Loose & Watery Stool (Bristol Types 5-7): What It Means
The soft end of the Bristol Stool Scale runs from type 5 to type 7. Type 5 is soft blobs with clear-cut edges, type 6 is mushy with ragged edges, and type 7 is fully watery with no solid pieces. Types 6 and 7 are diarrhea; type 5 sits on the border and is often just a sign of low fiber.
What types 5, 6 and 7 look like
Type 5 passes very easily as soft blobs and may simply mean you need more fiber. Type 6 is mushy and falls apart, and type 7 is liquid. Types 6 and 7 often come with urgency and more frequent trips to the bathroom.
Common causes of loose stool and diarrhea
- Infections — a viral "stomach bug," or bacterial and parasitic infections from food or water.
- Food intolerances — lactose intolerance is a frequent cause; so are some sweeteners (sugar alcohols like sorbitol).
- Dietary changes — a sudden jump in fiber, caffeine, or spicy or fatty food.
- Medications — antibiotics commonly loosen stool by disturbing gut bacteria; magnesium-containing supplements and antacids can too.
- Stress and anxiety — the gut-brain connection can speed up transit.
- Digestive conditions — IBS, IBD, and others can cause recurring loose stool.
Type 5 is a little different
Type 5 isn't diarrhea. It's soft and easy to pass and frequently just reflects a diet low in fiber. Adding more fiber and keeping hydrated often nudges it back toward the formed types 3 and 4.
Watch for dehydration
Frequent watery stools lose fluid and salts. Sip water or an oral rehydration solution, and watch for signs of dehydration: strong thirst, dark urine or passing little urine, dizziness, and fatigue. Dehydration is especially risky for young children and older adults.
When to see a doctor
- Diarrhea lasting more than two days in adults (sooner in children)
- Blood in the stool, or black, tarry stool
- High fever, severe abdominal or rectal pain
- Signs of dehydration
- Recent travel abroad or a recent course of antibiotics
Track it with PoopID
When loose stool keeps coming back, a record helps you and your doctor spot the pattern. PoopID logs your Bristol type from a photo and flags trends, so recurring type 5-7 days don't go unnoticed.
- Sources:
- NIDDK — Diarrhea. niddk.nih.gov
- NHS — Diarrhoea and vomiting. nhs.uk
Frequently asked questions
Is type 5 considered diarrhea?
No. Type 5 is soft blobs that pass easily and often just signals a low-fiber diet. Types 6 and 7 are diarrhea, where stool is mushy to fully watery.
How long is it safe to wait out diarrhea?
Most short-term diarrhea in adults settles within a day or two. See a doctor if it lasts longer than two days, or sooner if there's blood, high fever, severe pain, or signs of dehydration.
Why did antibiotics give me loose stool?
Antibiotics can disturb the balance of bacteria in your gut, which often loosens stool. It usually settles after the course ends; persistent or severe diarrhea after antibiotics should be checked.
What should I drink when I have diarrhea?
Water helps, and oral rehydration solutions replace lost salts as well as fluid. Watch for dehydration, especially in young children and older adults.
This article is for general information only and is not medical advice. Consult a qualified healthcare professional about any symptom that concerns you.