Alexandra Loukas
Current Organizations / Institutes
The organizations/institutes from the scholar's latest article
Research Subjects
Alexandra Loukas has a total of 123 co-authors. Here are the top co-authors by number of shared publications:
- Keryn E. Pasch
Department of Kinesiology and Health Education, The University of Texas at Austin, Austin, Texas, USA
20 shared publications - Anna V. Wilkinson
University of Texas Health Science Center at Houston, Austin, TX, United States
19 shared publications C. Nathan Marti
Department of Kinesiology & Health Education, University of Texas at Austin
15 shared publicationsCheryl L. Perry
Health Promotion and Behavioral Sciences The University of Texas Health Science Center at Houston School of Public Health Austin TX USA
15 shared publications- C. Nathan Marti
The University of Texas at Austin
14 shared publications - Cheryl L. Perry
School of Public Health Health Science Center University of Texas Austin, TX United States
12 shared publications
Latest Publications
- Open Access
- 16 October 2026
- Published by SAGE Publications in Tobacco Use Insights
- Vol. 19
E-Cigarette Brand Trends: A Comparison Across Texas College Students, a United States Online Sample, and the E-cigarette Retail Market (2023-2025)
Objective: This study leverages three data sources to identify and characterize the top e-cigarette brands among young adults and in the e-cigarette retail market. Methods: Data were obtained from two cross-sectional surveys of current e-cigarette users participating in either the Truth Continuous Tracking Online (Truth CTO) or Texas College Tobacco Survey and from NielsenIQ Retail Scanner data, aggregated at the national and state (Texas) levels. Results: Eight brands (Esco Bars, Elf Bar, Vuse, JUUL, Puff Bar, SMOK, Geek Bar, and Lost Mary) dominated all sources. Rankings of the top e-cigarette brands in the Truth CTO, Texas College Tobacco Survey, and NielsenIQ Retail Scanner data differed. In 2023, Elf Bar, Esco Bars, and Vuse were the top brands among Texas college students, while the Truth CTO sample showed higher use of JUUL, Puff Bar, and Elf Bar. Brand rankings shifted in 2024, with Esco Bars and Elf Bar declining and Geek Bar emerging in the Texas College sample and Geek Bar and Lost Mary increasing in the Truth CTO sample. Conclusion: Results demonstrate how rapid surveillance and retail data can be used to complementarily characterize top e-cigarette brands in the US retail market. There is markedly more variation in the top e-cigarette brands at the state level. Continued monitoring of e-cigarette brands is needed to identify emergent trends and inform strategies to reduce e-cigarette use among young adults at the state, national, and retail market levels.
- 16 October 2026
- Published by SAGE Publications in Tobacco Use Insights
- Vol. 19
Open AccessE-Cigarette Brand Trends: A Comparison Across Texas College Students, a United States Online Sample, and the E-cigarette Retail Market (2023-2025)
Objective: This study leverages three data sources to identify and characterize the top e-cigarette brands among young adults and in the e-cigarette retail market. Methods: Data were obtained from two cross-sectional surveys of current e-cigarette users participating in either the Truth Continuous Tracking Online (Truth CTO) or Texas College Tobacco Survey and from NielsenIQ Retail Scanner data, aggregated at the national and state (Texas) levels. Results: Eight brands (Esco Bars, Elf Bar, Vuse, JUUL, Puff Bar, SMOK, Geek Bar, and Lost Mary) dominated all sources. Rankings of the top e-cigarette brands in the Truth CTO, Texas College Tobacco Survey, and NielsenIQ Retail Scanner data differed. In 2023, Elf Bar, Esco Bars, and Vuse were the top brands among Texas college students, while the Truth CTO sample showed higher use of JUUL, Puff Bar, and Elf Bar. Brand rankings shifted in 2024, with Esco Bars and Elf Bar declining and Geek Bar emerging in the Texas College sample and Geek Bar and Lost Mary increasing in the Truth CTO sample. Conclusion: Results demonstrate how rapid surveillance and retail data can be used to complementarily characterize top e-cigarette brands in the US retail market. There is markedly more variation in the top e-cigarette brands at the state level. Continued monitoring of e-cigarette brands is needed to identify emergent trends and inform strategies to reduce e-cigarette use among young adults at the state, national, and retail market levels.
