Bristol Stool Test

Bristol stool scale

I know it’s not proper dinner conversation, but since we are all plagued by this problem, we have to discuss it.   I wish I would have known to look at my own toilet bowel to see what it would reveal about my health.   I’ve cycled thru being constipated to severe diarrhea for over 40 years.  I never realized that the 2 ends of the spectrum – being from constipation to diarrhea was basically from the same cause – my gut bacteria.  Your gut ecology is imbalanced by bacterial overgrowth.  Everyone is different.    Next post, I’ll discuss fiber and why some of it wrecking your gut.

From Wikipedia, the free encyclopedia

Bristol stool chart.svg

The Bristol stool scale or Bristol stool chart is a medical aid designed to classify the form of human feces into seven categories. Sometimes referred to in the UK as the “Meyers scale”,[1] it was developed by Dr. Ken Heaton at the University of Bristol and was first published in the Scandinavian Journal of Gastroenterology in 1997.[2] The authors of that paper concluded that the form of the stool is a useful surrogate measure of colon transit time. That conclusion has since been challenged as having limited validity, and only in types 1 and 2 when the subject is not constipated.[3] However, it remains in use as a research tool to evaluate the effectiveness of treatments for various diseases of the bowel, as well as a clinical communication aid.

The seven types of stool are:

  • Type 1: Separate hard lumps, like nuts (hard to pass)
  • Type 2: Sausage-shaped, but lumpy
  • Type 3: Like a sausage but with cracks on its surface
  • Type 4: Like a sausage or snake, smooth and soft
  • Type 5: Soft blobs with clear cut edges (passed easily)
  • Type 6: Fluffy pieces with ragged edges, a mushy stool
  • Type 7: Watery, no solid pieces. Entirely liquid

Types 1–2 indicate constipation, with 3 and 4 being the ideal stools (especially the latter), as they are easy to defecate while not containing any excess liquid, and 5, 6 and 7 tending towards diarrhea.

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