In Canada, cannabis poisonings rose sharply among people 65 and older after the country legalized the drug, a new study found. In Canada, cannabis poisonings rose sharply among people 65 and older after the country legalized the drug, a new study found. your-feed-science, your-feed-health, Marijuana, Elderly, Poisoning and Poisons, Drug Abuse and Traffic, Cannabis Foods and Products, JAMA Internal Medicine (Journal), Ontario (Canada) NYT > Science