Blueberries and Colon Cancer

Posted by Heinz-Josef Lenz, MD on February 17th, 2010

Recent studies from Swedish investigators suggest that blueberries may prevent colon cancer development. They suggest that blueberries should be eaten with probiotic yoghurt to further improve the benefit.

We have known for many years that antioxidants may have protective effects, but no prospective studies have validated these findings. There is a lot of data showing that colored fruits and vegetables affect cancer development, but so far we have not seen trials proving their effect.

However we know that ongoing oxidative stress is a major part of developing colon cancer. Antioxidants can help the normal cells to defend against oxidative stress. We had big hopes for selenium however it did not show the benefit we all hoped for. However we have learned in recent years that the environment in the colon may be very important.

The presence of good bacteria (probiotics) not only help with your bowel movements and regularity (ACTIVA), but these bacteria may influence the way cancer develops. The interaction of the colon mucosa (linings), bacteria, and potential agents which can cause cancer are very important.

We have started to recommend probiotic yoghurt to all our patients because of this impact on the gastrointestinal tract. How the antioxidants and bacteria interact is unclear but these data suggest that we can change the environment with bacteria and supplements and reduce the risk of colon cancer.

We are a long way to better understanding of how to further reduce colon cancer risk successfully. The exciting new data also suggest that these good bacteria may also impact how cancer behaves if it develops.

EAT your yoghurt with blueberries.

6 Responses to “Blueberries and Colon Cancer”

  1. February 17, 2010 at 10:48 am, Kait said:

    Very interesting! I wrote a blog post about this subject not too long ago: http://www.colorectal-cancer.ca/blog/?p=383

    Thank you for sharing this on Twitter.

  2. February 17, 2010 at 11:22 am, Heinz-Josef Lenz said:

    thanks for sharing this wonderful posts with our readers. Heinz-Josef Lenz

  3. February 17, 2010 at 1:37 pm, Laura Morefield said:

    Thanks for the helpful information, Dr. Lenz.

    I’ve been taking both for awhile on a 3-4 x per week basis. Are you recommending this more frequently?

    Also, I usse Kefir instead of ACTIVIA…any significant difference?

  4. March 13, 2010 at 8:12 pm, jodi Sax said:

    Hmmmm, probiotics never mentioned to me, I’m quite sure I inquired and suggestion was dismissed….Same with other diet recommendations. FYI.

  5. March 13, 2010 at 11:23 pm, Heinz Josef Lenz said:

    Jodi you have been on my blogs forever you just dont remember since your thoughts were occupied hope you are happy with your new oncologists and he can give you what you need

  6. March 30, 2010 at 5:12 pm, Gary Gardner said:

    Hi, my partner has been eating Blueberries every day since he was diagnosed with Colon Ca. Since we heard about the benefits of probiotic yoghurt and blueberries he has been having this daily, now he adds in some granola.
    Fingers crossed, but he does get comments when he has his blood tests how red and oxygenated his blood is so we consider this to be a positive sign.
    Just had surgery on Liver, primary was removed last Sept in the Colon, all very small lesions and tumours, weight increasing steadily all through first batch of Chemo, so good to hear so many developments in this area, keep going

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