Secondhand smoke is classified as a known human carcinogen, meaning it can cause cancer. While smoking is also a risk factor for stroke, it has been unclear whether or not secondhand smoke (SHS) increases risk of stroke for nonsmokers, until now.
Nonsmokers at Increased Risk of Stroke From Secondhand Smokeeresting
Interesting article about the effects of smoking on nonsmokers. With the ban on smoking in closed spaces like offices, planes, trains etc. this should have eased considerably.
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