As cannabis use has become legal in many U.S. states for medical or recreational use, Americans' views on the drug may have gotten rosier.
The researchers saw a similar pattern for
One is that tobacco smoke has been studied for much longer than cannabis smoke has, and there has been a large public health effort to educate people about the dangers of tobacco. There just isn't the same amount of data about cannabis, in part because it's still illegal federally, making research a challenge.
Meanwhile, as tobacco has been increasingly restricted, with states or local governments limiting where a person can smoke, cannabis has been increasingly legalized. “I think that because of all those reasons, it didn't surprise me that more people favored cannabis over tobacco. I think it did surprise me that that perception was increasing over time, that compared to tobacco, increasingly people were selecting cannabis smoke as safer. And again, we're talking about just smoke,” Cohen said.
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