digestion
Stool Consistency (Bristol)
See how Stool Consistency (Bristol) organizes observations of stool form into a clear digestion measure.
- How it's examined
- self-reported
- Value type
- numeric
- Unit
- type
- Better when
- in range
- Plausible min
- 1
- Plausible max
- 7
- Healthy min
- 3
- Healthy max
- 5
- How often
- daily
Moved by
Interventions that trials measured against this marker, and which way it moved.No trial has measured Stool Consistency (Bristol) against an intervention in this library yet.
Via effects
Interventions targeting an effect this marker tracks. Trials did not measure the marker itself.Digestion Improvement
Gut Microbiome Health Support
Full write-up
What is it
Stool Consistency (Bristol) is a digestion measure that organizes observations of stool form into a clear, consistent way to describe bowel movements. It focuses on how stool appears and is formed, helping characterize digestive patterns through an observable body measure.
How to measure it
Measure Stool Consistency (Bristol) daily, using the same classification method each time. Record the result for that day rather than relying on memory or combining several bowel movements into one entry.
For week-to-week comparisons, keep the timing and recording routine consistent. Focus on stool consistency itself and avoid treating a single reading as representative of the whole week. A useful record is one made regularly under the same routine, with unusual days kept identifiable rather than averaged into the surrounding entries.
What good looks like
For Stool Consistency (Bristol), the target range is 3 to 5, within a broader plausible range of 1 to 7. Treat the target as personal orientation rather than a verdict on any single reading: a reading outside it is best understood in context, not in isolation.
Because this measure is tracked daily, the pattern across several readings is more informative than one result. Look for whether readings are generally moving toward, remaining within, or moving away from the target range. Comparisons are most meaningful when the assessment is made at a consistent time of day and with the same technique; changes in timing or technique can make readings less comparable.
What moves it
No intervention listed here was measured directly against Stool Consistency (Bristol). The findings therefore do not show that any intervention changed Bristol stool type itself.
These target related effects, though trials did not measure the marker directly. For Digestion Improvement, Drink Enough Water, Saccharomyces Boulardii, Astragalus, Hyaluronic Acid, Ginger, and Resveratrol were associated with improvement in related digestive outcomes. For Gut Microbiome Health Support, GABA, Vitamin B2 (Riboflavin), Yoga, Lion's Mane, Cranberry Extract, and Taurine were associated with changes related to microbiome health, although the evidence includes findings from animal studies and from people with a clinical condition. These associations should not be treated as direct evidence of movement toward or away from the target range.
The time before reassessment of related outcomes ranged from 3 days to 16 weeks across the studies. Because the outcomes varied and did not directly measure stool consistency, the results are better understood as indirect context rather than as a basis for predicting a particular Bristol type.