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Progesterone and Cancer Prevention

 

Many articles and papers have been written that implicate estrogen in connection to breast cancer. While this is a well accepted factor now in treatment of breast cancer, less written about is the importance of progesterone for the prevention of breast cancer.  

 

Progesterone reduces estrogen’s stimulating of breast cancer growth with several well known biochemical events that lead to tumour growth: 

 

Progesterone increases the level of enzymes that convert cancer prolific estrogen (estradiol) to inactive cancer protective estrogen (estrone sulfate).

Progesterone inhibits estrogen activity in the breast tissue and decreases the probability of clotting. 

Progesterone prevents angiogenesis known to be a major contributor in early stage of breast cancer tumour formation and growth.

Progesterone prevents vasodilatation caused by excess estrogen and thus acts as an anti metastatic agent

Progesterone activates natural killer cells that function as in immune defence mechanism destroying cancer cells.

Progesterone has a calming effect, helps with perceived  stress, thus lowering cortisol production by the adrenals

Here’s the critical point about progesterone for breast cancer prevention: synthetic progestins promote breast cancer and heart disease, while natural progesterone beneficially lowers breast cancer and heart disease risk. Progestin (synthetic) is NOT Progesterone (natural). Unfortunately many physicians believe progestins to be equivalent to progesterone. This is a mistake.

 

The enzymes needed to metabolize progesterone are present in the human body, not so with progestin. Further, the biochemical structures of several synthetic progestins have carbon-carbon bonds, which are not present in the hormones that humans have. Thus synthetic progestin has well known detrimental effects on women’s health while progesterone has beneficial effects on breast health and cancer prevention.

  

Of course, your breast cancer prevention strategy has to include other contributing factors, such as healthy diet, physical activity, avoidance of pollutants, stress reduction and possibly natural progesterone therapy. Investigate and see if this will work for you.

 

Alexander Mostovoy is a clinician, writer, researcher, and public speaker, and is recognized as a leading authority on breast health and cancer prevention. He has lectured extensively across Canada, the United States, South America, and Europe, and has educated and trained physicians in breast cancer prevention and the use of medical thermography. He is the best selling author of the book Breast Cancer Is A Preventable Disease and a co-creator of the Breast Cancer Prevention Global Virtual Conference. He is currently in the post-production stage of a documentary on Breast Cancer called Daisies Do Not Grow In Cement.

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