Liver cleans your blood from harmful agents and toxins which are present in you blood.One of the main cause of liver ulcers is too much drinking.When the concentration of harmful agents comes at the level that can't be beard by your liver then it starts making ulcers on you liver.So due to ulcers it stops cleaning blood like before and sends toxins to your other body parts through blood like heart or lungs etc.For further details you may check this site forliver diseases.
