boil them from one to three hours.

If you want to know more about prepping mushrooms and soups, then check out the link below for The Nutrition Coach, who reminded me why mushrooms for lowering estrogen and a great source of protein will be helpful when consumed regularly.



Grube, B. J., Eng, E. T., Kao, Y.-C., Kwon, A., & Chen, S. (2001). White Button Mushroom Phytochemicals Inhibit Aromatase Activity and Breast Cancer Cell Proliferation. J. Nutr., 131(12), 3288–3293. Retrieved from http://jn.nutrition.org/content/131/12/3288

Kim, J. J., Kurita, T., & Bulun, S. E. (2013). Progesterone action in endometrial cancer, endometriosis, uterine fibroids, and breast cancer. Endocrine Reviews. http://doi.org/10.1210/er.2012-1043

Mungenast, F., & Thalhammer, T. (2014). Estrogen biosynthesis and action in ovarian cancer. Frontiers in Endocrinology, 5(NOV). http://doi.org/10.3389/fendo.2014.00192

Rousseau, J., Cossette, L., Grenier, S., & Martinoli, M. G. (2002). Modulation of prolactin expression by xenoestrogens. Gen Comp Endocrinol, 126(2), 175–182. http://doi.org/10.1006/gcen.2002.7789\rS0016648002977890 [pii]

Sethi, B. K., Chanukya, G. V, & Nagesh, V. S. (2012). Prolactin and cancer: Has the orphan finally found a home? Indian Journal of Endocrinology and Metabolism. http://doi.org/10.4103/2230-8210.104038




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