The definition of sobriety is evolving, with more people embracing flexibility in their substance use. Mike Reed, a former heavy drinker, now considers himself sober despite using marijuana, ketamine infusions, and microdoses of psychedelics. This shift in perception is driven by younger Americans who are rejecting alcohol in favor of cannabis and psychedelics. The traditional understanding of sobriety as complete abstinence is giving way to a more inclusive definition that allows for moderate use of certain substances. This trend is raising concerns among some addiction experts.