Many of us have experienced the embarrassment of flushing the toilet only to be left with a stubborn brown streak that refuses to disappear. Despite multiple attempts at flushing, the stain remains, leading to the inevitable reach for a brush and some cleaning supplies.
Although cleaning the toilet is not something anyone enjoys, it’s a task that occasionally needs to be done. However, if you find that you frequently leave behind a ‘mudslide’ after using the restroom, it might be an indication that there is an underlying issue with your bowel health.
An expert has highlighted that these persistent stains could point to several potential issues. Bryn DeSantis, a certified nurse practitioner specializing in digestive disorders, reveals that dietary habits can influence the appearance of such stains.

A diet high in fats can result in more fat being excreted in your stool, leading to noticeable streaks. DeSantis notes that “Fatty stools tend to be pale, loose and buoyant — they often float.” Therefore, reducing the intake of fatty foods like deep fried items might help alleviate the problem.
A sticky or mucus-laden stool could also signify digestive issues. DeSantis explains that “Sticky stool with visible mucus is very common in people with irritable bowel syndrome (IBS).” It may also indicate other conditions such as lactose intolerance, hemorrhoids, or cystic fibrosis. If you’re concerned, consulting a healthcare provider is always recommended.

If your stool appears black and tarry, this might be a more serious issue, such as internal bleeding. DeSantis explains that “Bleeding in the upper GI tract can lead to stools with a tar-like color and consistency, as well as a stronger odor.” This can be a sign of an ulcer, and seeking medical attention would be wise.
A fatty stool may also point to problems with the pancreas, particularly if your diet is not excessively fatty. DeSantis says, “People with pancreatic insufficiency don’t make enough digestive enzymes to break down fats and other essential nutrients from foods.” This could result in yellow stools that cling to the toilet bowl.

If the need to scrub the bowl occurs only occasionally, DeSantis reassures that it’s likely not a major concern. However, if it happens frequently, it might be time to consult with a doctor. They may conduct various tests, including stool and blood tests, imaging scans, and possibly a colonoscopy. A biopsy might also be taken to further investigate any potential underlying conditions.