On her new album, Taylor Swift's lyric "I was a functioning alcoholic" in the song "Fortnight" has put a spotlight on the term. Informally, it means a person who drinks heavily but "they can hold a job, they can have friends," Dr. Lewis Nelson of the American Society of Addiction Medicine told us. But the term is also a misnomer because it assumes someone living with alcohol use disorder is functioning fine. If you're wary of the condition, these are symptoms to watch for.
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