Bristol type 5: soft blobs with clear-cut edges

Short answer: type 5 is soft, formed blobs that pass easily. It’s one step looser than the healthy type 4 and usually means poop moved through a little quicker than usual. Most of the time it’s a one-off with an obvious reason. When it isn’t, a few days of logs usually show the pattern. (Part of the Bristol stool chart.)

What does Bristol type 5 look like?

The NHS England chart says “soft blobs with clear-cut edges”. The pieces are separate but hold their shape, and they come out easily. If the edges are ragged and the pieces are mushy, that’s type 6.

Why is my poop soft blobs?

On the Bristol scale, softer poop generally means faster transit. In the 1997 Lewis and Heaton study, when volunteers took the laxative senna their gut transit sped up and stool form moved toward the loose end. Type 5 is a mild version of that.

Everyday reasons, drawn from NIDDK and NHS lists of causes of looser stools:

• a rich or fatty meal
• alcohol (more in alcohol and poop)
• sugar alcohols like sorbitol, mannitol and xylitol in sugar-free sweets and gum (NIDDK)
• lactose, if you don’t digest it well (NIDDK)
• medicines, including antibiotics and magnesium antacids (NIDDK)
• anxiety (NHS)
• a mild stomach bug starting or ending

What you might notice, what it can mean, when to get checked

What you might notice	What it can mean	When to get checked
One type 5 the morning after a big night out	Rich food or alcohol	No action needed
Type 5 on days you have milky coffee or ice cream	Possibly lactose	Try a short, logged break; see dairy and poop
Type 5 after starting a new medicine	Possible side effect (NIDDK)	Check the leaflet; ask a pharmacist or GP before stopping
Type 5 most days for 3 weeks, when that’s not your normal	A change in bowel habit	See a GP (NHS)
Type 5 plus blood, weight loss or a tummy lump	Needs checking	See a GP
Type 5 turning watery, several times a day	Diarrhea	See type 7 for fluids and when to get help

How can I find out what’s causing my type 5?

Try this simple 2-week approach:

1. Week 1: just log. Every meal and every poop, no changes. Tag meals with likely suspects like dairy, caffeine, alcohol or sugar-free sweets.
2. Look for the lag. Note what you ate in the day or so before each type 5. Our piece on how long food takes to affect poop explains why timing varies.
3. Week 2: change one thing. If dairy keeps showing up, cut back on it for a week and keep logging.
4. Compare. Fewer 5s? You may have found a trigger. No change? Bring both weeks to a GP or dietitian rather than cutting more foods.

What might a type 5 log look like?

Mon 07:40  Poop: Type 4
Mon 15:00  Meal: latte, sugar-free mints [tags: dairy]
Tue 07:30  Poop: Type 5
Tue 15:10  Meal: latte [tags: dairy, caffeine]
Wed 07:35  Poop: Type 5
Thu 08:00  Meal: black coffee [tags: caffeine]
Paper note: swapped afternoon latte and mints for black coffee from Thu
Fri 07:45  Poop: Type 4
Sat 08:10  Poop: Type 4

Two suspects showed up together here: milk and sugar-free mints. Swapping both helped, but you can’t tell which one mattered. Next step: bring one back at a time.

Type 5 myths vs facts

Myth	Fact
Type 5 means diarrhea	NIDDK defines diarrhea as loose, watery stools three or more times a day or more often than normal for you. Type 5 is still formed.
Soft poop means you need less fiber	Not necessarily. Change one thing at a time and log the effect.
Sugar-free means gut-friendly	Sugar alcohols can cause diarrhea in some people (NIDDK).
If it’s soft, stop all dairy and gluten	Cutting lots of foods at once makes the cause harder to find. Test one at a time, and talk to a doctor before cutting gluten if you might be tested for celiac disease.

How do I describe type 5 to a doctor?

Be specific: “Since early October I’ve had type 5 most mornings, three or four times a day. It used to be type 4 once a day. No blood. I’ve logged meals for two weeks.” That covers the change, the timeline and what you’ve ruled out. More wording ideas in what to tell your GP about bowel changes.

Type 5 trigger hunt

• Log every meal and poop for 7 days
• Tag dairy, caffeine, alcohol and sugar-free sweets
• Check the day or so before each type 5
• Change one thing for week 2
• See a GP if it lasts 3 weeks or any red flag appears

Where does PoopAI fit?

PoopAI helps with exactly this kind of trigger hunt. Log meals by photo or text, tag them with triggers like dairy, gluten, FODMAPs and caffeine, and log each poop as Bristol type 1 to 7. The weekly report and trend charts help you see whether type 5s cluster after certain tags. It doesn’t diagnose, and it doesn’t log symptoms like pain.

The bottom line

Type 5 is usually a mild, passing wobble. If it sticks around, log a couple of weeks, test one change at a time, and see a GP if it’s a lasting change for you or comes with any red flag. Next: type 6 or the food intolerance guide.

Editorial note: Written by The FixMyGut team using the NHS, NIDDK and peer-reviewed sources listed below. It’s general information, not a diagnosis. Facts checked against those sources on November 5, 2026.