Eating watermelon may result in red stools, a physiological change in fecal color.
Examination of the general characteristics of feces is valuable in the diagnosis of digestive diseases and parasitic infections, in which changes in fecal color can be divided into physiological and pathological changes. The former may be caused by eating different foods, such as dark brown stools in meat eaters and dark green stools in those who eat too many vegetables; the latter is caused by some diseases, such as digestive tract tumors, digestive tract bleeding and so on.
Similarly, when the color of feces becomes red, on one hand, it may be caused by eating foods containing red pigment, such as eating a lot of dragon fruit, tomato, watermelon, etc. On the other hand, it may be caused by diseases in the digestive system. On the other hand, the digestive system may have lesions, such as rectal cancer, hemorrhoids, anal fissure blood, ulcer hemorrhage or esophagogastric varices rupture bleeding can also be seen in the blood.
Those who have red stools should go to regular hospitals for relevant examinations to make a clear diagnosis.