air quality index vs cigarettes Prolonged exposure to the in the Indian capital is equivalent to smoking more than 2 packs of a day, experts say The U.S. EPA Air Quality
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The risk of stroke is doubled for smokers

The frequency of use and extent of inhalation are major factors in determining health risks.
Increased social isolation to avoid situations where tobacco is unavailable

While those laws and MLBs dip ban motivated some players to quit, others simply got better at hiding it