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UFC champion Frank Shamrock uses cannabis to stay healthy. At 17, when Shamrock's entire right leg went numb as the result of a former back injury, doctors put him in a full body cast and told him the hardest part of his life going forward would be managing pain. "What they give you will make you a drug addict," he was told about opioids. And so cannabis became Shamrock's alternative, carrying him through a successful athletic career and into the present day.

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