Doctor's Note

For more on stool and health, check out:
Stool pH and Colon Cancer
Bulking Up on Antioxidants
Preventing Ulcerative Colitis with Diet

And check out my other videos on stool

For more context, also see my associated blog posts: Bowel Movements: The Scoop on PoopKiwi Fruit for Irritable Bowel the first monthBoosting Gut Flora Without Probiotics; and Best Treatment for Constipation.

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

To post comments or questions into our discussion board, first log into Disqus with your account or with one of the accepted social media logins. Click on Login to choose a login method. Click here for help.

  • 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? :)

  • 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”! :)

  • 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 ???

  • 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?

    • Joseph Gonzales R.D.

      Not sure about tongue coating scales, but that would be interesting. I know acupuncturists and Chinese medicine evaluates the tongue.

  • Melanie Gold

    What would it mean if a vegan like myself were to vacillate between numbers 1 and 5? I have wondered for a long time because I think of the animals in the wild who are herbivores. Don’t they all have pellet stools for the most part?

  • PJ

    I used to have the smooth sausage and occasionally #3 before switching to plant-based in 2012 and now it’s like a cow patty that sticks when flushed and leaves more skid marks than race cars at the Indy 500. I find this really annoying when I’m sharing a bathroom with someone or at a friend’s house, etc. I’m wondering it I’m getting too much fiber as I consistently come in around 100 or more grams a day based on about 3500 calories, which is because I’m very active and have an appetite to match. I tried drinking more water, but that just made it worse….I’d really like to get back to #4 but not sure what to “doo”?

    • Isa

      I know this is an old post but I’m still hoping for an answer. I have the same issue. Worse, I get cramps, bloating, diarrhea and even steatorrhea at times. This is only when I add more veggies to my diet. I love veggies but my body doesn’t seem to digest them very well. Any clue?

      • PJ

        Hi Isa-
        I’m starting to think we won’t get a response since this is an older post….question: did you ever eat animal products, and if so, were your movements better during that time?