Bloody or tarry stools Information | Mount Sinai

Stools – bloody; Melena; Stools – black or tarry; Upper gastrointestinal bleeding; Melenic stools

Black or tarry stools with a foul smell are a sign of a problem in the upper digestive tract. It most often indicates that there is bleeding in the stomach, small intestine, or right side of the colon.

The term melena is used to describe this finding.

The process of digesting food is accomplished by many organs in the body. Food is pushed by the esophagus into the stomach. The stomach mixes the food and begins the breakdown of proteins. The stomach propels the food then into the small intestine. The small intestine further digests food and begins the absorption of nutrients. Secretions from the pancreas in the small intestine help neutralize the acid in the intestine to provide a proper environment for the enzymes to function. Bile from the gallbladder and liver emulsify fat and enhance the absorption of fatty acids. The large intestine temporarily stores and concentrates the remainder until it is passed out as waste from the body.

Peptic ulcers may lead to emergency situations. Severe abdominal pain with or without evidence of bleeding may indicate a perforation of the ulcer through the stomach or duodenum. Vomiting of a substance that resembles coffee grounds, or the presence of black tarry stools, may indicate serious bleeding.

A Mallory-Weiss tear results from prolonged and forceful vomiting, coughing or convulsions. Typically the mucous membrane at the junction of the esophagus and the stomach develops lacerations which bleed, evident by bright red blood in vomitus, or bloody stools. It may occur as a result of excessive alcohol ingestion. This is an acute condition which usually resolves within 10 days without special treatment.

Capsule endoscopy is a test procedure in which a camera inside a small capsule takes pictures of the lining of your digestive system. The capsule is about the size of a large vitamin pill. After swallowing it, the capsule travels the length of your digestive system and transmits images to a wearable recorder.

Considerations

Eating black licorice, blueberries, blood sausage or taking iron pills, activated charcoal, or medicines that contain bismuth (such as Pepto-Bismol), can also cause black stools. Beets and foods with red coloring can sometimes make stools appear reddish. In all these cases, your doctor can test the stool with a chemical to rule out the presence of blood.

Bleeding in the esophagus or stomach (such as with peptic ulcer disease) can also cause you to vomit blood.

Causes

The color of the blood in the stools can indicate the source of bleeding.

• Black or tarry stools may be due to bleeding in the upper part of the GI (gastrointestinal) tract, such as the esophagus, stomach, or the first part of the small intestine. In this case, blood is darker because it gets digested on its way through the GI tract.
• Red or fresh blood in the stools (rectal bleeding), is a sign of bleeding from the lower GI tract (rectum and anus).

Peptic ulcers are the most common cause of acute upper GI bleeding. Black and tarry stools may also occur due to:

• Abnormal blood vessels in the esophagus, stomach, or duodenum
• A tear in the esophagus from violent vomiting (Mallory-Weiss tear)
• Blood supply being cut off to part of the intestines
• Inflammation of the stomach lining (gastritis)
• Trauma or foreign body
• Widened, overgrown veins (called varices) in the esophagus and stomach, commonly caused by liver cirrhosis
• Cancer of the esophagus, stomach, duodenum, or ampulla of Vater

When to Contact a Medical Professional

Contact your health care provider right away if:

• You notice blood or changes in the color of your stool
• You vomit blood
• You feel dizzy or lightheaded

In children, a small amount of blood in the stool is most often not serious. The most common cause is constipation. You should still tell your child’s provider if you notice this problem.

What to Expect at Your Office Visit

Your provider will take a medical history and perform a physical exam. The exam will focus on your abdomen.

You may be asked the following questions:

• Are you taking blood thinners, such as aspirin, warfarin, Eliquis, Pradaxa, Xarelto, or clopidogrel, or similar medicines? Are you taking an NSAID, such as ibuprofen or naproxen?
• Have you had any trauma or swallowed a foreign object accidentally?
• Have you eaten black licorice, lead, Pepto-Bismol, or blueberries?
• Have you had more than one episode of blood in your stool? Is every stool this way?
• Have you lost any weight recently?
• Is there blood on the toilet paper only?
• What color is the stool?
• When did the problem develop?
• What other symptoms are present (abdominal pain, vomiting blood, bloating, excessive gas, diarrhea, or fever)? 

