Why is shit red?

Stool red includes physiological and pathological two reasons: physiological reasons are mostly due to eating a large number of foods containing red pigment, including red pitaya, carrots, etc., this situation generally does not need special treatment, stop eating the above foods, stool color will return to normal. Pathological reasons are generally red stool caused by blood, visible in hemorrhoids, anal fissure, anal fistula and other anal canal diseases; also visible in proctitis, colitis, rectal polyps and other diseases; If stool is red for a long time, it is best to do colonoscopy, stool routine examination to confirm the cause.