An average of 4.5mg of nicotine is absorbed from 7.9g of chewing tobacco and an average of 3.6mg of nicotine is absorbed from 2.5g moist snuff.
Severson, H.H. "What Have We Learned From 20 Years of Research on Smokeless Tobacco Cessation?" American Journal of Medical Sciences. 326(4). Oct. 2003: 206-211. Web.
In 2017, the vast majority of high school students who used smokeless tobacco were male (8.9% in high school boys vs 1.9% in high school girls).
Centers for Disease Control and Prevention (CDC). Youth Risk Behavior Surveillance — United States, 2017. MMWR Morb Mortal Wkly Rep. 15 Jun 2018;67(8).
Advertising and promotional expenditures for both cigarettes and smokeless tobacco in 2017: $9.4 billion.
Federal Trade Commission. Smokeless Tobacco Report for 2017. Retrieved from https://www.ftc.gov/reports/federal-trade-commission-cigarette-report-2017-federal-trade-commission-smokeless-tobacco. Published February, 2019.