You may need to have one or more tests to look for the cause:

• Angiography
• Bleeding scan (nuclear medicine)
• Blood studies, including a complete blood count (CBC) and differential, serum chemistries, clotting studies
• Colonoscopy
• Esophagogastroduodenoscopy or EGD
• Stool culture
• Tests for the presence of Helicobacter pylori infection
• Capsule endoscopy (a pill with a built in camera that takes a video of the small intestine)
• Double balloon enteroscopy (a scope that can reach the parts of the small intestine that are not able to be reached with EGD or colonoscopy)

Severe cases of bleeding that cause excessive blood loss and a drop in blood pressure may require surgery or hospitalization.

Chaptini L, Peikin S. Gastrointestinal bleeding. In: Parrillo JE, Dellinger RP, eds. Critical Care Medicine: Principles of Diagnosis and Management in the Adult. 5th ed. Philadelphia, PA: Elsevier; 2019:chap 72.

DeGeorge LM, Nable JV. Gastrointestinal bleeding. In: Walls RM, ed. Rosen’s Emergency Medicine: Concepts and Clinical Practice. 10th ed. Philadelphia, PA: Elsevier; 2023:chap 26.

Kovacs TO, Jensen DM. Gastrointestinal hemorrhage. In: Goldman L, Schafer AI, eds. Goldman-Cecil Medicine. 26th ed. Philadelphia, PA: Elsevier; 2020:chap 126.

Savides TJ, Jensen DM. Gastrointestinal bleeding. In: Feldman M, Friedman LS, Brandt LJ, eds. Sleisenger and Fordtran’s Gastrointestinal and Liver Disease. 11th ed. Philadelphia, PA: Elsevier; 2021:chap 20.

Last reviewed on: 5/4/2022

Reviewed by: Michael M. Phillips, MD, Emeritus Professor of Medicine, The George Washington University School of Medicine, Washington, DC. Also reviewed by David C. Dugdale, MD, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team.

Gastritis Information | Mount Sinai

Gastritis occurs when the lining of the stomach becomes inflamed or swollen.

Gastritis may last for only a short time (acute gastritis) or it may linger for months to years (chronic gastritis).

The esophagus, stomach, large and small intestine, aided by the liver, gallbladder and pancreas convert the nutritive components of food into energy and break down the non-nutritive components into waste to be excreted.

The stomach connects the esophagus to the small intestines and is where the majority of food digestion takes place.

Causes

The most common causes of gastritis are:

• Certain medicines, such as aspirin, ibuprofen, or naproxen and other similar drugs
• Heavy alcohol drinking
• Infection of the stomach with a bacteria called Helicobacter pylori

Less common causes are:

• Autoimmune disorders (such as pernicious anemia)
• Backflow of bile into the stomach (bile reflux)
• Cocaine use
• Eating or drinking caustic or corrosive substances (such as poisons)
• Extreme stress
• Viral infection, such as cytomegalovirus and herpes simplex virus (more often occurs in people with a weak immune system)

Trauma or a severe, sudden illness such as major surgery, kidney failure, or being placed on a breathing machine may cause gastritis.

Symptoms

Many people with gastritis do not have any symptoms.

Symptoms you may notice are:

• Loss of appetite
• Nausea and vomiting
• Pain in the upper part of the belly or abdomen

If gastritis is causing bleeding from the lining of the stomach, symptoms may include:

• Black stools
• Vomiting blood or coffee-ground-like material

Exams and Tests

Tests that may be needed are:

• Complete blood count (CBC) to check for anemia or low blood count
• Examination of the stomach with an endoscope (esophagogastroduodenoscopy or EGD) with biopsy of stomach lining
• H pylori tests (breath test or stool test)
• Stool test to check for small amounts of blood in the stools, which may be a sign of bleeding in the stomach

Treatment

Treatment depends on what is causing the problem. Some of the causes will go away over time.

You may need to stop taking aspirin, ibuprofen, naproxen, or other medicines that may be causing gastritis. Always talk to your health care provider before stopping any medicine.

You may use other over-the-counter and prescription drugs that decrease the amount of acid in the stomach, such as:

• Antacids
• h3 antagonists: famotidine (Pepcid), cimetidine (Tagamet), and nizatidine (Axid)
• Proton pump inhibitors (PPIs): omeprazole (Prilosec), esomeprazole (Nexium), Iansoprazole (Prevacid), rabeprazole (AcipHex), and pantoprazole (Protonix)

Antibiotics may be used to treat gastritis caused by infection with Helicobacter pylori bacteria.

Outlook (Prognosis)

The outlook depends on the cause, but is often very good.

Possible Complications

Blood loss and increased risk for gastric cancer can occur.

