Tag Archives: breast cancer

Paleo and Breast Cancer Prevention: Is There a Link?

It’s no surprise that eating a diet rich in fresh vegetables, lean meats, wild fish and natural fats, and getting regular exercise is a healthier approach and will lend better odds to your longevity than what has, unfortunately, become the Standard American Approach.

It’s Breast Cancer Awareness Month, and you might wonder if eating Paleo can prevent something as widespread as this disease.

Sometimes we need to read between the lines and set the word ‘Paleo’ aside for a moment. Return to the basics, precisely what “True Paleo” is all about.

So, rather than trying to find studies that prove “Paleo prevents breast cancer,” we can discover fact simply by referring to the natural foods that are the essence of the approach.

For example, Dr. Kristi Funk, a board-certified surgical breast specialist and founder of the Pink Lotus Breast Center discusses the ‘superfoods’ that may help prevent cancer as well as help patients while undergoing treatment in the Ultimate Breast Cancer Prevention Guide:

  1. Three cups of green tea a day can prevent breast cancer by as much as 50% because of its high EGCG antioxidant content. Squeeze a little lemon into your cup and increase the antioxidant power of your tea.
  1. Garlic is a good immunity booster that also has anti-inflammatory properties.
  1. Olive oil, borage oils and flaxseed oil contain monounsaturated fat, which can help suppress breast cancer.
  1. Turmeric helps decrease estrogen. As little as one teaspoon a day has been shown to reduce tumor growth. Get your daily dose by mixing it into salad dressings, rice or vegetable dishes.
  1. Cruciferous vegetables, such as kale, bok choy and Swiss chard bind estrogen in your GI tract and reduce tumor stimulation. They also detoxify the liver, which helps reduce the toxins flowing through your body that can irritate cells and turn them into early cancers.
  1. Seaweed/Kelp are high in iodine, this is another estrogen reducer.
  1. Vitamin D (2000 IU) Calcium-rich foods, such as sardines, salmon, milk and cheese are also highly recommended. Or, 15-20 minutes of sunshine every day can help every day can help you in getting your daily dose of Vitamin D, which can prevent tumor metastasis, reduce cancer cells and aid estrogen inhibitors.

In summary, Dr. Funk said, “All of these combined can decrease your breast cancer risk by up to 50%.”

Notice anything interesting about all the bullet points?

They’re all food. Real, fresh, unadulterated food that also happen to be Paleo-friendly.

We can also refer to The Paleo Diet, in which Dr. Cordain points out that grain and starch-based diets, which are the antithesis of a Paleo approach, may elevate the risk of breast cancer as they “elevate insulin, increases IGF-1 (insulin-like growth factor one, a potent hormone in all tissues that regulates growth), lowers IGFBP-3 (insulin-like growth factor binding protein three) which causes the body to become less sensitive to one of its natural signals which limits growth.”1

Sadly, all those confusing messages in the media that ‘meat causes cancer’ or that we should ‘rely on a model such as the MyPlate template and be sure to include whole grains in our regular regime’ are just that – confusing messages that get easily taken out of context and may end up increasing your risk of becoming sick, despite the best of intentions.

So is Paleo the way to go?
I believe so.

Dr. Cordain sums it up best. “It’s almost certain that no single dietary element is responsible for all cancers, but with the low-glycemic Paleo Diet, high in lean protein and health promoting fruits and veggies, your risk of developing many types of cancers may be very much reduced.”2

It’s hard to imagine not being the healthiest you could potentially be when you’ve armed yourself with all the goodness of an eating plan based on those local, fresh, seasonal veggies, wild proteins and good fats, with a bit of those ‘superfoods’ thrown in for balance.

Collectively, they’ll all serve to create a strong immune system, balanced blood sugar levels, and a higher likelihood that you can remain cancer free.

I’ll leave you with a testimonial and let you make the call for yourself.

“Dear Paleo Diet Team,

I am a breast cancer survivor. I was first diagnosed with breast cancer on May 25, 2001: T1, Node Negative, Her2 positive and nuclear grade 3. I had a lumpectomy, aggressive chemotherapy and radiation. On March 26, 2004 my breast cancer returned to my L-1 disk in my spine. I had 6 months of weekly chemotherapy and radiation. By December 15, 2004 I was declared in remission.

