is smoking cigarettes worse than smoking weed pot vs. tobacco: What science says about lighting up Toxic air pollutants from smoking

Archived from the original on 11 December 2008

Not only can quitting be difficult, but the products available to help often contain nicotine or chemical additives with undesirable side effects

As such, smoking either cannabis or high-nicotine cigarettes will decrease exercise performance until angina by increasing myocardial oxygen demand and by decreasing myocardial oxygen delivery

Marijuana smoke has many of the same harmful substances as tobacco smoke, which could damage lung tissue and lead to cancer

Morris and colleagues at jneurosci.org Access an abstract of research by Caryn Lerman, Ph.D., and colleagues at nature.com/npp