Why a promising treatment for alcohol abuse is barely used

In our ongoing look at treating substance abuse in America, we turn to the most commonly used drug, and one of the deadliest: alcohol. Drinking kills more Americans every year than opioids or any other illegal drug. But promising treatments that could help people curb their drinking are barely being used. William Brangham reports.
Correction: In this video, we misstated Dr. Katie Witkiewitz’s credentials. She is a clinical psychologist and professor at the University of New Mexico. We regret the error.
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