Herceptin was part of the chemo protocol that I had received in 2004 and have been receiving it every three weeks since the beginning of January 2005. Tumor marker tests are also conducted every other month. Unfortunately, my tumor markers started rising and by the end of May tests the upward trend was disturbing.

I share this news with my pharmacist who is also a certified nutritionist on May 28th. He recommended that I immediately eliminate sugar and grains from my diet. I found your book, The Paleo Diet, and started to eliminate sugar, grains and dairy from my diet that day.

The results have been astonishing to say the least. On May 24, 2005 my CA 27 29 marker was 43 and as of October 24, 2005 is 24. My CA 15 3 marker was 28.6 on May 24, 2005 and is now 22.9. I am 100% convinced that it is a result of being a very compliant follower of the Paleo Diet. Cancer likes sugar. Sugar is not my friend and is an enemy to my health.

I am very thankful to a very astute and pharmacist/ certified nutritionist who is on top of the current diets and the effects on one’s health. We are what we eat. I do not miss any of the sweets that I craved so and love the fact that I have finally lost the 25 chemo/radiation weight that I could not lose no matter how much exercise or dieting I did since 2002. Fresh fruits, fresh vegetables and lean meats and fish are the mainstay of my current good health.

I continue to emphasize to my incredible team of physicians at Duke that the wonderful lower tumor marker results are a result of my new diet. Thank you for your book and I will continue to spread the message to my support group and other women I meet who have breast cancer. Mind, body and soul-keeping each healthy is essential to survive this terrible disease. The diet recommended to me on May 28, 2005 empowered me to continue doing everything possible to win this battle.




1. The Paleo Diet, by Dr. Loren Cordain (Wiley & Sons, 2002) pp 78-79

2. The Paleo Diet, by Dr. Loren Cordain (Wiley & Sons, 2002) p 80

Breast Cancer and Other Cancers | The Paleo Diet

Although many women fear breast cancer, and rightly so, the greatest risk to health for both men and women comes not from cancers, but from cardiovascular disease. In the figure below, you can see that the leading cause of death in the U.S. is cardiovascular disease followed by cancer.1 In both men and women cardiovascular disease plus cancer cause a little over 60% of all deaths from all causes combined. The good news here is that the Paleo Diet contains numerous nutritional elements which can greatly reduce your risk of contracting both of these diseases.

There is no doubt that breast cancer is a serious illness which in many cases can be life threatening. In the two charts below, I have listed the top 10 causes of cancer deaths in the U.S. in 2007.5 Note that for both men and women, lung cancer is responsible for nearly twice as many fatalities as the next leading cancer deaths (breast cancer for women and prostate cancer for men). Almost all lung cancer is caused by smoking and consequently is entirely preventable by simply eliminating this nasty habit.

Breast Cancer Death | The Paleo Diet

Fatal Cancers Women | The Paleo Diet

Fatal Cancers Men | The Paleo Diet

When we consider breast cancer from an evolutionary perspective,7 a most remarkable revelation surfaces – it was rare or non-existent in historically studied hunter gatherers and other less westernized peoples>11, 13, 22 Similar observations have been consistently noted for almost all of the other common modern cancers (lung, prostate, colorectal, pancreatic, leukemia and ovarian) listed in the charts above.2, 4, 11-13, 15, 17, 18, 20, 22, 23 Further, documented cancers from the fossil record in pre-agricultural people are extremely rare or nonexistent.3, 4, 10 Some of the most convincing evidence demonstrating that cancer is a disease of modern civilization comes from studies of the Inuit (Eskimo) people as they made the transition from their Stone Age way of life to the Space Age in less than two generations.

