Expert: What criteria distinguish addictive substances from nonaddictive ones?
Given
Some have suggested that any substance that at least some habitual users can cease to use is nonaddictive.
However, if this is taken to be the sole criterion of nonaddictiveness, some substances that most medical experts classify as prime examples of addictive substances would be properly deemed nonaddictive.
A substance is addictive only if withdrawal from its habitual use causes most users extreme psychological and physiological difficulty.