Author Bio
Keith began writing for the Fool in 2012 and focuses primarily on healthcare investing topics. His background includes serving in management and consulting for the healthcare technology, health insurance, medical device, and pharmacy benefits management industries.
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There are two key things you should know about the cannabis industry, particularly in the U.S. First, it's still only in its early innings. Second, the potential market is huge. Those happen to be two characteristics that bode well for long-term investors.
Some cannabis companies are in especially strong positions to succeed -- and deliver great returns along the way. Here are three of the best marijuana stocks to buy in May.