TWENTY YEARS AGO, LESS THAN a third of Americans favored legalizing marijuana. Now, 62 percent do, according to a Pew Research Center poll last fall, including nearly three-quarters of millennials. Ten states allow recreational use of weed, and 33 permit doctors tt o prescribe it for chronic pain, anxiety and other ills. A growing marijuana legalization industry, which includes many for-profit companies, is heavily promoting the drug. But what do we know about its health effects? Not enough, says author Alex Berenson. That fact occurred to him during a conversation with his wife, a forensic psychologist who works with the criminally ill. She mentioned that many of the people she saw were either high on cannabis when they committed their crime or habitual users.
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