Marijuana

Marijuana: THC-injection fears are "idiotic," says doctor and cannabis expert

Marijuana addiction specialist Dr. Christian Thurstone conjured images like the one seen here when, earlier this week, he shared what he sees as evidence of weed users searching for bigger and bigger highs -- and added his fear that such people may soon turn to injecting THC, the active ingredient in pot.

Dr. Bob Melamede, among the country's most vocal advocates for the medicinal benefits of cannabis, pulls no punches when asked his opinion about such a prospect. "This is nonsense," he says. "It's idiotic."