As the blood moves through the intestines, it turns dark, making stool appear black. This can be a warning sign of serious issues like stomach ulcers, swollen veins in the esophagus, or even stomach ...

Discover the top causes of black poop like diet, supplements, and gut health conditions, plus the best treatment options according to gastroenterologists.

Certain foods and medicines can cause black stool. Sometimes, black stool may even signal bleeding in the digestive tract.

Colon cancer is one of the most common cancers in the U.S. and cases among younger adults are rising. Early detection is ...

There are three key symptoms of colon cancer you should know, according to Cann. And while some have a more obvious ...

Discover the top common causes of yellow poop, including health conditions and dietary changes, according to a ...

Or you may easily see it as red blood, or black tar-like bowel movements ... Other tests require you to collect stool samples on more than one day. You then send the samples, in a special ...

Blood may appear black after exposure to oxygen in your uterus — this is completely normal. Implantation, an object left in your vagina, miscarriage, or an STI can also cause black blood.

“By the time symptoms appear — such as blood in the stool — the cancer ... particularly if the stool becomes bloody or dark,” Addison said. “Other symptoms can be vaguer, including ...