{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,30]],"date-time":"2026-06-30T17:47:37Z","timestamp":1782841657499,"version":"3.54.5"},"reference-count":57,"publisher":"JMIR Publications Inc.","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["JMIR Pediatr Parent"],"abstract":"\n Background<\/jats:title>\n Adolescents\u2019 exposure to electronic cigarette (e-cigarette) content through social media platforms influences their perceptions and behaviors, although cross-country analyses in different regulatory environments are scarce.<\/jats:p>\n <\/jats:sec>\n \n Objective<\/jats:title>\n This study evaluated the association between e-cigarette exposure on social media platforms and e-cigarette susceptibility and use in Jalisco (Mexico) and Southern California (United States).<\/jats:p>\n <\/jats:sec>\n \n Methods<\/jats:title>\n In 2022-2023, students from 23 high schools in Jalisco (n=1418) and 11 in Southern California (n=2953) were surveyed with harmonized measures on past-month frequency of social media platform use (ie, YouTube [Google], Instagram [Meta], TikTok [ByteDance], Snapchat [Snap Inc], WhatsApp [Meta], Facebook [Meta], Twitter (now \u201cX\u201d), and Twitch [Twitch Interactive]) and seeing e-cigarette posts on each social media platform used; which were recoded to 5-point scores (range 0-4) for social media platforms use and e-cigarette post exposure. Country-stratified logistic models regressed e-cigarette susceptibility (among noncurrent users) and past-month use on social media platform scores, adjusting for age, sex, family affluence, and friends\u2019 e-cigarette use.<\/jats:p>\n <\/jats:sec>\n \n Results<\/jats:title>\n Past-month e-cigarette use was higher in Jalisco (248\/1418, 17.5%) than Southern California (139\/2953, 4.7%; P<.001). Social media use and e-cigarette exposure on each social media platform differed across samples (P values<.001). In Southern California, more frequent social media use was positively associated with e-cigarette susceptibility (adjusted odds ratio [AOR] 1.83, 95% CI 1.48-2.25), whereas in Jalisco, higher frequency of exposure to e-cigarette content was associated with susceptibility (AOR 1.21, 95% CI 1.02-1.43). Higher frequency of social media use and exposure to e-cigarette content were both positively associated with past-month e-cigarette use in Southern California; in Jalisco, greater exposure to social media platforms and e-cigarette content was associated with past-month use.<\/jats:p>\n <\/jats:sec>\n \n Conclusions<\/jats:title>\n Frequent social media platform use and e-cigarette exposure through social media platforms appear to be associated with e-cigarette susceptibility and use across contexts. Stronger policies to limit and enforce online exposures are needed.<\/jats:p>\n <\/jats:sec>","DOI":"10.2196\/85376","type":"journal-article","created":{"date-parts":[[2026,2,16]],"date-time":"2026-02-16T12:20:08Z","timestamp":1771244408000},"page":"e85376","source":"Crossref","is-referenced-by-count":0,"title":["Exposure to e-Cigarette Posts Across Social Media Platforms and Its Associations With Susceptibility and e-Cigarette Use: Comparative Cross-Sectional Study of High Schoolers in Jalisco (Mexico) and Southern California (United States)"],"prefix":"10.2196","volume":"9","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-2503-4739","authenticated-orcid":false,"given":"D\u00e8sir\u00e9e","family":"Vida\u00f1a-Perez","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9094-8185","authenticated-orcid":false,"given":"Inti","family":"Barrientos-Gutierrez","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5728-5308","authenticated-orcid":false,"given":"Rosibel","family":"Rodr\u00edguez-Bola\u00f1os","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7243-4006","authenticated-orcid":false,"given":"Evangelina","family":"D\u00edaz-Andrade","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9973-4626","authenticated-orcid":false,"given":"Diego F","family":"Leal","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7715-6826","authenticated-orcid":false,"given":"Minji","family":"Kim","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9064-6603","authenticated-orcid":false,"given":"Jennifer B","family":"Unger","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8824-5816","authenticated-orcid":false,"given":"Thomas W","family":"Valente","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3331-0326","authenticated-orcid":false,"given":"Jessica L","family":"Barrington-Trimis","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6418-4863","authenticated-orcid":false,"given":"James F","family":"Thrasher","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1010","published-online":{"date-parts":[[2026,3,13]]},"reference":[{"key":"ref1","doi-asserted-by":"publisher","DOI":"10.1136\/tobaccocontrol-2021-056551"},{"key":"ref2","unstructured":"MiechRAJohnsonLDPatrickMEO'MalleyPMBachmanJGSchulenbergJEMonitoring the Future National Survey Results on Drug Use, 1975-2022: Secondary School Students20232025-02-08MichiganUniversity of Michigan Institute for Social Researchhttps:\/\/monitoringthefuture.org\/wp-content\/uploads\/2022\/12\/mtf2022.pdf"},{"key":"ref3","doi-asserted-by":"publisher","DOI":"10.15585\/mmwr.ss7105a1"},{"key":"ref4","doi-asserted-by":"publisher","DOI":"10.1136\/tobaccocontrol-2020-056059"},{"key":"ref5","unstructured":"Tobacco 21 | FDAU.S. Food and Drug Administration201912202024-11-10https:\/\/www.fda.gov\/tobacco-products\/retail-sales-tobacco-products\/tobacco-21"},{"key":"ref6","unstructured":"How FDA regulates vapesFood and Drug Administration2026-02-19https:\/\/www.fda.gov\/media\/159412\/download"},{"key":"ref7","doi-asserted-by":"publisher","DOI":"10.15585\/mmwr.mm7244a1"},{"key":"ref8","doi-asserted-by":"publisher","DOI":"10.15585\/mmwr.mm6806e1"},{"key":"ref9","unstructured":"Tobacco use in California 2023Truth Initiative2025-05-12https:\/\/truthinitiative.org\/research-resources\/smoking-region\/tobacco-use-california-2023"},{"key":"ref10","unstructured":"C\u00e1mara de Diputados del Congreso de la Naci\u00f3n [Chamber of Deputies National Congress]Ley general para el control del tabaco [General Tobacco Control Law]C\u00e1mara de Diputados del Congreso de la Naci\u00f3n20082026-02-19https:\/\/www.diputados.gob.mx\/LeyesBiblio\/pdf\/LGCT.pdf;"},{"key":"ref11","unstructured":"C\u00e1mara de diputados del Congreso de la Naci\u00f3n [Chamber of Deputies National Congress]Decreto por el que se expide la ley general para el control del tabaco; 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