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Dr. Sanjay Gupta: Here's Why People Get Bad Marijuana Trips

Neurosurgeon Dr. Sanjay Gupta, whose new documentary "WEED" explores the effects of cannabis on our bodies and the benefits of medical marijuana, explains why marijuana users sometimes get "bad trips." Read more: http://www.businessinsider.com/ Business Insider is the fastest growing business news site in the US. Our mission: to tell you all you need to know about the big world around you. The BI Video team focuses on technology, strategy and science with an emphasis on unique storytelling and data that appeals to the next generation of leaders – the digital generation.