When to Contact a Medical Professional

Contact your provider if you develop:

• Pain in the upper part of the belly or abdomen that does not go away
• Black or tarry stools
• Vomiting blood or coffee-ground-like material

Prevention

Avoid long-term use of substances that can irritate your stomach such as aspirin, anti-inflammatory drugs, or alcohol.

Feldman M, Jensen PJ, Howden CW. Gastritis and gastropathy. In: Feldman M, Friedman LS, Brandt LJ, eds. Sleisenger and Fordtran’s Gastrointestinal and Liver Disease. 11th ed. Philadelphia, PA: Elsevier; 2021:chap 52.

Kuipers EJ. Acid peptic disease. In: Goldman L, Schafer AI, eds. Goldman-Cecil Medicine. 26th ed. Philadelphia, PA: Elsevier; 2020:chap 130.

Last reviewed on: 1/30/2023

Reviewed by: Michael M. Phillips, MD, Emeritus Professor of Medicine, The George Washington University School of Medicine, Washington, DC. Also reviewed by David C. Dugdale, MD, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team.

health implications

Adult black stools can be caused by a variety of things, including bleeding in the gastrointestinal tract, certain medications, dietary changes, or certain medical conditions. It is important to see a doctor to diagnose and determine the exact cause of black stool.

Black stools in adults can be a sign of various conditions and diseases. Usually, black stools are caused by the presence of blood in the intestines or stomach. But also, black stools can be caused by eating certain foods or medications. Therefore, if you have black stools, it could be a sign of a serious problem and you should see your doctor for diagnosis and treatment.

One of the most common causes of black stool is bleeding in the gastrointestinal tract. Blood can come from a variety of places, from stomach or duodenal ulcers to tumors in the intestines. Bleeding can also be caused by diseases such as gastritis, ulcers, polyps, or cancer.

Dark stools can also be caused by eating certain foods or medicines. For example, black stools can be the result of taking iron supplements, activated charcoal, or iron supplements. Also, black stools can be caused by eating foods containing artificial colors, such as blueberries, blackcurrants, or dark chocolate.

If you have black stools and you are not sure of the cause, it is important to see a doctor for diagnosis and finding out the cause. Do not ignore this symptom, as black feces can be a sign of a serious illness that requires immediate attention.

Black stools in adults: what can indicate a health condition

The color of stool in an adult can be varied and depends on many factors, including nutrition and health. However, black stools can be a sign of certain problems that require your doctor’s attention and advice.

One possible cause of black stool is bleeding in the upper parts of the digestive system, such as the stomach or esophagus. Blood, mixed with feces, gives it a black color. It can be caused by stomach ulcers, ulcerative colitis, cancer, or other diseases.

Also, black stools can be the result of certain medications containing iron or activated charcoal. These drugs can affect the color of the stool and cause it to turn black.

If black stools are accompanied by other symptoms, such as abdominal pain, vomiting, diarrhea, or worsening of the general condition, a doctor should be consulted to diagnose and determine the cause of this condition. Only a specialist will be able to conduct all the necessary studies and prescribe the appropriate treatment.

It is important to remember that black stool is not always an indicator of serious illness, but its appearance requires attention and should be a reason to see a doctor. Don’t ignore these symptoms and hope they go away on their own.

Causes of black stools in adults

Black stools in adults can be caused by various causes, and in some cases may indicate serious health problems. One possible cause of black stool is bleeding in the upper digestive organs, such as the stomach or esophagus. Blood, mixed with feces, gives it a black color.

Another cause of black stools may be the use of certain medicines containing iron or activated charcoal. These substances can cause discoloration of the stool.

However, if black stools are accompanied by other symptoms, such as abdominal pain, vomiting, weight loss, or weakness, this may indicate a more serious problem, such as a stomach ulcer, swelling of the esophagus, or intestines. In such cases, it is necessary to consult a doctor for diagnosis and treatment.

It is important to note that black stools can also be caused by eating certain foods such as blueberries, walnuts, or iron supplements. If you haven’t noticed any other symptoms and black stools appear after eating these foods, it’s most likely not related to a health problem.

Diseases that black stool can cause

1. Bleeding from the upper digestive organs: Black stool can be a sign of bleeding from the stomach or duodenum. Such bleeding can be caused by peptic ulcer, stomach or colon cancer, and other pathologies.

2. Bleeding from the lower digestive organs: Black stools may also be associated with bleeding from the colon or rectum. It can be caused by a variety of things, including polyps, diverticula, inflammatory bowel disease, or even cancer.

