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Best Fruits For Cancer Prevention

Clinical trials exploring the use of black raspberries to treat cancer and precancerous lesions.

September 7, 2010 |
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Supplementary Info

Sources Cited


Image thanks to Jack Letourneau.


The best fruits for cancer prevention in general are probably berries, which are considered ideal cancer preventive agents. In fact there are now seven clinical trials underway to treat cancer and precancerous lesions with black raspberries, for example… by any means necessary, even if they have to stick them up patients’ butts.
The preliminary results from that study are actually pretty amazing, though. After nine months of treatment, half of their rectal polyps disappeared, Normally you have to go in and cut them out, but the berries made them just totally regress back into the body. But, don’t try this at home. They were stuffing so many raspberries up there 20% of the patients developed, rectal fissures. I will spare you the pictures. Therefore, the use of black raspberry suppositories for future trials is questionable.
I recommend just eating them—let them take the long way ‘round.

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.

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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 cancer. Also, there are 1,686 other subjects covered in the rest of my videos--please feel free to explore them as well!

For more context, check out my associated blog posts: Preventing and Treating Kidney Failure With Diet and Raspberries Reverse Precancerous Lesions

If you haven't yet, you can subscribe to my videos for free by clicking here.

  • Eric Needs


    • Michael Greger M.D.


  • 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 cancer. Also, there are 1,449 other subjects covered in the rest of my videos–please feel free to explore them as well!

  • blrobbins9

    What about adding black raspberry seed oil to salads?

  • Tan Truong

    LOL @ “Let them take the long way around”.

    Excellent video. Black raspberry smoothies for the win.

  • artman79

    what about HPV related warts and anal cancer? I wonder by the time it travels through your digestive tract, how much nutrients are still there from the berries we eat?

    • Toxins

      Just a comment, but the nutrients will be in your bloodstream at that point and will have dispersed throughout your entire body. The large intestine, the last stop before exiting your body, does not absorb nutrients, but water. But even if it did absorb the nutrients, it wouldn’t matter because what nourishes it is not the food itself, but the blood that delivers the nutrients from the food.

  • bk

    Just wondering if the supplments oxidize and how long it would take for that to happen

  • JeanMarie

    Dr. Gregor, you’re a hoot!!! Education and entertainment at the same time!

    • Valnaples

      Yeah, I was cracking up: “Believe me, I will NOT try this at home, Doc!!!!!”  ewwwww!!! LOLZ !

  • James Rivet

    one of my favorite videos!

  • beccadoggie10

    I eat black raspberries as often as possible, because they are full of calcium and fiber, necessary ingredients when one has osteoporosis.

  • Mark Kislich Is

    Hey Doc, are Blackberries as effective?



  • Eddie Bridgett Jr

    The scenic route.