Is my poop normal?

The Bristol Stool Chart

Developed by Dr. Ken Heaton at the University of Bristol (1997). Used worldwide by gastroenterologists.

The 7 types

• Type 1-2: Constipation — too slow transit
• Type 3-4: Ideal — normal, healthy stool
• Type 5: Lacking fiber
• Type 6-7: Diarrhea — too fast transit

What's normal?

• Frequency: 3 times/week to 3 times/day is all normal
• Most people go once or twice per day
• Type 4 (smooth snake) is the gold standard
• Your gut transit time is 12-36 hours on average

Sources: Lewis & Heaton (1997, Bristol Stool Scale), HealthPartners, Gastroenterology Journal.