Here is a representative quote from an article on Eskimo health that appeared in The Canadian Medical Association Journal from May of 1936,23 “In the Western Arctic Dr. Urquhart has as yet not met with a single case of cancer in the seven years of his practice. Cancer must be extremely rare in the Eastern Arctic also.” Similar observations come from yet another frontier physician, Dr. Samuel Hutton, who treated non-westernized Inuit people in Labrador from 1902 to 1913;23 “Some diseases common in Europe have not come under my notice during a prolonged and careful survey of the health of the Eskimos. Of these diseases the most striking is cancer. I have not seen or heard of a case of malignant new growth in an Eskimo.” As the Inuit people became more and more westernized and began to replace their traditional foods with processed foods, their relative immunity to cancer diminished.8, 14 In a paper published in 1984, Drs. Hildes and Schaefer13 examined cancer rates in the Inuit from 1950 to 1980 and noted, “The most frequent tumours in the most recent period studied were lung, cervical and colorectal cancers. Breast cancer was absent before 1966 and was found in only 2 of 107 Canadian Inuit women stricken with cancer from 1967 to 1980, whereas the recent rates in the longer-acculturated Inuit of Alaska and Greenland have approached those prevailing in modern Western women.”

The virtual absence of breast cancer and other common western cancers is not entirely restricted to the Inuit. The world famous Nobel prize winning physician, Dr. Albert Schweitzer, commented,22 “On my arrival in Gabon, in 1913, I was astonished to encounter no case of cancer…I cannot, of course, say positively that there was no cancer at all, but, like other frontier doctors, I can only say that if any cases existed they must have been quite rare. This absence of cancer seemed to me due to the difference in nutrition of the natives as compared with the Europeans…In the course of the years, we have seen cases of cancer in growing numbers in our region. My observations incline me to attribute this to the fact that the natives were living more and more after the manner of the whites…” Dr. Schweitzer got it right. The virtual absence of breast, prostate, colorectal and other common western cancers in the hunter gatherers of Gabon had everything to do with their diet.

The Paleo Diet maintains multiple nutritional characteristics which will help to protect you against breast and other common western cancers. By now, you are well aware that the Paleo Diet is a low glycemic index, low glycemic load diet. A recent meta analysis involving 10 epidemiological studies and more than 575,000 subjects by Drs. Dong and Qin clearly showed that high glycemic index diets increased the risk for breast cancer.6 Similar results were observed in an even larger meta analysis by Dr. Barclay and colleagues from the University of Sydney.26

It is not only the Paleo Diet’s low glycemic index and load that will protect you from breast cancer, but also its rich omega 3 fatty acid content and low levels of vegetable oils. In tissue and animal models of mammary cancer, omega 6 fatty acids from vegetable oils stimulate cancer growth, whereas long chain omega 3 fatty acids from fish oil inhibit it.29 Further a large meta analysis by Dr. Saadatian-Elahi and co-workers showed a significant protective effect of omega 3 fatty acids on breast cancer risk.21 Further, omega 3 supplements in humans can increase the concentration of these healthful fats in breast tissue, similar to Eskimo women who were free of breast cancer until they became westernized.24

The Paleo Diet is a milk and dairy free diet, and meta analyses have demonstrated that milk drinking increases women’s lifetime risk for ovarian cancer.27 For men, milk drinking increases the lifetime risk for prostate cancer.28

Finally, the Paleo Diet is exceedingly rich in fresh fruits and veggies.30 These foods are Mother Nature’s best medicine, and meta analyses of population studies confirm that fresh fruits and vegetables protect women from breast and many other cancers.9, 16, 19, 25 Any way you look at it, the Paleo Diet is a good remedy to prevent cancer.


Loren Cordain, Ph.D., Professor Emeritus


1. American Heart Association, 2010 Heart & Stroke Statistical Update.

2. Bulkley JL. Cancer among primitive tribes. Cancer 1927;4:289-295.

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5. Department of Health and Human Services. Centers for Disease Control and Prevention. United States Cancer Statistics.

6. Dong JY, Qin LQ. Dietary glycemic index, glycemic load, and risk of breast cancer: meta-analysis of prospective cohort studies. Breast Cancer Res Treat. 2011 Apr;126(2):287-94.

7. Eaton SB et al. Women’s reproductive cancers in evolutionary context. Quart Rev Biol 1994;69:353-67

8. Friborg JT, Melbye M. Cancer patterns in Inuit populations. Lancet Oncol. 2008 Sep;9(9):892-900.

9. Gandini S, Merzenich H, Robertson C, Boyle P. Meta-analysis of studies on breast cancer risk and diet: the role of fruit and vegetable consumption and the intake of associated micronutrients. Eur J Cancer. 2000 Mar;36(5):636-46.

