A new report calls for public education and closing of legal loopholes to keep the public safe.

As more states have legalized the sale of cannabis, a fractured and inconsistent legal framework has emerged across the country that has prioritized sales income and tax revenue over public health, a new report finds.

The report, issued Thursday by the National Academies of Sciences, Engineering and Medicine, describes an “urgent need for a coordinated public health response.” The academies, a nonprofit advisory group of the nation’s leading scientists, said that such a response should include a federally led campaign to educate parents, children and others about the risks of a drug that is increasingly potent.

Among the other suggestions, the report also calls for a lifting of research restrictions on cannabis. In recent years, many claims have been made about the medicinal and other health effects of the drug but often without substantiation from science.

Even as a patchwork of laws and regulations have emerged, the potency of cannabis products has surged.Cindy Schultz for The New York Times

Currently 24 states, the District of Columbia and two U.S. territories have legalized the sale of cannabis for recreational use, according to the National Conference on State Legislatures. In 13 other states, cannabis is legal for medicinal use.

Even as a patchwork of laws and regulations have emerged, the potency of cannabis products has surged, as measured by the growing concentration of THC, the main psychoactive compound in cannabis. The rapid increases have left the public unaware of the health risks, particularly to young people, pregnant women and seniors, according to Yasmin Hurd, director of the Addiction Institute at the Icahn School of Medicine and the vice chair of the committee that issued the latest report.

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