Alcohol and drugs are not the problems; they are what people are using to help themselves cope with the problems. Those problems always have both physical and psychological components- anything from anemia, hypoglycemia, or a sluggish thyroid to attention deficient disorder, brain-wave pattern imbalances, or deep emotional pain.
Chris Prentiss (2007). “The Alcoholism and Addiction Cure: A Holistic Approach to Total Recovery”, p.15, BookBaby