Related Topics: Breast Cancer, Features, Hormones

Breast Cancer And Progesterone

Bioidentical doctors have been saying for years how protective progesterone is for breast cancer. Now new research seems to have ‘discovered’ it but are we talking about the same thing?

AnnA Rushton

Breast cancer is a major health concern as it claims the lives of almost 1,000 women a month. For many years researchers such as Dr Ray Peat, bioidentical pioneers such as Dr John Lee and doctors experienced in bioidentical progesterone usage such as Dr Shirley Bond have advocated the use of bioidentical progesterone to help oppose the excess oestrogen that is behind the disease.

Now it seems that medical science has caught up as newspaper reports recently reported that Cambridge University researchers have shown that ‘progesterone’slows the growth of tumours. I agree it absolutely has been shown to be effective in helping women with a history of breast cancer both preventively and after treatment to help with the side effects.

However what concerns me is that they also state that it is an inexpensive ‘drug used in contraceptives’, so yet again we have the confusion between the natural hormone progesterone and the synthetic progestin. They are not the same, progestins have their own side effects and cannot replicate the effects of the natural hormone in the way that bioidentical progesterone can.

Why bioidentical progesterone is effective

The study appears to suggest that progesterone may work in nearly half of the 55,000 cases diagnosed each year when these are oestrogen receptive. Researcher Jason Carroll said: ‘The results are pretty clear and potentially have direct benefits for many women with breast cancer.’ His research centres on tumours that are fuelled by the hormone oestrogen and in this type of tumour, progesterone ‘talks’ to the oestrogen that is trying to feed the tumour. This stops the cancer from growing as quickly.

The journal Nature has also reported tests on mice with tumours given progesterone at the same time as tamoxifen, a drug widely used after breast cancer surgery, had a dramatic effect. Cancers treated with the progesterone-tamoxifen combination grew half as quickly as those given tamixofen alone. Again this is not news to bioidentical doctors like Dr Shirley Bond who has recommended using progesterone alongside Tamoxifen to offset the side effects of the drug, particularly the horrendous hot flushes which are a common result.

What you can do

Test are being planned, but whether this is with actual progesterone or the synthetic is really not clear. What is self-evident is that a simple way to protect yourself is to tackle any oestrogen dominance to minimise the risk of breast cancer and this is best done by reducing your risk factors. Supplementing with bioidentical natural progesterone is a critical first step, as is making sure you are not overweight as that means you will be producing additional oestrogen in your fat cells, particularly after a hysterectomy and at menopause.

As almost 70 per cent of women now survive breast cancer beyond 20 years any advance in treatment is welcome, but don’t ignore the experience of the thousands of women who are already successfully using bioidentical progesterone. What we need to ensure that it is the real hormone, and not a synthetic progestin, that is being used in any treatment regime.

More information

The book ‘What Your Doctor May Not Tell You About Breast Cancer’ by John Lee MD is available as a Kindle or paperback from Amazon or this website http://www.johnleemd.com/johnleemd-books.html

http://anna.blog.wellsprings-health.com/2014/04/21/3-myths-about-bioidentical-hrt-and-cancer-risks/

http://www.bio-hormone-health.com/2012/10/26/natural-progesterone-as-a-preventive-for-breast-cancer-by-dr-david-zava/

http://www.bio-hormone-health.com/2014/03/10/transdermal-creams-confirmed-as-best-for-hormone-use/

http://www.bio-hormone-health.com/2014/12/08/the-4-key-differences-between-the-hormone-progesterone-and-progestinsprogestogens-you-need-to-know/

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Please feel free to discuss this article in the comments section below, but note that the author cannot respond to queries made there.
Comments 3
Sorted by:  Date | Recommended
AnnA Rushton | 10:09 am, August 1st, 2015

You could use a combination cream such as 20-1 vaginally to help Gisella and would help with the sore breasts.

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Gisella Mantovani | 12:18 am, July 29th, 2015

I have reoccurrence of bladder infections due. Of manapause been on hrt creams but not happy cause I have breast cancer history in my family I have stop taking the cream cause my infections still come back plus my breast were getting tender so went to my go & he suggested to go on low dose suppository but iam very against Taking. These hrt products so can u suggest me what natural hrt creams I try for this problem thanku

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jr | 8:13 pm, July 16th, 2015

This is more evidence that the WHI was not the definitive trial assessing HRT and breast cancer risk. WHI utilized Premarin and Provera (Prempro) or Premarin alone. Prempro increased breast cancer and Premarin alone decreased it. Researchers took these findings to mean that estrogen *prevents* cancer and progesterONE causes it. Both are incorrect. Premarin is horse estrogen and WEAKER than human estradiol, so it may have been acting like tamoxifen in the WHI women. Provera, on the other hand, has consistently been shown to have different effects on cell growth than natural progesterone. E3N, from France, is a better study because it shows that estradiol alone or combined with progestIN causes breast cancer, but estradiol combined with micronized progesterone was neutral.

Hopefully, this new research will be the beginning of a paradigm shift.

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