What are the cause of internal bleeding in your father 85 years old he has internal bleeding the blood pass through his stool What causes this bleeding He has been through every test?

Internal bleeding in an 85-year-old can be caused by various factors, including gastrointestinal issues such as ulcers, diverticulosis, or colorectal cancer. Other potential causes could include the use of anticoagulant medications, which can increase bleeding risk, or conditions like hemorrhoids. Since he has undergone extensive testing, it may be beneficial to consult with a specialist, such as a gastroenterologist, to explore less common causes or to reevaluate previous findings.