Marijuana provides greater pain relief when taken in pill form than when it is smoked, according to a study published on Monday that touches on a controversial medical issue.

Cancer and multiple-sclerosis doctors are looking more and more closely at cannabis for patients seeking relief from pain, and some jurisdictions allow the medical use of the drug for this purpose.

But marijuana smoke also carries health risks, for it carries carcinogens and respiratory irritants and...read more here: Marijuana pills better than smoking it