ALEX BERENSON: I warned about cannabis dangers 7 years ago and nobody wanted to listen

Suddenly warnings about cannabis are everywhere.

At the beginning of February, researchers reported severe mental illness has spiked in young people in Canada alongside access to high-potency cannabis.

The next day came the release of "A Killing In Cannabis," a book about a 2019 murder in California — and the violence that plagues the marijuana business and that legalization has not resolved.

Then, on Feb. 9, the New York Times dropped its support for full cannabis legalization.