It's interesting, though, that nearly 40% of those surveyed have been vaping for more than a year
EFFECT OF TAX INCREASES ON SMOKING AMONG YOUTHS AND ADULTS The CDC recently analyzed 14 years of smoking-related data to determine the effect of cigarette price on smoking and concluded that price increases reduce consumption especially in low-income, minority, and young populations (Farrelly, MC, Response to Increases in Cigarette Prices by Race/Ethnicity, Income, and Age Groups -- United States , 1976-93, MMWR, 47:605-09 (July 31, 1998), attachment 4)
In 2005, the Harm Reduction Journal published a study from the University of Colorado titled Cannabis and tobacco smoke are not equally carcinogenic. The authors explained that: Both [tobacco and marijuana] smoke contain carcinogens and particulate matter that promote inflammatory immune responses that may enhance the carcinogenic effects of the smoke
Spliffs are similar but tend to be larger due to the tobacco
Enjoy your journey
doi:10.1002/jps.2600770508 19