3. Medications: Some medications, such as iron supplements or activated charcoal, can cause black stools. This is due to their effect on the digestive system and the formation of black pigment in the intestines.

4. Blood digestion: Sometimes black feces can be the result of the digestion of blood in the intestine. This can occur with bleeding from the upper or lower digestive organs.

5. Infections: Rarely, black stool can be caused by an infection such as Helicobacter pylori infection or other digestive system infections.

It is important to understand that black stools can be a sign of serious illness and require a visit to a doctor for diagnosis and treatment. You should not independently make a diagnosis and take measures without consulting a specialist.

Bleeding as a cause of black stools

Black stools can be the result of bleeding in the upper parts of the digestive system, such as the stomach or duodenum. The blood entering the stomach undergoes a process of digestion, which gives it a black color. Therefore, if the feces turn black and have a characteristic odor, this may indicate the presence of bleeding in the digestive system.

Bleeding can be caused by a variety of causes, including stomach or duodenal ulcers, polyps, cancerous tumors, or inflammatory diseases of the gastrointestinal tract. Black stool can be one of the first signs of bleeding and requires immediate medical attention to diagnose and treat the underlying condition.

To determine the source of bleeding and its nature, an endoscopy may be ordered, which allows the doctor to look at the internal organs and identify the cause of black stool. Other diagnostic procedures may also be performed, such as blood and stool tests for occult blood, x-rays, and blood tests.

Treatment of black stools caused by bleeding depends on the underlying disease. In some cases, surgery may be required to stop bleeding. It is important to consult a doctor when black stool appears in order to promptly identify and treat the cause of this symptom.

Foods that can color stool black

Black stool can be caused by eating certain foods. It is important to note that in most cases this phenomenon is temporary and does not pose a threat to health. However, if black stools are accompanied by other symptoms, such as abdominal pain or changes in stool consistency, you should see a doctor to diagnose and find out the cause.

One of the most common foods that can turn stool black is blueberries. Blueberries contain natural dyes that can cause discoloration in stool. Also, the black color of feces may be due to the use of pomegranate juice, which also contains dyes.

Another product that can turn stool black is activated charcoal. Activated charcoal is used to treat poisoning and other digestive problems. It has the ability to bind toxins and other substances, which can lead to black stools.

Some dietary supplements, such as iron and beta-carotene, can also turn stool black. Iron is often taken as an additional source of this important mineral. Beta-carotene, which is found in carrots, for example, can give stool an orange tint that, when combined with black, can give the impression of black.

Finally, certain foods, such as dark chocolate and black coffee, can also contribute to blackening of the stool. These products contain natural pigments that can change the color of the stool.

Medicines that can change the color of stool

Some medicines can change the color of stool in adults. This is due to the fact that some drugs contain substances that can affect the processes of digestion and the formation of feces in the body.

For example, taking iron supplements such as ferrous sulfate, ferrous gluconate, or ferrous fumarate can cause black stools. This is because iron can turn feces black. Black feces when taking iron supplements are considered normal and are not a sign of illness.

Also, some anti-inflammatory drugs, such as aspirin or ibuprofen, can change the color of the stool. They can cause bleeding in the stomach or intestines, resulting in black stools. If you develop black stools while taking these drugs, you should contact your doctor.

In addition, some medicines used to treat infections, such as antibiotics or medicines containing bismuth, can also cause discoloration of the stool. For example, when taking the antibiotics metronidazole or tinidazole, the stool may turn greenish or black.

It is important to remember that discoloration of feces when taking medication is not always a pathological condition. However, if you notice an unusual color in your stool or if you have other symptoms such as abdominal pain or a change in the consistency of your stool, you should see your doctor to diagnose and find out the cause.

Symptoms associated with black stools

Black stools may be accompanied by a number of other symptoms that may help a doctor determine the cause of the condition. One of these symptoms is the appearance of blood in the stool (melena). If the stool is black and contains blood, this may indicate bleeding in the gastrointestinal tract. Bleeding can be caused by a variety of things, including stomach or duodenal ulcers, polyps, cancer, and other conditions.

Another symptom that may accompany black stools is soreness or discomfort in the abdomen. If you have black stools and experience pain in your stomach, it could be due to digestive problems such as ulcers or inflammation of the intestines.

There may also be associated symptoms such as nausea, vomiting, weight loss or weakness. These symptoms may indicate serious illnesses such as stomach or intestinal cancer.

If you have black stools and any of these symptoms, you should see your doctor to diagnose and determine the cause of the condition. Only a qualified specialist will be able to make an accurate diagnosis and prescribe the necessary treatment.

