
What color is the stool when there is gastrointestinal bleeding from drinking alcohol?
Disease description:
I experienced hematemesis today, and the blood was bright red in color. The doctor mentioned that it was caused by drinking alcohol leading to gastrointestinal bleeding. What color is the blood when there is gastrointestinal bleeding caused by alcohol consumption?

The color of gastrointestinal bleeding mainly depends on the amount and speed of the bleeding, with specific manifestations as follows:
1. Large amount and rapid bleeding: The patient may vomit fresh blood or dark red clots, and may even present symptoms of hypovolemic shock.
2. Small amount or slow bleeding: Under the action of gastric acid and pepsin, the blood mixes with gastric contents to form a coffee-ground-like substance, resulting in coffee-colored vomitus.
3. Changes in stool color: Regardless of the bleeding amount, gastrointestinal bleeding can cause changes in stool color, potentially leading to black or tarry stools. The larger the blood loss, the darker and shinier the stool appears.