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 stool. Also, there are 1,686 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: Bowel Movements: The Scoop on PoopKiwi Fruit for Irritable Bowel Syndrome, the first month, Boosting Gut Flora Without Probiotics, and Best Treatment for Constipation

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  • adamholt

    Nice… by the way, I’m happy to have come across this site. I’m a primary care doctor in Wisconsin and likely will be recommending certain things to patients. Thanks a lot!

    • Michael Greger M.D.

      What?! No laminated Bristol Scale in your white coat pocket? :)

  • Benjamin Stone

    My 7 year old loves this video. He is asking all his friends where they are on the Bristol Stool Scale!

  • wmelillo

    I look forward to your daily videos. Today’s video has made me a real fan. Informative and funny! You are great.

    • Michael Greger M.D.

      You’re so sweet to take the time to leave a note. Because even the scientific nutrition literature can be such dry technobabble, I’m always trying to find ways to insert some humor or something just so the material’s not so dense. Sometimes I’m more successful than others, but I have been looking forward to posting the one this morning. Whole new meaning to the term “brain food”! :)

  • Karen Hyde

    I love this one! Your delivery is pitched perfectly.

    • Michael Greger M.D.

      Thank you Karen, it wasn’t easy to do it with a straight face!

  • Toxins

    Nasty to visualize but informative! Amazing website, you put alot of work in these videos

  • Beachwalker

    I think I’m glad looking at this Bristol Scale. My stools have changed a bit. And according to this scale, I’m a “Type 4″. I don’t eat meat. Maybe once in a while I have fish. I was still sometimes a Type 3, but the past month I’ve only been a 4. So I hope that doesn’t mean anything bad. I don’t feel blocked up, or blotted, So the thinner type 4 is where I’m at now. I’ve been a vegetarian for several years and am pre-menopausal.

  • dconlisk

    I have created an iPhone application which brings the Bristol Stool Scale to your iPhone. It’s easy to use, and easy to understand. Over time it creates a graph of your stool quality which you can share with your health professional. This could help in monitoring the effects of lifestyle or drug changes, medical treatments, etc, over time. The app also includes links to some online resources and a brief explanation of each type of stool.

    If you’d like to know more have a look at the website here:



    • abeleehane

      Do you use the iPhone as a stool penetrometor ???

  • Tan Truong

    dconlisk, I thought you were kidding.

    I don’t own an iPhone, but I’ll be sure to get the word out.

    Sausage stoolers unite!

  • Dz

    Vegan Poop Power!!! Lol!!!
    Great video.

  • Michael Greger M.D.

    Also be sure to check out my associated blog post Bowel Movements: The Scoop on Poop!

  • PandaB

    One more reason to celebrate the year of the snake!

  • tavit

    my stool fits into type 4 fortunately but why is it little bit greenish sometimes?

    • WamaJK

      I strive for the green stools, because that’s how I know I’ve eaten enough greens. Embrace your green sausages!

      • Tommasina

        too funny! :D

  • abeleehane

    What a “crappy” video ! :-)

    • Sebastian Tristan

      It’s full of sh*t.

  • Dt. Kirk McAnsh, D.C.
  • melliforte

    Dr. G, thanks for teaching us about the Bristol scale. My life has been profoundly changed by this knowledge, not least because it helped me realize it isn’t neurotic (after a lifetime of reading and hearing doctors opine that it is neurotic for patients to dwell or even spend any time on the topic) to regularly observe my doo and use it as a clue (one of many) to how I’m doing overall!

    Might there be an analogous scale for the other end of the tract, namely, tongue coatings?