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Legal pot in Canada raises questions for NHL

As Riley Cote took and delivered countless punches over more than a decade of junior and pro hockey, he was eager to avoid painkillers.

Early on, marijuana was touted to the enforcer as a healing option.

"I started noticing some therapeutic benefits," Cote said. "It helped me sleep, helped with my anxiety and general well-being."

Now a handful of years into retirement, Cote is a proponent of cannabis and its oils as an alternative to more addictive drugs commonly used by athletes to play through pain. Marijuana can be detected in a person's system for more than 30 days, is banned by the World Anti-Doping Agency without a specific therapeutic use exemption and is illegal in much of the United States.