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As more states legalize marijuana, there's growing interest in a cannabis extract — cannabidiol, also known as CBD.

It's marketed as a compound that can help relieve anxiety — and, perhaps, help ease aches and pains, too.

Part of the appeal, at least for people who don't want to get high, is that CBD doesn't have the same mind-altering effects as marijuana, since it does not contain THC, the psychoactive component of the plant.

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MICHEL MARTIN, HOST:

Copyright 2018 NPR. To see more, visit http://www.npr.org/.

MICHEL MARTIN, HOST:

Copyright 2018 NPR. To see more, visit http://www.npr.org/.

MICHEL MARTIN, HOST:

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