When to See a Doctor

Adults with black stools can have a variety of causes, some of which may require medical attention. If you notice the constant or recurring appearance of black feces, you should consult a doctor to diagnose and find out the cause of this phenomenon.

One possible cause of black stool may be bleeding in the gastrointestinal tract. This is a serious condition that requires immediate medical attention. If you notice blood in your stool or have other symptoms of bleeding, such as vomiting blood, severe abdominal pain, or general weakness, contact your doctor or call an ambulance immediately.

Another possible cause of black stool may be certain medications such as iron or activated charcoal. If you are taking these medications and notice a change in the color of your stool, check with your doctor to see if this is a normal reaction to the drug or if further testing is needed.

You should also see a doctor if black stool is accompanied by other symptoms, such as severe abdominal pain, persistent changes in bowel activity, decreased appetite, or involuntary weight loss. This may indicate the presence of other diseases that require medical intervention.

In any case, if you find black poop and are not sure of its cause, it is better to consult a doctor for a professional opinion and recommendations for further treatment.

Prevention and Guidance for Gut Health

Gut health is an important aspect of overall well-being. To maintain its normal operation and prevent various problems, certain preventive measures and recommendations should be followed.

First of all, regular consumption of foods rich in fiber helps to normalize bowel function. Vegetables, fruits, grains, and whole grains are excellent sources of fiber, which helps improve peristalsis and prevent constipation.

It is also important to follow the diet and eat at certain hours. Eating regularly will help keep your bowel healthy and avoid problems with bowel function.

Regular physical activity also has a positive effect on intestinal health. Moderate physical activity improves peristalsis and prevents constipation.

It is very important to provide the body with enough water. Drinking regularly helps improve digestion, prevents constipation and promotes normal bowel function.

In addition, it is recommended to avoid stressful situations and maintain psychological balance. Stress can negatively affect the functioning of the intestines, causing its violations.

In the event of any symptoms or problems with bowel health, a physician should be consulted for diagnosis and appropriate treatment.

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Q&A:

What does black stool mean in adults?

Black stools may indicate bleeding in the upper digestive system. It can be caused by ulcers in the stomach or duodenum, broken blood vessels in the esophagus or stomach, or bleeding from the upper intestines.

What other causes can cause black stools in adults?

Black stools can be caused by taking preparations containing iron or activated charcoal, as well as by taking products containing dyes. Also, black stools can be the result of bleeding from the lower parts of the digestive system, such as the colon or rectum.

What symptoms may accompany black stools?

In addition to black stools, bleeding in the digestive system may cause symptoms such as vomiting blood or coffee grounds, rumble in the abdomen, jaundice or pale skin, weakness, and fatigue.

When should I see a doctor if I have black stools?

If you have black stools and are not taking iron or activated charcoal supplements, have not eaten products with dyes, or have no other explanation, you should see your doctor. Bleeding in the digestive system requires medical intervention and diagnosis.

How is black stool diagnosed?

To diagnose black stool, your doctor may order blood, fecal, and urine tests, as well as colonoscopy or fibrogastroscopy. These procedures allow you to identify the source of bleeding and determine the cause of black stool.

What does black stool mean in adults if I take iron supplements?

If you are taking iron supplements, black stools may be due to their effects on the body. Iron can turn stool black. However, if you notice other symptoms or are concerned about your condition, you should consult your doctor.

Reviews

Mikhail Popov

Thank you for the useful information! This article is very interesting and informative. I never thought that stool color could be related to health. I now understand that black stools can be a sign of problems with the digestive system, such as bleeding in the stomach or intestines. This is a really serious cause for concern and I am sure that people should see a doctor if faced with such a situation. I also learned that some foods, such as cuttlefish ink or activated charcoal, can temporarily turn stool black, but this is not a cause for alarm. Thank you for the clarification!

