Famous rapper Snoop Dogg is well known for his love of the herb: He once indicated that he inhales around five to 10 blunts per day—extreme even among chronic cannabis users. But the habit doesn’t seem to interfere with his business acumen: Snoop has sold 35 million albums across the globe and has collaborated extensively with numerous other successful celebrities, including domestic doyenne Martha Stewart. He’s hardly alone in his cannabis hobby. In Canada, where I live and work, about 9 percent of residents use cannabis three or more times per week.