People are using a wider variety of tobacco products. Cigarette smoking remains the most common by far, but use of e-cigarettes, hookah and other tobacco products is on the rise (Kasza et al.,
2017). Regular use of hookah was 2% among US youth and adults in 2013 and 2014. Hookah use was highest among young adults, at 11%. Among past-30-day users of tobacco products, 38% of adults and 43% of youth had used multiple tobacco products. The most common multiple product use involved cigarettes and one other tobacco product. …