Maria Smirnova

The article is very useful and informative! I have been interested in health issues for a long time and always want to be aware of possible problems. After reading this article, I learned that black stools in adults can be indicative of various causes, such as bleeding in the gastrointestinal tract, taking iron supplements, and eating certain foods, such as black pudding or blueberries. It was also interesting to know that black stools could be a sign of stomach or intestinal cancer. In any case, the article reminded me of the importance of seeing a doctor if you have these symptoms in order to get professional advice and a diagnosis. Thanks for the useful information!

mike

Black stools in adults can be a serious cause for concern. It can indicate various causes and health conditions. This may be the result of taking iron supplements or activated charcoal supplements. However, black stools can also be a sign of bleeding in the gastrointestinal tract, which requires immediate medical attention. It may be caused by a stomach or intestinal ulcer, a tumor, or other problems. If you have these symptoms, you should not postpone a visit to the doctor. It is important to get professional advice and diagnosis in order to find out the cause of black stool and prevent possible complications.

beautifullady

The article is very useful and informative. I have long been interested in the question of the causes of black feces in adults, and in this article I found all the necessary answers. It turns out that black feces can indicate bleeding in the gastrointestinal tract, which is a serious symptom. Also, black stools can be the result of taking certain medications or dietary supplements. I learned that it’s important to see a doctor if black stools are accompanied by other symptoms, such as stomach pain or diarrhea. Thanks to this article, I am now more aware of my health and know when to seek help. I recommend everyone to read this article to be aware of their health status.

Alexander Ivanov

The article is very informative and useful. I have been looking for information about the causes of black feces in adults for a long time and finally found the answers in this article. Everything turned out to be much more serious than I thought. Black stools can be a sign of bleeding in the gastrointestinal tract, which requires immediate medical attention. Also, black stools can be the result of certain medications or foods that contain iron. In any case, when you see black feces, you need to see a doctor to diagnose and find out the causes of this condition. The article details the possible causes and provides recommendations for further action. I am very grateful to the authors for such useful information!

Anna Ivanova

The article is very informative and useful. I have always been interested in my health and I believe that knowing about things like stool color can help detect health problems in time. Thanks to the author for a detailed description of the causes of black feces in adults. It is very important to know that this color may indicate bleeding in the body or problems with the stomach. Now I know that if I have black stools, this may be a signal to see a doctor. The article also gives recommendations on what to do in such a situation. It is very useful to know about the possible causes and what to do in case of black stool. In general, the article is very interesting and useful, and I recommend reading it to everyone who cares about their health.

alex

The article is very informative and useful. I have long been interested in the question of the causes of black feces in adults. I always thought it could be related to the digestive system, but thanks to this article, I learned that black stool can be a sign of bleeding in the gastrointestinal tract. I now know that this bleeding can be caused by a variety of things, including stomach or duodenal ulcers, tumors, and even certain medications. The article also suggested that when black stool appears, it is necessary to consult a doctor for additional research and to find out the cause. I am very grateful to the author for such useful information, which helped me to better understand my health and take the right measures.

andrew

The article is very interesting and useful. I recently encountered such a problem and searched for information on the Internet. It turns out that black feces can indicate a variety of reasons, from the usual use of certain foods to serious diseases. It was helpful to know that black stools can be caused by bleeding in the gastrointestinal tract, requiring medical attention. The article also helped me understand that the use of iron supplements or activated charcoal can cause this effect. In general, the article is very informative and helped me figure out my problem. Many thanks to the author for the useful information!

Black stool: causes and possible diseases

Find out what black stool means and what causes it. Possible causes may include bleeding from the gastrointestinal tract, use of certain drugs or foods, and other medical conditions. If you have black stool, see your doctor for diagnosis and treatment.

The color of feces can be a good indicator of a person’s health. The stool is usually brown in color due to the presence of bile pigments such as bilirubin and biliverdin. However, sometimes the feces can turn black, which can be a sign of various diseases.

One of the causes of black stools may be bleeding in the gastrointestinal tract. The blood, getting into the intestines, is oxidized and changes the color of the feces to black. Bleeding can be caused by a variety of things, such as stomach or duodenal ulcers, polyps, and colon or stomach cancer.

In addition to bleeding, black stools can be caused by certain medications such as iron, anticoagulants, or antidepressants. These drugs can change the color of stool to black and are not a sign of a disease.

If you notice that your stool has turned black, you need to see a doctor to diagnose and find out the cause of this phenomenon. Only an experienced specialist will be able to make the correct diagnosis and prescribe the necessary treatment.

Causes of black stools

Black stools can be caused by a variety of causes, including bleeding in the upper or lower digestive system. One of the most common causes is bleeding from the stomach or duodenum. In such cases, the blood mixes with the food masses and becomes black.

Another possible cause of black stool is bleeding in the colon or rectum. In this case, the blood can also mix with the stool, giving it a black color. Such bleeding can be associated with a variety of conditions, including stomach or duodenal ulcers, colon polyps, colon or rectal cancer.

Black stools can also be the result of certain medications containing iron or activated charcoal. Iron can turn stool black, and activated charcoal can cause similar color changes in stool.

