Marijuana legalization is looming in Canada, but what's in today's weed — and what isn't — may surprise you. He found that when the teenage rat brain is exposed to high THC levels, it can produce paranoia, or even schizophrenia-like symptoms in the animals. Marijuana dispensaries in Canada are operating illegally, but are widespread. The samples were sent to an accredited lab to test for THC and CBD levels. For example, one sample said it contained 13 per cent THC, but testing showed it contained 18 per cent.

Source: CBC News November 25, 2016 10:01 UTC