Conversation so far:
What happened to Brian Wilson during the Recluse period?
Brian Wilson spent a great deal of the two years following his father's death in June 1973 secluded in the chauffeur's quarters of his home.
What happened to Brian Wilson following his father's death?
Wilson spent a great deal of the two years following his father's death abusing alcohol, taking drugs, overeating, and exhibiting self-destructive behavior.
Did Brian Wilson ever get caught and arrested for his drug use?
For a short period in 1978, Brian Wilson lived as a vagrant in Balboa Park, San Diego until police officers took him to Alvarado Hospital for alcohol poisoning.

Question: Did he die from abusing drugs and alcholol?
Self-contained rewrite: Did Brian Wilson die from abusing drugs and alcholol?