- Open Access
- 11 July 2026
- Published by Springer Nature in Journal of Immigrant and Minority Health
- p. 1-10
Immigration-Related Sociopolitical Stress, Mental Health, and Tobacco Use Among Mexican American College Students
Sociopolitical stress associated with the policies and rhetoric coming from recent U.S. presidential administrations is of particular concern vis-à-vis Hispanic individuals, who have been disproportionately targeted for detention and deportation. Such stress may be associated with symptoms of depression and anxiety, and ultimately with tobacco use. However, there is a paucity of research examining how sociopolitical stress is associated with mental health problems and substance use among Hispanic emerging adults. Accordingly, the present study was designed to examine the extent to which, within a sample of Mexican American college students, sociopolitical stress would be linked with tobacco use indirectly through symptoms of depression and anxiety. A cross-sectional sample of 997 Mexican American college students in Texas completed measures of sociopolitical stress, depressive symptoms, anxiety, and cigarette and e-cigarette use. More than 75% of participants agreed/strongly agreed with each of the sociopolitical stress items, suggesting high levels of sociopolitical stress within the sample. Structural equation models indicated that sociopolitical stress was associated directly with depressive symptoms (β = 0.16, p < .001) and indirectly with both cigarette (b = 0.01, 95% CI = 0.002, 0.015) and e-cigarette (b = 0.02, 95% CI = 0.005, 0.033) use and sociopolitical stress was associated directly with anxiety (β = 0.16, p < .001) and indirectly with both cigarette (b = 0.01, 95% CI = 0.001, 0.014) and e-cigarette (β = 0.02, 95% CI = 0.008, 0.037) use. Intervention and policy work is needed to offset the associations of sociopolitical stress associated with recent U.S. administrations vis-à-vis mental health symptoms and tobacco use among Hispanic populations, including college students.
- 11 July 2026
- Published by Springer Nature in Journal of Immigrant and Minority Health
- p. 1-10
Open AccessImmigration-Related Sociopolitical Stress, Mental Health, and Tobacco Use Among Mexican American College Students
Sociopolitical stress associated with the policies and rhetoric coming from recent U.S. presidential administrations is of particular concern vis-à-vis Hispanic individuals, who have been disproportionately targeted for detention and deportation. Such stress may be associated with symptoms of depression and anxiety, and ultimately with tobacco use. However, there is a paucity of research examining how sociopolitical stress is associated with mental health problems and substance use among Hispanic emerging adults. Accordingly, the present study was designed to examine the extent to which, within a sample of Mexican American college students, sociopolitical stress would be linked with tobacco use indirectly through symptoms of depression and anxiety. A cross-sectional sample of 997 Mexican American college students in Texas completed measures of sociopolitical stress, depressive symptoms, anxiety, and cigarette and e-cigarette use. More than 75% of participants agreed/strongly agreed with each of the sociopolitical stress items, suggesting high levels of sociopolitical stress within the sample. Structural equation models indicated that sociopolitical stress was associated directly with depressive symptoms (β = 0.16, p < .001) and indirectly with both cigarette (b = 0.01, 95% CI = 0.002, 0.015) and e-cigarette (b = 0.02, 95% CI = 0.005, 0.033) use and sociopolitical stress was associated directly with anxiety (β = 0.16, p < .001) and indirectly with both cigarette (b = 0.01, 95% CI = 0.001, 0.014) and e-cigarette (β = 0.02, 95% CI = 0.008, 0.037) use. Intervention and policy work is needed to offset the associations of sociopolitical stress associated with recent U.S. administrations vis-à-vis mental health symptoms and tobacco use among Hispanic populations, including college students.
- 16 May 2026
- Published by Taylor & Francis in Substance Use & Misuse
- Vol. 61 (13) , 1-8
Daily Associations Between Social Media Exposure and E-Cigarette Use Among Mexican American College Students
While e-cigarette use has declined or remained relatively stable in some older adult age groups, young adults continue to have the highest prevalence of use. Recent national estimates indicate that...
