Opinion | Public health challenges of legalized pot were predictable
March 29, 2026

Cannabis is not a genie in a bottle — it was never in the bottle to begin with. The question now is how we respond to the reality we’ve created (“Pot has risks. Let’s talk about them,” Editorial, March 24).
Legalization has followed a predictable arc: rapid commercialization, normalization of use, and a growing gap between public perception and what the science actually shows. In Massachusetts, cannabis-related disorders among youth presenting to psychiatric emergency rooms have increased following commercialization. At the same time, many young people now view cannabis as low-risk.
This pattern is not new. During Prohibition, alcohol markets shifted toward higher-potency products, particularly spirits, because they were easier and more profitable to produce and transport illegally. That shift persisted after repeal, and illegal markets continued alongside legal ones. Cannabis is now following a similar trajectory: Its prohibition incentivized higher-potency products, to which legalization has expanded access.
This is not an argument for returning to prohibition of cannabis (or alcohol). It is an argument for centering public health. That means clearer education about impacts on developing brains and a more meaningful response when young people show signs of heavy use.
If we continue to treat cannabis primarily as a tax revenue stream, we will miss the moment. If we treat it as a public health issue, we still have a chance to get this right.
Stephanie Tabashneck
Cambridge
The writer, a licensed psychologist and an attorney, is director of the CLBB NeuroLaw Library at the Center for Law, Brain, and Behavior at Massachusetts General Hospital.
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