Disease Proof

Can Flaxseed Oil Cause Prostate Cancer?

From the November 2006 edition of Dr. Fuhrman's Healthy Times:

There is no need for flaxseed oil when whole ground flaxseed provides more benefits and no risk. It seems that everyone you ask about flaxseed oil and prostate cancer gives a different answer. And to be fair, this is a complex subject that I will just briefly address here.

Recent studies have suggested that flaxseed oil may contribute to increased prostate cancer risk. Fortunately, there is no need to consume flaxseed oil. The best way to get omega-3 fatty acids is to consume whole flaxseed. Plus, when you consume whole flaxseed, not only do you get the best plant source of omega-3 fatty acids, you also get the richest source of dietary lignans. Lignans are converted by bacteria in the intestinal tract to horomone-like compounds called phytoestrogens that have protective effects against hormone-related cancers such as breast and prostate cancer. In fact, consuming ground flaxseed has been shown to have beneficial properties for prevention and treatment of both breast and prostate cancer.

When you consume the whole seeds, not the oil, the results show significantly reduced growth rate of cancer cells, and increased death rate of cancer cells. Another way to safely and effectively contribute to your omega-3 intake is to eat a few walnuts and lots of leafy green vegetables. When you get your essential fats from whole natural foods, you get powerful disease-fighting nutrients in the process that are not found in oils.

When it comes to omega-3 fatty acids, my recommendation is to consume about one tablespoon of ground flaxseed per day, and forgo the oil. I also recommend a small amount of DHA from a vegan source (about 200 mg per day) to assure nutritional adequacy (but not as your only source of omega-3s).

Not everyone requires DHA, but taking a small dose (not 3000 mg as some have recommended) will assure almost everyone gets an adequate amount, without the negative health risks (including suppression of immune function and risk of hemorrhagic stroke) associated with too much fish or fish oil.
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Comments (12) Read through and enter the discussion with the form at the end
Will - January 15, 2007 11:07 AM

Why does flaxseed oil cause an increase risks of cancer? What then is the different between the flaxseed oil and the flaxseed?

Paul - January 16, 2007 2:08 PM

Also consider, in 2006 a large prospective study involving 29,000 men did not find an association between ALA and prostate cancer.

http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=pubmed&cmd=Retrieve&dopt=AbstractPlus&list_uids=16783606&query_hl=8&itool=pubmed_docsum

Healthy Oil Guy - May 5, 2007 5:21 AM

The studies show conflicting relationship between high alpha linolenic acid (omega 3 fatty acid in flaxseed oil) and an increased risk of prostate cancer. Some studies show a positive correlation and some didn't. To date, there is no published studies showing flaxseed oil will cause prostate cancer.

earl Kielley - April 26, 2008 6:29 PM

I take LOTS of "ground flaxseed" ( 3 table spoons full a day), with cod liver oil, 2 grams of curcumin, and high volumes of vegetable juice(broccoli, cauliflower and cabbage), 8 oz. pomogranate juice, etc. It has kept my high grade PIN (a precursor to prostate cancer) in check for 5 yrs and 3 months. GROUND flaxseed is good stuff.

Earl Kielley - May 24, 2008 3:11 PM

About my taking "lots of ground flaxseed." Not only has this food kept my high grade PIN in check, it has ELIMINATED the high grade PIN. I mispoke in my comments above. The last biopsy had 24 needle sections too. Therefore, flaxseed in conjunction with other things mentioned above is a God sent. Walking every day and eating all organic foods are other components of my life style change. Hope this helps someone.

joe g. - March 7, 2009 5:35 PM

I HAVE BEEN TAKING 1 TABLESPOON OF FLAXSEED OIL,HIGH LIG'S FOR OVER 10 YEARS. MY PSA LEVEL IS .08. YES LESS THAN ONE. MY HDL'S ARE 88 AND MY LDL'S AT 113. I THINK I WOULD BE A GOOD CASE STUDY FOR ANY OF THESE TEST.

mike - November 13, 2009 2:25 PM

does flaxseed/oil have aeffect on estrogen levels in men?

samar - July 28, 2010 2:21 AM

what about mixing flax oil with goat yogurt?

Dustin - March 8, 2011 1:19 PM

Wow! I did not know that flax oil could be so harmful. Is it because of how it is manufactured? Why is it that flax oil is not good where as raw flaxseeds are great?

Thanks!

patrick - April 11, 2011 4:42 PM

A recient study (2009)found very little correlation between flaxseed oil and prostate cancer, the earlier studies were found to be faulty, Wiki the subject.

Knowseverything - June 17, 2012 6:03 PM

Everything you put into your body is good for you, but it is also bad for you. You need oxygen to live, and then it kills you in the end. Everything is that way. Everything.

tony fetachini - September 14, 2012 2:59 AM

Knowseverything makes a sound point

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