In the next step tobacco is treated through a washing process in order to obtain white tobacco
A difference-in-differences analysis of youth smoking and a ban on sales of flavored tobacco products in San Francisco, California
Anatabine I came across some research from John Hopkins that showed (Caturegli, et.al, July 2012)
The legislation also requires the government to publish a comprehensive list of conditional business sectors that require licenses or certification, specify which sectors will move to post-investment management, and ensure that all conditional sectors and related requirements appear on the National Enterprise Registration Portal
doi:10.1016/j.fct.2011.07.019
The extent of the damage will the type of tobacco smoked your smoking habits, such as how many puffs you take and how much you inhale how long youve smoked specific characteristics of your lungs But after youve stopped smoking for a while, much of that damage will start to heal