Orange-Red Strands in Stool: Should You Be Concerned? - Surgery

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Stool mixed with substances resembling blood streaks?


Hello, doctor.
I am 168 cm tall and weigh 44 kg (I have difficulty gaining weight).
I usually have bowel movements 1 to 3 times a day.
Today, I noticed some orange-red thread-like substances mixed in with my stool, and I'm a bit worried.
I would like to ask if this is normal.
Thank you.

Bai, 20~29 year old female. Ask Date: 2019/04/27

Dr. Ke Fangxu reply Surgery


If there are no blood streaks, it is likely food residue.
It is recommended to temporarily avoid red foods such as tomatoes or chili peppers.
You may also consider a fecal occult blood test to differentiate whether it is blood.
If red discoloration persists, it is advisable to consult a physician for further evaluation.

Reply Date: 2019/04/27

More Info


When you notice orange-red strands in your stool, it can understandably cause concern. However, it's important to approach this situation with a clear understanding of potential causes and implications. Based on the information provided, there are several factors to consider.

Firstly, the color and consistency of stool can be influenced significantly by dietary choices. Foods that are rich in pigments, such as carrots, tomatoes, red peppers, and certain fruits like watermelon and dragon fruit, can impart color to your stool. If you recently consumed a large quantity of these foods, it is quite possible that the orange-red strands you observed are simply remnants of undigested food rather than a sign of a medical issue. In your case, if you have been eating foods high in carotenoids (like carrots), this could explain the coloration.

Secondly, the presence of orange-red strands does not automatically indicate the presence of blood. Blood in the stool typically appears as bright red or dark, tarry black, depending on where the bleeding is occurring in the gastrointestinal tract. If the strands you are seeing are soft and sticky, they are more likely to be food particles rather than blood. However, if you are concerned about the possibility of blood, it is advisable to conduct a stool test for occult blood, which can help determine if there is any hidden bleeding.

In terms of your overall health, you mentioned that you have a healthy weight and regular bowel movements, which is a positive sign. The frequency of your bowel movements (1-3 times a day) falls within the normal range. Additionally, if you are not experiencing any discomfort, pain, or other gastrointestinal symptoms, this further suggests that there may not be a serious underlying issue.

However, given your family history of colorectal cancer, it is prudent to remain vigilant about any changes in your bowel habits or stool characteristics. While having a relative with colorectal cancer can increase your risk, it is essential to consider other factors such as age, lifestyle, and personal health history. Regular screenings, such as colonoscopies, are recommended based on individual risk factors, and it is generally advised to start these screenings at age 45 or earlier if there is a family history of colorectal cancer.

If the orange-red strands persist or if you notice any other concerning symptoms, such as changes in bowel habits, unexplained weight loss, or abdominal pain, it would be wise to consult a healthcare professional. They may recommend further evaluation, including a physical examination and possibly imaging or endoscopic procedures, to rule out any potential issues.

In summary, while the presence of orange-red strands in your stool can be alarming, it is often related to dietary factors rather than a serious health concern. Monitoring your diet, observing any changes in your stool, and consulting with a healthcare provider if symptoms persist will help ensure your gastrointestinal health remains on track. Remember, proactive health management is key, especially with a family history of gastrointestinal issues.

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