Sigh, ok -- a fraction as dangerous as lung cancer to smokers.<p>According to NY Times, even mouth cancer risk increases more for smokers anyway (given modern snus).<p><a href="http:&#x2F;&#x2F;www.nytimes.com&#x2F;2014&#x2F;11&#x2F;30&#x2F;business&#x2F;studying-snus-a-smokeless-tobacco-from-sweden.html?_r=0" rel="nofollow">http:&#x2F;&#x2F;www.nytimes.com&#x2F;2014&#x2F;11&#x2F;30&#x2F;business&#x2F;studying-snus-a-s...</a>