Editing Tobacco (section)

===Demographic===
{{Main|Prevalence of tobacco consumption}}

Research on tobacco use is limited mainly to smoking, which has been studied more extensively than any other form of consumption. An estimated 1.1&nbsp;billion people, and up to one-third of the adult population, use tobacco in some form.{{sfn|Gilman|Zhou|2004|p=26}} Smoking is more prevalent among men<ref name="HNPGuindonBoisclair13-16">"[[#HNPGuindonBoisclair|Guindon & Boisclair]]" 2004, pp. 13–16.</ref> (however, the gender gap declines with age),{{sfn|Samet & Yoon|2001|p=5-6}}{{sfn|Surgeon General's Report Women and Smoking|2001|p=47}} the poor, and in transitional or [[developing countries]].<ref name="WHOTobaccoFactSheet">{{cite web|url=http://www.wpro.who.int/NR/exeres/978BE0FD-AE30-46C6-8F75-1F40AE7B57BC.htm|title=WHO/WPRO-Tobacco|access-date=January 1, 2009|year=2005|publisher=World Health Organization Regional Office for the Western Pacific|url-status=dead|archive-url=https://web.archive.org/web/20090211215317/http://www.wpro.who.int/NR/exeres/978BE0FD-AE30-46C6-8F75-1F40AE7B57BC.htm|archive-date=February 11, 2009}}</ref> A study published in [[Morbidity and Mortality Weekly Report]] found that in 2019 approximately one in four youths (23.0%) in the U.S. had used a tobacco product during the past 30 days. This represented approximately three in 10 high school students (31.2%) and approximately one in eight middle school students (12.5%).<ref>{{cite journal |last1=Wang |first1=Teresa W. |last2=Gentzke |first2=Andrea S. |last3=Creamer |first3=MeLisa R. |last4=Cullen |first4=Karen A. |last5=Holder-Hayes |first5=Enver |last6=Sawdey |first6=Michael D. |last7=Anic |first7=Gabriella M. |last8=Portnoy |first8=David B. |last9=Hu |first9=Sean |last10=Homa |first10=David M. |last11=Jamal |first11=Ahmed |last12=Neff |first12=Linda J. |title=Tobacco Product Use and Associated Factors Among Middle and High School Students — United States, 2019 |journal=MMWR. Surveillance Summaries |date=6 November 2019 |volume=68 |issue=12 |pages=1–22 |doi=10.15585/mmwr.ss6812a1 |pmid=31805035 |pmc=6903396 |doi-access=free }}</ref>

Rates of smoking continue to rise in developing countries, but have leveled off or declined in [[developed countries]].<ref>{{cite web|url=https://www.who.int/mediacentre/factsheets/fs339/en/ |title=Who Fact Sheet: Tobacco |publisher=Who.int |date=July 26, 2013 |access-date=October 3, 2013}}</ref> Smoking rates in the United States have dropped by half from 1965 to 2006, falling from 42% to 20.8% in adults.<ref>{{cite web|url=https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5644a2.htm#fig |title=Cigarette Smoking Among Adults – United States, 2006 |publisher=Cdc.gov |access-date=October 3, 2013}}</ref> In the developing world, tobacco consumption is rising by 3.4% per year.<ref>{{cite web|url=http://www.wpro.who.int/mediacentre/factsheets/fs_20020528/en/ |archive-url=https://web.archive.org/web/20130826030927/http://www.wpro.who.int/mediacentre/factsheets/fs_20020528/en/ |url-status=dead |archive-date=August 26, 2013 |title=WHO/WPRO-Smoking Statistics |publisher=Wpro.who.int |date=May 27, 2002 |access-date=April 21, 2014}}</ref>