In rare cases, black stools may be associated with bleeding in the upper digestive system, such as the esophagus, stomach, or duodenum. In such cases, the blood may not have time to be completely digested and retain its black color when exiting with feces.

If you have black stools, it is important to see a doctor to diagnose and find out the cause of this condition. Only an experienced specialist will be able to make the correct diagnosis and prescribe the necessary treatment.

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Black stool after taking certain drugs

Black stool after taking certain drugs may be caused by their effect on the digestive system. Some medicines contain active ingredients that can change the color of the stool.

One of the most common drugs that cause black stools are drugs containing iron. Iron can have a coloring effect on stool, turning it black or dark brown. This is due to the fact that iron can interact with gastrointestinal juices and oxidize, forming compounds that are black in color.

In addition, black stools can be caused by drugs containing activated charcoal. Coal has adsorbing properties, and can bind and remove various toxins and substances from the body. At the same time, black coal passes through the intestines, which gives the feces a black color.

Some antibiotics and preparations containing bismuth can also cause black stools. This is due to the fact that these drugs interact with gastrointestinal juices and form compounds that color feces black.

It is important to note that black stools after taking medications are not always a sign of a serious illness. However, if black stools are accompanied by other symptoms such as burning in the stomach, nausea, vomiting, or bloody stools, a doctor should be consulted for diagnosis and treatment.

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Q&A:

9 0148 Why do I have black feces?

The appearance of black stool can be due to various reasons. One of them may be the consumption of food containing a large amount of iron or activated charcoal. Also, black stools can be a sign of bleeding in the upper parts of the digestive system, such as the stomach or esophagus. If black feces appear regularly, you should consult a doctor to find out the cause.

What can black feces mean?

Black stools may be a sign of bleeding in the upper parts of the digestive system. Blood, when interacting with gastric juice and enzymes of the digestive tract, oxidizes and becomes black. This condition is called melena. Black stools can also be caused by eating foods high in iron or activated charcoal.

What diseases can be associated with black stool?

Black stools can be a sign of various diseases of the digestive system. For example, a stomach or duodenal ulcer, stomach cancer, bleeding in the esophagus or stomach, duodenal ulcer, intestinal polyps. Also, black stools can be associated with the use of certain medications, such as iron or activated charcoal.

How to determine the cause of black stool?

Consult your doctor to determine the cause of black stool. The doctor may order various tests, such as blood tests, gastroscopy, colonoscopy, and others, to find out the cause of black stool. It’s also important to tell your doctor about symptoms and other body changes that may be associated with black stools.

Can black stool be safe?

In some cases, black stools may be harmless and not indicative of disease. For example, eating foods high in iron or activated charcoal can cause black stools. However, if black stool appears regularly or is accompanied by other symptoms, such as burning or stomach pain, then you should consult a doctor to find out the cause.

What should I do if I have black stools?

Black stool is a change in the color of the stool, in which it becomes black or very dark. It may have a shiny surface and a resinous consistency. This phenomenon is called melena.

What could be the causes of black stool?

There can be several reasons for black stool. One of the most common causes is bleeding from the upper parts of the digestive system, such as the stomach or esophagus. The blood, getting into the intestines, is oxidized and turns black. Also, black stool can be caused by the use of certain medications, such as iron or activated charcoal. Other possible causes include stomach or duodenal ulcers, tumors in the digestive system, infections, and other conditions.

Symptoms and signs of black stool

Black stool can be a sign of various diseases and conditions of the body. One of the most common symptoms of black stool is its dark color, which can be almost black or dark brown.

However, stool color is not the only sign of black stool. It may be accompanied by other symptoms such as:

• Unusual stool odor;
• Abdominal thumping or pain;
• Feeling of dissatisfaction after emptying;
• Weakness or fatigue;
• Loss of appetite;
• Weight loss for no apparent reason;
• Frequent or unusual stools;
• Sensation of not being able to empty the bowels completely;
• Blood in stool or on toilet paper.

If you have these symptoms, especially if they recur or get worse, it is important to see your doctor to diagnose and find out the cause of black stools. Possible causes may vary, including bleeding from the gastrointestinal tract, peptic ulcers, tumors, infections, or taking certain medications.

Black stools and bleeding from the gastrointestinal tract

Black stools, or melena, is one of the signs of bleeding from the gastrointestinal tract. This condition occurs when the blood entering the intestines is attacked by gastric juices and enzymes, which leads to the oxidation of hemoglobin and the formation of dark, almost black stools.

