A new CDC report has linked an “abrupt” 16% rise in emergency room visits to habitual cannabis use—with patients reporting nausea, vomiting, and severe abdominal pain.

Its a fact: The average psychoactive content in marijuana has nearly quadrupled from roughly 4% to about 16% tetrahydrocannabinol (THC) since the 1990s, according to data from the U.S. National Insti…