What about the use of additives in cigarettes that started around the 1960s? From wikipedia on 'cigarette': "According to data from the World Health Organizatio

What about the use of additives in cigarettes that started around the 1960s? From wikipedia on 'cigarette': "According to data from the World Health Organization,[40] the amount of tobacco per 1000 cigarettes fell from 2.28 pounds in 1960 to 0.91 pounds in 1999, largely as a result of reconstituting tobacco, fluffing and additives."