Eating Flaxseed May Reduce Breast Cancer Mortality By Up To 70%

Mainstream medicine continues to push women to get yearly mammograms  (recently, adding women as young as 40 to their recommendations) in order to “fight” the epidemic of deadly breast cancer affecting women at an alarming rate. However, an underreported body of evidence shows that mammograms do nothing to prevent the disease or improve survival rates. But the amazing little flaxseed does.   

Scores of studies reveal the anticancer effects of flaxseed, across a wide range of cancers. Researchers from the University of Toronto reviewed the literature to answer questions about the compounds found in flaxseed and how effective they are in reducing breast cancer risk and tumor growth, and whether flaxseeds interact beneficially with breast cancer drugs.

They reviewed in vitro, animal, observational, and clinical studies on flaxseed and flaxseed oil, as well as lignans found in flaxseed.

Lignans are a class of phytoestrogens or plant estrogens that also act as antioxidants. Other foods also contain lignans including sesame, sunflower and pumpkin seeds, grains (rye, barley, wheat and oats), broccoli and beans.   But flaxseed has hundreds of times the amount of lignans as any of the others.

The University of Toronto review documents the amazing power of flaxseed to prevent and slow the growth of breast cancer.   Here’s what the studies tell us:

• The majority of animal studies show a diet of 2.5%-10% flaxseed or the equivalent amount of lignan or flaxseed oil reduces tumor growth.
• Diets consisting of 10% flaxseed and the equivalent amount of lignans do not interfere with but rather increase the effectiveness of tamoxifen.  A diet of 4% flaxseed oil increases trastuzumab/Herceptin effectiveness.
• Observational studies show flaxseed and lignan intake, urinary excretion, or serum levels are associated with reduced breast cancer risk, particularly in postmenopausal women.
• Lignans reduce breast cancer mortality by 33% to 70%.  They also reduce all-cause mortality by 40%-53%.  In both cases, lignans do not reduce the effectiveness of Tamoxifen.
• Clinical trials show that taking 25 grams per day of flaxseed (containing 50 mg lignans) for 32 days reduces tumor growth in breast cancer patients.
• Taking 50 mg of lignans for one year reduces breast cancer risk in premenopausal women.

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Flaxseeds protect women from breast cancer in a variety of ways.  Here are just a few:

1. Flaxseeds decrease tumor cell proliferation.  When eaten, lignans in flaxseeds are broken down by bacteria in the gut into 2 estrogen-like compounds that circulate through the liver. These compounds have been proven in animal studies to help prevent breast cancer by preventing tumor growth.
2. Lignans block tumor blood supply.  Tumors need angiogenesis – new blood vessels – to supply oxygen and nutrients for growth.  Flaxseeds inhibit the growth factor needed to stimulate angiogenesis according to animal studies.
3. Lignans lower estrogen production. Lignans block aromatase, the enzyme involved in the production of estrogen.  Blocking the enzyme lowers estrogen production.  High estrogen levels have been linked to the growth of breast cancer.
4. Lignans block estrogen receptors.  Phytoestrogens like lignans have been estimated to be hundreds of times weaker than human estrogen.  But these plant estrogens dock on estrogen receptors and prevent the activity of stronger cancer stimulating human estrogens and environmental or xenoestrogens.  In that way their effect is similar to the cancer drug Tamoxifen.
5. Lignans help generate more protective estrogens. Estrogen is broken down in the liver into three different metabolites.  Two of those metabolites are linked to the growth of breast cancer cells.  But the third type – 2-OH estrone – does not stimulate cancer growth and is considered protective.  Lignans influence how the liver breaks down estrogen and encourages more of the protective 2-OH estrone and less of the other cancer producing metabolites.
6. Flaxseeds lower the risk of metastasis.  Flaxseeds may substantially decrease cases of metastasis.  In one animal study, a high flaxseed diet reduced the incidence of metastasis by 82% compared to the control group.

An earlier meta-analysis showed that flaxseed can prevent and kill breast cancer.  It cited observational studies suggesting the consumption of flaxseed may:

• Decrease risk of primary breast cancer by 18%
• Improve mental health of breast cancer patients by 76%
• Lower mortality among breast cancer patients by 32%

Adding cancer-protective flaxseed to your diet is easy.

Many of the studies show just 25 grams (2.5 tablespoons) per day is effective. Studies also show that up to 40 grams per day are safe in postmenopausal women.

Choose either golden or brown flaxseeds but make sure they’re organic to avoid agrochemical laden varieites.

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Grind the seeds in a coffee bean grinder.  But ground flax will go rancid so grind only a week’s worth and store it in an airtight container in the refrigerator or freezer.

Add 1 or 2 tablespoons to cereals, smoothies, yogurt or salads. You can also add it to baked breads and muffins. Aim for 2 to 4 tablespoons per day but work up to that gradually so that your digestive system adjusts to the high fiber content.

For more information on flaxseed, use our database on the subject above. For more information on natural substances that may be of value in the prevention and treatment of cancer. Use our Cancer database on the topic to search thousands of studies. 

Disclaimer: This article is not intended to provide medical advice, diagnosis or treatment. Views expressed here do not necessarily reflect those of GreenMedInfo or its staff.