The main cause of black feces and bleeding from the gastrointestinal tract is peptic ulcer of the stomach and duodenum. With an ulcer, an ulcer forms, which can penetrate the vessels and cause bleeding. As a result, blood enters the intestines and gives the feces a black color.

Other causes of bleeding from the gastrointestinal tract include polyps, tumors, inflammatory diseases (such as ulcerative colitis), bleeding in the stomach and intestines, and certain medications such as aspirin and certain anticoagulants.

If black stool is found, it is necessary to consult a doctor to diagnose and determine the cause of this condition. The doctor may prescribe a gastroscopy, colonoscopy, blood tests, and other studies to identify and eliminate the source of bleeding and prevent its consequences.

It is important to remember that black stools and gastrointestinal bleeding can be serious conditions that require medical attention. Therefore, it is necessary to see a doctor at the first signs of black stools, such as a change in the color and consistency of the stool, as well as other symptoms, such as abdominal pain, vomiting, weakness or pallor of the skin.

Black stool and iron deficiency anemia

Iron deficiency anemia is one of the most common forms of anemia characterized by a lack of iron in the body. One of the symptoms of this disease can be black stools caused by bleeding from the upper or lower digestive system.

Black stool, or melena, occurs due to the presence of digested blood in it. Iron deficiency anemia can lead to the development of stomach or duodenal ulcers, which cause bleeding and, as a result, black stools.

However, black stool is not always a sign of iron deficiency anemia. It can also be caused by taking iron supplements or eating foods high in iron, such as blackcurrants or black mushrooms.

If you have black stools, you should consult a doctor to diagnose and find out the cause of this symptom. Your doctor may order a test, including blood tests, a gastroenteroscopy, or a colonoscopy, to check for bleeding and check for possible conditions, such as ulcers or polyps.

Black stools and ingestion of products containing activated charcoal

Black stools can be caused by ingestion of products containing activated charcoal. Activated charcoal is widely used in medicine to treat poisoning and other conditions associated with dysfunction of the digestive system.

Activated carbon has the ability to bind and remove toxic substances and other harmful substances from the body. It can be taken as tablets, capsules, or powder. After taking activated charcoal, it passes through the digestive system and is excreted from the body along with feces.

When taking activated charcoal, the stool may turn black, which is a normal reaction. Black stool does not always indicate the presence of a disease or problem in the body. However, if black stools are accompanied by other symptoms, such as abdominal pain, vomiting, or diarrhea, you should see a doctor to diagnose and find out the cause.

Activated charcoal products should only be taken on the advice of a physician. It is necessary to observe the dosage and frequency of administration indicated in the instructions for the drug. It is important to remember that activated charcoal can interfere with the absorption of other medications, so it should be discussed with your doctor if you are taking other medications.

Black stools and tumors in the gastrointestinal tract

Black stools may be a sign of a tumor in the gastrointestinal tract. Tumors can develop in various parts of this tract, including the stomach, small intestine, and large intestine. Black stool is due to the presence of occult blood in the stool, which can be caused by bleeding from a tumor.

Tumors of the gastrointestinal tract can be either benign or malignant. Benign tumors such as polyps usually do not cause symptoms and are not dangerous. However, some polyps can progress to cancer, so finding and removing them is an important procedure for preventing gastrointestinal cancer.

Cancers, such as cancer of the stomach or colon, can cause a variety of symptoms, including black stools. Bleeding from the tumor may be imperceptible and manifest only as black stools. Therefore, if you have black stools, especially if this is a new symptom, it is important to see a doctor to diagnose and rule out a tumor in the gastrointestinal tract.

Various methods can be used to diagnose tumors of the gastrointestinal tract, including endoscopic examinations such as gastroscopy or colonoscopy. If a tumor is found, a biopsy may be required to determine its nature.

It is important to note that black stools are not always a sign of a tumor and may be due to other causes such as bleeding from stomach or intestinal ulcers, taking iron supplements, or eating certain foods such as blueberries or walnuts. However, black feces always require attention and examination to rule out the possibility of a tumor in the gastrointestinal tract.

When to see a doctor

Black stool can be a sign of various diseases and conditions in the body. In most cases, the appearance of black feces is the result of bleeding in the gastrointestinal tract. Therefore, if you find black feces, you should immediately consult a doctor.

One cause of black stools may be bleeding from the upper parts of the digestive system, such as the stomach or esophagus. It can be caused by ulcers, polyps, cancer, or other diseases. In such cases, the blood mixes with the stool and gives it a black color.