Hospital

About 2 days ago my mom told me that my grandfather was in the hospital. He has diabetes so his blood pressure goes down or up a lot. I thought that this time wasn't so bad, but unfortunately it is. He has been there for about 3 days. During the last year he has gone many times. Sometimes the doctor tells him to stop drinking, but he doesn't. He just doesn't take much care in himself. he goes to this place called El club español where he eats and talks with his Friends. I tell him to not go there so much but he doesn't pay attention. Well, what can I do. He is like that.