- 16 May 2026
- Published by Taylor & Francis in Substance Use & Misuse
- Vol. 61 (13) , 1-8
Daily Associations Between Social Media Exposure and E-Cigarette Use Among Mexican American College Students
While e-cigarette use has declined or remained relatively stable in some older adult age groups, young adults continue to have the highest prevalence of use. Recent national estimates indicate that...
- Open Access
- 26 April 2026
- Published by MDPI AG in Behavioral Sciences
- Vol. 16 (5) , 653
Bidirectional Associations Between Engagement with Tobacco Information on Social Media and Young Adults’ Depressive Symptoms: A Longitudinal Cross-Lagged Analysis
This study examined the cross-lagged associations between self-reported exposure to and engagement with tobacco/nicotine information on social media and depressive symptoms among young adults. Participants were 4267 20–32-year-olds (Mage 23.28, SD = 2.30 at baseline, 64.8% females) recruited in the Marketing and Promotions across Colleges in Texas study. Data for this study were collected in spring 2017 (baseline) and spring 2018 (follow-up). Results indicate that although self-reported exposure to and engagement with tobacco information, which were dichotomized, did not significantly predict subsequent depressive symptoms, young adults with clinically significant symptoms of depression were more likely than their peers to be exposed to ( = 0.10, p < 0.001) and engage with ( = 0.08, p < 0.01; = 0.08, p < 0.05) tobacco information on social media one year later. The findings indicate that young adults with depressive symptoms may be susceptible to persuasive tobacco marketing on social media and in turn to potentially using tobacco and nicotine products. Findings call for regulation around tobacco marketing information on social media, especially for young adults with elevated depressive symptoms, a group at heightened risk for tobacco and ENDS use.- 26 April 2026
- Published by MDPI AG in Behavioral Sciences
- Vol. 16 (5) , 653
Open AccessBidirectional Associations Between Engagement with Tobacco Information on Social Media and Young Adults’ Depressive Symptoms: A Longitudinal Cross-Lagged Analysis
This study examined the cross-lagged associations between self-reported exposure to and engagement with tobacco/nicotine information on social media and depressive symptoms among young adults. Participants were 4267 20–32-year-olds (Mage 23.28, SD = 2.30 at baseline, 64.8% females) recruited in the Marketing and Promotions across Colleges in Texas study. Data for this study were collected in spring 2017 (baseline) and spring 2018 (follow-up). Results indicate that although self-reported exposure to and engagement with tobacco information, which were dichotomized, did not significantly predict subsequent depressive symptoms, young adults with clinically significant symptoms of depression were more likely than their peers to be exposed to ( = 0.10, p < 0.001) and engage with ( = 0.08, p < 0.01; = 0.08, p < 0.05) tobacco information on social media one year later. The findings indicate that young adults with depressive symptoms may be susceptible to persuasive tobacco marketing on social media and in turn to potentially using tobacco and nicotine products. Findings call for regulation around tobacco marketing information on social media, especially for young adults with elevated depressive symptoms, a group at heightened risk for tobacco and ENDS use. - Open Access
- 2 April 2026
- Published by JMIR Publications Inc. in JMIR Research Protocols
- Vol. 15, e95651
Correction: Vaping, Acculturation, and Social Media Use Among Mexican American College Students: Protocol for a Mixed Methods Web-Based Cohort Study
[This corrects the article DOI: 10.2196/63584.].
- 2 April 2026
- Published by JMIR Publications Inc. in JMIR Research Protocols
- Vol. 15, e95651
Open AccessCorrection: Vaping, Acculturation, and Social Media Use Among Mexican American College Students: Protocol for a Mixed Methods Web-Based Cohort Study
[This corrects the article DOI: 10.2196/63584.].
- 20 February 2026
- Published by Taylor & Francis in Substance Use & Misuse
- p. 1-10
Depressive Symptoms Predict Cannabis Initiation Among Mexican American Young Adults
Factors contributing to cannabis initiation among Hispanic young adults remain understudied. We examined the independent and interactive roles of depressive symptoms, family cohesion, and family conflict on cannabis initiation one year later among 616 18-29-year-old cannabis-naïve Mexican American college students in Texas. Mixed-effects logistic regressions indicated that greater depressive symptoms predicted cannabis initiation one year later. Neither family cohesion nor family conflict moderated the depressive symptoms-cannabis initiation association. Mexican American young adults experiencing depressive symptoms may initiate cannabis use to cope with emotional distress. Additional research should examine the factors that drive cannabis initiation in this population.
