'Marijuana has been legalized in a number of US states; 20 states have legalized cannabis for medical purposes; two states—Colorado and Washington state—also permit recreational use. Certain forms of cannabis are actually very potent medicine, with few or no psychoactive effects.

In California, medical marijuana has been legal for 18 years. Dr. Allan Frankel, a board-certified internist in California, has treated patients with medical cannabis for the past seven years.

By and large, cannabis is highly favored by people across the US. According to Dr. Frankel, 85-95 percent of Americans are in favor of medical cannabis, and 58-59 percent are in favor of legalizing marijuana.

The federal government, meanwhile, wants to get rid of all medical use of marijuana, which of course begs the question: Why? According to Dr. Frankel, the answer is simple. "They want it. This is a huge market," he says.'

 And yes, medical cannabis is clearly competition to the pharmaceutical industry, as the cannabis plant can take the place of a wide variety of synthetic drugs, especially for mood and anxiety disorders. The last thing they want is a therapy that's going to take away from their bottom line.'

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