Why Is My Poop Red? Understanding the Causes and When to Seek Medical Attention

Red stool can be alarming and confusing, particularly if it is not something you have experienced before. It is natural to feel anxious or even embarrassed about seeking medical attention for this kind of problem. However, understanding why your poop is red and when to seek medical attention can help you make informed decisions about your health. In this blog post, we will explore the various causes of red stool, including foods, medical conditions, and medications, as well as when you should seek immediate medical attention. By the end of this post, you will have a better understanding of what may be causing your red stool and how to respond accordingly.


Have you ever looked down after using the bathroom, only to discover your poop is a strange shade of red? Don’t panic just yet – there are several potential explanations for this phenomenon.

Red stool can be alarming and may cause concern, but it’s important to understand that not all causes of red poop are serious. In fact, some cases may be nothing more than a result of diet or lifestyle factors.

However, in some instances, red stool can be an indication of an underlying medical condition or illness that requires prompt attention from a healthcare provider.

In this blog post, we will explore the various causes of red stool, including both benign and potentially serious conditions. We will also cover when individuals should seek medical attention if they experience red stool, and what to expect during a medical evaluation.

So if you’ve ever wondered “why is my poop red,” keep reading to learn more about this common concern.

Causes of Red Stool

Foods and Drinks That Can Cause Red Stool

Eating foods that are rich in color can make your stool look different than usual. One common culprit of red poop is beets. These root vegetables contain pigments called betalains that can cause a reddish-purple hue in your stool.

Cranberries, which are a popular ingredient in juices and sauces, can also turn your stool red. Similar to beets, cranberries contain pigments that pass through your digestive system unchanged, resulting in a reddish tint.

Tomatoes, especially when eaten in large quantities or in tomato-based products like pasta sauce or ketchup, can also give your poop a reddish color. This is because tomatoes contain lycopene, a pigment that can survive the digestion process.

Red food coloring, which is often added to candies, cereals, and other processed foods, can also cause your stool to be red. This type of food dye is not absorbed by your body and passes through your digestive system unchanged.

While seeing red in the toilet bowl can be alarming, it’s important to remember that in most cases, there’s no need to worry. However, if you experience other symptoms such as abdominal pain, diarrhea, or vomiting, it’s best to consult with your doctor to rule out any underlying medical conditions.

Medical Conditions That Can Cause Red Stool

Medical Conditions That Can Cause Red Stool

Red stool can be a sign of various medical conditions, including some serious ones. Here are four of the most common medical conditions that can cause red stool:

1. Colon Cancer

Colon cancer occurs when abnormal cells grow and invade the lining of the colon or rectum. Although colon cancer often starts with no symptoms, red stool can sometimes be an early warning sign. The color of the stool may depend on the location of the cancer in the colon. For example, if the cancer is located in the right side of the colon, the stool may appear dark red or maroon.

2. Ulcerative Colitis

Ulcerative colitis is a chronic inflammatory bowel disease that affects the lining of the large intestine (colon) and rectum. It can cause abdominal pain, diarrhea, and bloody stools. Ulcerative colitis typically develops gradually and can lead to severe complications if left untreated.

3. Crohn’s Disease

Crohn’s disease is another type of inflammatory bowel disease that can cause red stool. It causes inflammation of the digestive tract, which can lead to abdominal pain, diarrhea, and bleeding. Crohn’s disease can occur anywhere in the digestive tract, from the mouth to the anus.

4. Diverticulitis

Diverticulitis is a condition where small, bulging pouches (diverticula) in the lining of the intestine become inflamed or infected. Symptoms can include abdominal pain, fever, nausea, and changes in bowel habits, including red stool.

It’s important to note that red stool does not always mean cancer or other serious medical conditions. However, any unexplained change in stool color should be evaluated by a healthcare provider to determine the underlying cause.

Medications That Can Cause Red Stool

Medications are supposed to help us feel better, but sometimes they can have unexpected side effects. If you’ve noticed that your stool is red and you’re taking certain medications, it’s possible that your medication is to blame.


Aspirin is a common pain reliever and blood thinner, but it can also cause red stool. The red color comes from the same compounds in aspirin that make it effective at thinning the blood. If you’re taking aspirin and notice red stool, it’s usually nothing to worry about. However, if you also notice other symptoms like stomach pain or bleeding, you should contact your doctor right away.


Ibuprofen is another pain reliever that can cause red stool. Like aspirin, it works by thinning the blood and can cause small amounts of bleeding in the digestive tract. If you’re taking ibuprofen and notice red stool, it’s important to keep an eye on it and talk to your doctor if you notice any other concerning symptoms.