10. Halperin EC. Pale-oncology the role of ancient remains in the study of cancer. Perspect Biol Med 2004;47:1-14.

11. Hearsey H. The rarity of cancer among the aborigines of British Central Africa. Brit Med J, Dec 1, 1906, 1562-63.

12. Henson, WW. Cancer in Kafirs: suggested cause. Guy’s Hospital Gazette, March 26, 1904, 131-133.

13. Hildes JA, Schaefer O. The changing picture of neoplastic disease in the western and central Canadian Arctic (1950-1980). Can Med Assoc J 1984;130:25-32.

14. Kelly J, Lanier A, Santos M, Healey S, Louchini R, Friborg J, Young K, Ng C. Cancer among the circumpolar Inuit, 1989-2003. II. Patterns and trends. Int J Circumpolar Health. 2008 Dec;67(5):408-420.

15. Lanier AP, Bender TR, Blot WJ, Fraumeni JF Jr. Cancer in Alaskan Natives: 1974-78. Natl Cancer Inst Monogr. 1982;62:79-81

16. Lissowska J, Gaudet MM, Brinton LA, Peplonska B, Sherman M, Szeszenia-Dabrowska N, Zatonski W, Garcia-Closas M. Intake of fruits, and vegetables in relation to breast cancer risk by hormone receptor status. Breast Cancer Res Treat 2008;107:113–7

17. Rabinowitch IM. Clinical and other observations on Canadian Eskimos in the Eastern Arctic. Can Med Assoc J 1936;34:487-501.

18. Renner W. The spread of cancer among the descendants of the liberated Africans or Creoles of Sierre Leone. Brit Med J, Sept 3, 1910, 587-589.

19. Riboli E, Norat T. Epidemiologic evidence of the protective effect of fruit and vegetables on cancer risk. Am J Clin Nutr. 2003 Sep;78(3 Suppl):559S-569S.

20. Riveros M. First observation of cancer among the Pampidos (Chulupi) Indians of the Paraguayan Chaco. Int Surg 1970;53:51-55.

21. Saadatian-Elahi M, Norat T, Goudable J, Riboli E. Biomarkers of dietary fatty acid intake and the risk of breast cancer: a meta-analysis. Int J Cancer. 2004 Sep 10;111(4):584-91

22. Stefansson V. Cancer: Disease of Civilization? Hill and Wang, NY, 1960.

23. Urquhart JA. The most northerly practice in Canada. Can Med Assoc J. 1935;33:193-196.

24. Yee LD, Lester JL, Cole RM, Richardson JR, Hsu JC, Li Y, Lehman A, Belury MA, Clinton SK. Omega-3 fatty acid supplements in women at high risk of breast cancer have dose-dependent effects on breast adipose tissue fatty acid composition. Am J Clin Nutr. 2010 May;91(5):1185-94.

25. Zhang CX, Ho SC, Chen YM, Fu JH, Cheng SZ, Lin FY. Greater vegetable and fruit intake is associated with a lower risk of breast cancer among Chinese women. Int J Cancer. 2009 Jul 1;125(1):181-8.

26. Barclay AW, Petocz P, McMillan-Price J, Flood VM, Prvan T, Mitchell P, Brand-Miller JC. Glycemic index, glycemic load, and chronic disease risk–a meta-analysis of observational studies. Am J Clin Nutr. 2008 Mar;87(3):627-37

27. Genkinger JM, Hunter DJ, Spiegelman D, et al. Dairy products and ovarian cancer: a pooled analysis of 12 cohort studies. Cancer Epidemiol Biomarkers Prev. 2006 Feb;15(2):364-72

28. Gao X, LaValley MP, Tucker KL. Prospective studies of dairy product and calcium intakes and prostate cancer risk: a meta-analysis. J Natl Cancer Inst. 2005 Dec 7;97(23):1768-77.

29. Dilprit Bagga D, Capone S, Wang H, Heber D, Lill M, Chap L, Glaspy JA. Dietary Modulation of Omega-3/Omega-6 Polyunsaturated Fatty Acid Ratios in Patients With Breast Cancer. J Natl Cancer Inst. 1997; 89(15):1123-1131.

30. Cordain L. The nutritional characteristics of a contemporary diet based upon Paleolithic food groups. J Am Nutraceut Assoc 2002; 5:15-24.

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