- 20 February 2026
- Published by Taylor & Francis in Substance Use & Misuse
- p. 1-10
Depressive Symptoms Predict Cannabis Initiation Among Mexican American Young Adults
Factors contributing to cannabis initiation among Hispanic young adults remain understudied. We examined the independent and interactive roles of depressive symptoms, family cohesion, and family conflict on cannabis initiation one year later among 616 18-29-year-old cannabis-naïve Mexican American college students in Texas. Mixed-effects logistic regressions indicated that greater depressive symptoms predicted cannabis initiation one year later. Neither family cohesion nor family conflict moderated the depressive symptoms-cannabis initiation association. Mexican American young adults experiencing depressive symptoms may initiate cannabis use to cope with emotional distress. Additional research should examine the factors that drive cannabis initiation in this population.
- 18 February 2026
- Published by BMJ in Tobacco Control
Tobacco sales via delivery app services: loopholes for underage access
- 18 February 2026
- Published by BMJ in Tobacco Control
Tobacco sales via delivery app services: loopholes for underage access
- 11 February 2026
- Published by Taylor & Francis in Substance Use & Misuse
- p. 1-9
Factors Influencing Vaping Behaviors Based on Social Cognitive Theory: A Qualitative Study among Mexican-American College Students
Vaping rates among Mexican-American college students are high, yet the contributing personal and environmental factors remain understudied. The current qualitative study applies Social Cognitive Theory to examine how personal factors (e.g., self-efficacy, beliefs, and outcome expectations) and environmental influences (e.g., social norms and social media) shape vaping behaviors in this vulnerable population. We conducted semi-structured interviews with 19 Mexican-American college students (ages 18-25 years), 68% of whom were female, and all were current vapers. Participants discussed the personal and social contexts of their vaping experiences, with questions exploring their beliefs and outcome expectations. Interviews were recorded, transcribed, and coded independently in NVivo 14 using an iterative process to identify emerging themes. Four primary themes were identified. (1) Participants reported positive first experiences with vaping due to pleasant flavors, a sense of relaxation, or social acceptance. (2) Most participants reported high self-efficacy in their ability to manage or control their vaping behaviors. (3) Participants described their perceptions of vaping's benefits and risks, including expected relaxation, social acceptance, and some reported concerns about potential health effects. (4) The exposure to vaping-related content on social media from peers and celebrities acted as environmental triggers for vaping behavior. The findings highlight the significant influence of knowledge, self-efficacy, outcome expectations, and social media exposure, key components of Social Cognitive Theory, on vaping behavior among Mexican-American college students. These insights underscore the need for tailored interventions to reduce vaping and enhance compliance with tobacco policies on college campuses.
- 11 February 2026
- Published by Taylor & Francis in Substance Use & Misuse
- p. 1-9
Factors Influencing Vaping Behaviors Based on Social Cognitive Theory: A Qualitative Study among Mexican-American College Students
Vaping rates among Mexican-American college students are high, yet the contributing personal and environmental factors remain understudied. The current qualitative study applies Social Cognitive Theory to examine how personal factors (e.g., self-efficacy, beliefs, and outcome expectations) and environmental influences (e.g., social norms and social media) shape vaping behaviors in this vulnerable population. We conducted semi-structured interviews with 19 Mexican-American college students (ages 18-25 years), 68% of whom were female, and all were current vapers. Participants discussed the personal and social contexts of their vaping experiences, with questions exploring their beliefs and outcome expectations. Interviews were recorded, transcribed, and coded independently in NVivo 14 using an iterative process to identify emerging themes. Four primary themes were identified. (1) Participants reported positive first experiences with vaping due to pleasant flavors, a sense of relaxation, or social acceptance. (2) Most participants reported high self-efficacy in their ability to manage or control their vaping behaviors. (3) Participants described their perceptions of vaping's benefits and risks, including expected relaxation, social acceptance, and some reported concerns about potential health effects. (4) The exposure to vaping-related content on social media from peers and celebrities acted as environmental triggers for vaping behavior. The findings highlight the significant influence of knowledge, self-efficacy, outcome expectations, and social media exposure, key components of Social Cognitive Theory, on vaping behavior among Mexican-American college students. These insights underscore the need for tailored interventions to reduce vaping and enhance compliance with tobacco policies on college campuses.
