Though many people think the sole reason to take psychedelics like LSD and 'magic mushrooms' is to trip out, they actually have a high therapeutic potential, according to author Michael Pollan. The journalism professor from UC Berkeley says when drugs like LSD and mushrooms are consumed in the right way, they can have tremendous therapeutic benefits.

Casually dropping psychedelics may seem "radical," but Pollan insists that many people already use drugs on a regular basis to change their state of mind.

"All of us use plants for—and fungi to—change consciousness. Whether it's coffee or tea or chocolate. This is a universal human desire," he told Bill Maher on Friday.

The evidence of this is nothing new either, Pollan added. LSD and psilocybin had been used first to treat things like PTSD, anxiety, alcoholism and depression almost 80 years ago.

"I thought psychedelics began in the 60s, but there was a very rich history research in the 50s late 40s using LSD psilocybin - the ingredient magic mushrooms - to help people deal with serious problems," explained Pollan.

To find out more, check out Pollan's new book - 'How to Change Your Mind: What the New Science of Psychedelics Teaches Us About Consciousness, Dying, Addiction, Depression, and Transcendence.'

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