Substance use disorders may involve alcohol, cannabis, tobacco, or other substances, and using multiple substances can increase health risks.
This possibility matters because focusing on only one substance may leave part of the pattern unexplored. A careful assessment can consider what you use, how different substances affect one another, and how use relates to concentration, sleep, stress, relationships, responsibilities, and emotional well-being. That broader view can help care respond to your actual experience rather than a narrow category.