- 5 November 2025
- Published by Oxford University Press (OUP) in Nicotine & Tobacco Research
- Vol. 28 (6) , 965-972
Bidirectional Associations Between Depressive Symptoms and Cigarette Use During Young Adulthood: a Survival Analysis Approach
Introduction: Young adulthood is a pivotal period for mental health and tobacco use. Prior studies show a connection between smoking and depression, but the sequence of their effects remains unclear. This study explores the bidirectional associations between cigarette use and depressive symptoms in young adults aged 18–30. Methods: We analyzed data from 4232 young adults (mean age = 19.99, 64% female, 65% non-white) from 24 Texas colleges, across eight waves from 2014 to 2019. Survival analysis was conducted via multiple Cox regression, using age as the time variable and adjusting for wave, sex, and racial/ethnic identity. One model assessed if clinically significant depressive symptoms affected cigarette initiation, while another examined the influence of cigarette use on new onset of clinically significant depressive symptoms. Results: Seven-point six percent of participants initiated cigarette use, and 48.9% of participants reported new onset of depressive symptoms over the 4.5-year period. Depressive symptoms were associated with a 67% increase in the risk of cigarette initiation (HR = 1.67, p < .001). Alternatively, cigarette use was associated with a 17% increase in the risk of new onset depressive symptoms (HR = 1.17, p = .017). Discussion: Cigarette use and depressive symptoms have bi-directional associations among young adults. Interventions to prevent cigarette use should be tailored for young adults who experience depressive symptoms. Further, young adults who receive mental health treatment should be provided with smoking prevention resources. Implications: This study provides evidence of bidirectional associations between cigarette use and depressive symptoms across young adulthood. Clinically significant depressive symptoms elevated the risk of cigarette initiation. Further, cigarette use elevated the risk of new-onset depressive symptoms. These findings have implications for prevention and intervention programs with young adults. Specifically, findings support the delivery of anti-smoking resources to young adults experiencing depression and the delivery of mental health resources to young adults who use cigarettes.
- 5 November 2025
- Published by Oxford University Press (OUP) in Nicotine & Tobacco Research
- Vol. 28 (6) , 965-972
Bidirectional Associations Between Depressive Symptoms and Cigarette Use During Young Adulthood: a Survival Analysis Approach
Introduction: Young adulthood is a pivotal period for mental health and tobacco use. Prior studies show a connection between smoking and depression, but the sequence of their effects remains unclear. This study explores the bidirectional associations between cigarette use and depressive symptoms in young adults aged 18–30. Methods: We analyzed data from 4232 young adults (mean age = 19.99, 64% female, 65% non-white) from 24 Texas colleges, across eight waves from 2014 to 2019. Survival analysis was conducted via multiple Cox regression, using age as the time variable and adjusting for wave, sex, and racial/ethnic identity. One model assessed if clinically significant depressive symptoms affected cigarette initiation, while another examined the influence of cigarette use on new onset of clinically significant depressive symptoms. Results: Seven-point six percent of participants initiated cigarette use, and 48.9% of participants reported new onset of depressive symptoms over the 4.5-year period. Depressive symptoms were associated with a 67% increase in the risk of cigarette initiation (HR = 1.67, p < .001). Alternatively, cigarette use was associated with a 17% increase in the risk of new onset depressive symptoms (HR = 1.17, p = .017). Discussion: Cigarette use and depressive symptoms have bi-directional associations among young adults. Interventions to prevent cigarette use should be tailored for young adults who experience depressive symptoms. Further, young adults who receive mental health treatment should be provided with smoking prevention resources. Implications: This study provides evidence of bidirectional associations between cigarette use and depressive symptoms across young adulthood. Clinically significant depressive symptoms elevated the risk of cigarette initiation. Further, cigarette use elevated the risk of new-onset depressive symptoms. These findings have implications for prevention and intervention programs with young adults. Specifically, findings support the delivery of anti-smoking resources to young adults experiencing depression and the delivery of mental health resources to young adults who use cigarettes.