Warfarin is a blood thinner used to prevent blood clots. As with other blood thinners, it can cause small amounts of bleeding in the digestive tract and lead to red or black stools. If you’re taking warfarin and notice red stool, it’s important to keep taking your medication as prescribed and talk to your doctor if you have any concerns.


Phenolphthalein is a laxative that was once commonly used to treat constipation. However, it has been linked to cancer and is no longer available in the United States. If you’ve taken phenolphthalein in the past and notice red stool, it’s important to talk to your doctor right away.

Overall, if you’re taking any medication and notice red stool, it’s important to talk to your doctor. While medications can cause red stool, it can also be a sign of more serious health conditions. Your doctor can help you determine the cause and provide appropriate treatment.

When to Seek Medical Attention

Red Flags that Require Immediate Medical Attention

If you are experiencing red stool along with any of the following symptoms, it is crucial to seek immediate medical attention. These red flags may indicate a severe underlying condition that requires prompt diagnosis and treatment.

Severe Abdominal Pain
If you experience intense abdominal pain in addition to red stool, it could be a sign of a gastrointestinal emergency. This pain can occur anywhere from the upper abdomen to the lower pelvis, and may be accompanied by other concerning symptoms such as nausea, vomiting, or diarrhea. Possible causes of severe abdominal pain with red stool include inflammatory bowel disease, ischemic colitis, or a ruptured diverticulum.

Persistent Rectal Bleeding
Although rectal bleeding is a common symptom of various conditions, persistent bleeding should never be ignored. If you consistently notice blood in your stool or on toilet paper, it could be a sign of a serious medical issue. Rectal bleeding with red stool may be caused by hemorrhoids, anal fissures, or colorectal cancer. However, there are also non-gastrointestinal causes such as bleeding disorders or infections.

A fever is generally considered to be a temperature above 100.4℉ (38℃) and can be an indication that the body is fighting off an infection. A fever combined with red stool may suggest an infectious or inflammatory process occurring within the gastrointestinal tract. Some possible causes of fever and red stool include bacterial gastroenteritis, inflammatory bowel disease, or appendicitis. Be sure to monitor your fever and seek medical attention if it persists or worsens.

Vomiting can occur for a variety of reasons, including food poisoning, viral infections, or motion sickness. However, if you experience vomiting along with red stool, it could be an indicator of a more severe condition. Vomiting with red stool could be due to a digestive system blockage, such as an intestinal obstruction or a volvulus. Alternatively, it may be due to an infectious disease, such as hepatitis A, B, or C.

In conclusion, if you experience severe abdominal pain, persistent rectal bleeding, fever, or vomiting along with red stool, it’s critical to seek immediate medical attention. These symptoms could indicate a more serious underlying issue that requires prompt diagnosis and treatment.

What to Expect During a Medical Evaluation

During a medical evaluation for red stool, there are several tests that your doctor may perform to better understand the cause of your symptoms. These may include a physical examination, fecal occult blood test, colonoscopy, and CT scan.

A physical examination is often the first step in determining the cause of red stool. Your doctor will ask you questions about your symptoms and medical history, and then examine you for any signs of bleeding or other abnormalities in your abdomen and rectum.

If your physical examination is inconclusive, your doctor may recommend a fecal occult blood test. This simple test involves collecting a small sample of your stool and testing it for hidden (occult) blood. If the test is positive, it could indicate that there is bleeding somewhere in your digestive tract.

In some cases, a colonoscopy may be necessary to further investigate the cause of your symptoms. During this procedure, a thin, flexible tube with a camera on the end is inserted into your rectum and guided through your colon. This allows your doctor to view the inside of your colon and possibly identify any abnormalities, such as polyps or tumors.

Finally, a CT scan may be recommended if your doctor suspects that there may be a more serious underlying condition causing your red stool. This non-invasive imaging test uses X-rays to produce detailed images of your internal organs and can help identify any structural abnormalities or masses in your digestive tract or elsewhere in your body.

It’s important to note that while these tests can provide valuable information, they may also come with risks and side effects. Your doctor will carefully weigh the potential benefits and drawbacks of each test before recommending them to you.

Overall, understanding what to expect during a medical evaluation for red stool can help you feel more prepared and confident as you work with your healthcare team to determine the cause of your symptoms.
After exploring the causes of red stool, it is clear that the color of your poop can reveal a lot about your health. While certain foods and medications can cause red stool, it’s important to be aware of medical conditions that may also be responsible for this symptom. If you notice persistent red stool or other symptoms like abdominal pain or rectal bleeding, it’s crucial to seek medical attention right away. Remember that early detection and treatment are key to managing many of the conditions that can cause red stool. As always, if you have any concerns about your digestive health, don’t hesitate to speak with your healthcare provider.

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