Hello Bleeding during defecation at your age is a matter of concern, It might be related to any of these conditions hemorrhoids fissure or fistula in Ano gastrointestinal bleeding Cancer like carcinoma colon Bleeding disorder liver disease In my opinion you should see a general surgeon or gastroenterologist for physical examination and a battery of tests like blood for hemoglobin, CBC, liver function,coagulation profile and colonoscopy if need be Meanwhile avoid straining at stool and avoid constipation by taking laxative or stool softener Have lots of fresh fruits and vegetables or dietary fibers. You should see your doctor immediately because loss of more blood at your age can lead to more serious complications and you may require iron or blood infusion. Hope this answers your question wishing you good health.