My dad is 56 years old and he had a stroke in July, come to find out he has had afib for a while that went untreated. He recently had surgery to regulate his heartbeat. Do to both problems he was being cautious when it came to eating, drinking & smoking cigarettes. I am now worried because he is getting back to the life he used to live. Meaning out late, drinking, up early & over exerting himself. Will this lead to another stroke, heart attach, or an early death? If so, what can help me help him?