why does stool turn black
What is dark stool? Darkening of the stool may be a normal occurrence related to specific foods or medications; however, it can sometimes be a sign of a more serious condition such as bleeding in the intestinal tract. When related to foods, blueberries, beets, or black licorice are often the cause. Stool passed after eating these foods may be dark brown, bluish, reddish, or black. Iron supplements and medications containing bismuth subsalicylate, a common ingredient in anti-diarrhea medications, can also turn the stool dark or black. Dark stool not associated with specific foods or medications can be more worrisome and may be an indicator of bleeding somewhere in the digestive system.
The condition may occur also due to ulcers. Drinking red wine or eating certain foods maybe the reason why you have black poop and normally will go away quickly. Normal stool is soft and easy to pass and the best way to have a normal poop is by eating foods rich in fiber such as whole wheat.