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Exercise & Breast Cancer

How many minutes a day of moderately intense exercise is necessary to significantly decrease breast cancer risk?

April 13, 2011 |
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Supplementary Info

Sources Cited

T. M. Peters, A. Schatzkin, G. L. Gierach, S. C. Moore, J. V. Lacey Jr, N. J. Wareham, U. Ekelund, A. R. Hollenbeck, and M. F. Leitzmann. Physical activity and postmenopausal breast cancer risk in the NIH-AARP diet and health study. Cancer Epidemiol Biomarkers Prev., 18(1):289-296, 2009.

Acknowledgements

Image thanks to URLgoeshere.

Transcript

We’ve known that physical activity, can reduce breast cancer risk, and appears to work especially well at preventing estrogen-receptor negative tumors—the hardest one’s to treat but only last year. did we figure out how much exercise was needed. We’ve known that light exercise doesn’t work—like a leisurely stroll appears useless for preventing breast cancer, and we’ve know that fewer than 10 minutes a day of even good exercise doesn’t work either. How many minutes of moderately intense exercise—hiking, biking, swimming, aerobics—or even just fast walking, does one need, on average, every day to significantly decrease breast cancer risk? Less than 10 minute doesn’t work, but how about full 10? 15? 30? 45? A full hour a day?
Well, It’s not 10. It’s not 45. And it’s not 15. We need an hour of exercise every day. Darwin was right: it is survival of the fittest, so let’s get fit!

To see any graphs, charts, graphics, images, and quotes to which Dr. Greger may be referring watch the above video. This is just an approximation of the audio contributed by veganmontreal.

To help out on the site please email volunteer@nutritionfacts.org

Dr. Michael Greger

Doctor's Note

Please feel free to post any ask-the-doctor type questions here in the comments section and I’d be happy to try to answer them. And check out the other videos on breast cancer. Also, there are 1,449 other subjects covered in the rest of my videos--please feel free to explore them as well!

For some context, please check out my associated blog posts: Breast Cancer and Diet and  Treadmill Desks: Stand Up For Health

  • http://nutritionfacts.org/members/mgreger/ Michael Greger M.D.

    Please feel free to post any ask-the-doctor type questions here in the comments section and I’d be happy to try to answer them. And check out the other videos on breast cancer. Also, there are 1,449 other subjects covered in the rest of my videos–please feel free to explore them as well!

  • http://nutritionfacts.org/members/sonarlily/ sonarlily

    What are my choices for moderately intense exercise?

    • http://nutritionfacts.org/members/anya/ Anya

      As mentioned in the video, fast-walking, hiking, & biking are all forms of moderately intense activity, as well as light jogging and leisurely swimming. A good indication that you are working out at a moderate level is a noticeable increase in heart & breathing rates – you should be able to talk, but you shouldn’t be able to sing. Regular exercise is definitely beneficial for both the body and mind!(see http://nutritionfacts.org/videos/reversing-cognitive-decline

  • Michael Greger M.D.

    Also be sure to check out my associated blog post Breast Cancer and Diet!

  • http://www.facebook.com/profile.php?id=1150791490 Jude Richards Eastman

    shoot–bad news for me. Will try to do better! As a teacher, I often work till 7:00 pm. Breast cancer is in my maternal side-mom (passed form it) her sister and her daughter (my cousin) -survived, but cousin ended up with liver cancer later that took her. Made the switch to plant based eating—Food for thought here….Maybe time to actually use my elliptical machine!

  • http://www.facebook.com/diane.krstulovich Diane Krstulovich

    Surprise, surprise…I’ve never heard anybody else say that – ever! (except maybe Ruth Heidrich) Sounds like it’s time for a major lifestyle change!

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