Traumatic life-events and alcohol and drug use disorders among Mexican adolescents: Bidirectional associations over 8 years

Community exposure to armed conflict and subsequent onset of alcohol use disorder

AIMS

To measure the independent consequences of community-level armed conflict beatings on alcohol use disorders (AUD) among males in Nepal during and after the 2000-2006 conflict.

DESIGN

A population-representative panel study from Nepal, with precise measures of community-level violent events and subsequent individual-level AUD in males. Females were not included because of low AUD prevalence.

SETTING

Chitwan, Nepal.

PARTICIPANTS

Four thousand eight hundred seventy-six males from 151 neighborhoods, systematically selected and representative of Western Chitwan. All residents aged 15-59 were eligible (response rate 93%).

MEASUREMENTS

Measures of beatings in the community during the conflict (2000-2006), including the date and distance away, were gathered through neighborhood reports, geo-location and official resources, then linked to respondents' life histories of AUD (collected in 2016-2018) using the Nepal-specific Composite International Diagnostic Interview with life history calendar. Beatings nearby predict the subsequent onset of AUD during and after the armed conflict. Data were analyzed in 2021-2022.

FINDINGS

Cohort-specific, discrete-time models revealed that within the youngest cohort (born 1992-2001), those living in neighborhoods where armed conflict beatings occurred were more likely to develop AUD compared with those in other neighborhoods (odds ratio = 1.66; 95% confidence interval = 1.02-2.71). In this cohort, a multilevel matching analysis designed to simulate a randomized trial showed the post-conflict incidence of AUD for those living in neighborhoods with any armed conflict beatings was 9.5% compared with 5.3% in the matched sample with no beatings.

CONCLUSIONS

Among male children living in Chitwan, Nepal during the 2000-2006 armed conflict, living in a neighborhood where armed conflict beatings occurred is associated with increased odds of developing subsequent alcohol use disorder. This association was independent of personal exposure to beatings and other mental disorders.

Health effects associated with exposure to intimate partner violence against women and childhood sexual abuse: a burden of proof study

The health impacts of intimate partner violence against women and childhood sexual abuse are not fully understood. Here we conducted a systematic review by comprehensively searching seven electronic databases for literature on intimate partner violence-associated and childhood sexual abuse-associated health effects. Following the burden of proof methodology, we evaluated the evidence strength linking intimate partner violence and/or childhood sexual abuse to health outcomes supported by at least three studies. Results indicated a moderate association of intimate partner violence with major depressive disorder and with maternal abortion and miscarriage (63% and 35% increased risk, respectively). HIV/AIDS, anxiety disorders and self-harm exhibited weak associations with intimate partner violence. Fifteen outcomes were evaluated for their relationship to childhood sexual abuse, which was shown to be moderately associated with alcohol use disorders and with self-harm (45% and 35% increased risk, respectively). Associations between childhood sexual abuse and 11 additional health outcomes, such as asthma and type 2 diabetes mellitus, were found to be weak. Although our understanding remains limited by data scarcity, these health impacts are larger in magnitude and more extensive than previously reported. Renewed efforts on violence prevention and evidence-based approaches that promote healing and ensure access to care are necessary.

Problematic alcohol use in young adults exposed to childhood trauma: The Trøndelag Health (HUNT) Study

Problematic alcohol use (PAU) severely impacts the health, functioning, and long-term prospects of young people. Prior research indicates that childhood trauma exposure may be an important risk factor for PAU, but few longitudinal studies have looked at how specific trauma types influence this risk. The aim of this study was to investigate the association between childhood trauma exposure and PAU in a large, population-based cohort of young people. The study sample included 1,913 adolescents who participated in the Trøndelag Health Study (HUNT) between 2006 and 2008 (age range: 12-20) and completed follow-up 10 years later as young adults (age range: 22-32). The results revealed an increased risk of PAU in young adults exposed to childhood trauma, especially direct physical violence, OR = 2.38, [95% CI 1.56, 3.64]. Young adults who had witnessed violence, OR = 1.55, [95% CI 1.11, 2.17], or experienced an accident, disaster, or other traumatic event, OR = 1.60, [95% CI 1.19, 2.15], also had higher odds of PAU compared to those without such experiences. These associations remained consistent after adjusting for symptoms of headaches and pain as well as posttraumatic and general psychological distress as reported by the participants in adolescence. Future prevention efforts targeting PAU among adolescents and young adults should address violence and other trauma exposure as potential drivers of problematic drinking.

Adverse Childhood Experiences and Risk Patterns of Alcohol and Cannabis Co-Use: A Longitudinal Study of Puerto Rican Youth

PURPOSE

Adverse childhood experiences (ACEs) are common in Puerto Rican youths. Few large longitudinal studies of Latine youth examined what predicts co-use of alcohol and cannabis in late adolescence and young adulthood. We investigated the prospective association between ACEs with alcohol/cannabis co-use in Puerto Rican youth.

METHODS

Participants from a longitudinal study of Puerto Rican youth (n = 2,004) were included. Using multinomial logistic regressions to test associations between prospectively reported ACEs (11 types, reported by parents and/or children, categorized as 0-1, 2-3, and 4+ ACEs) with young adult alcohol/cannabis use patterns in the past month (i.e., no lifetime use, low-risk [no binge drinking and cannabis use < 10], binge-drinking only, regular cannabis use only, and alcohol/cannabis co-use). Models were adjusted for sociodemographic variables.

RESULTS

In this sample, 27.8% reported 4+ ACEs, 28.6% endorsed binge drinking, 4.9% regular cannabis use, and 5.5% alcohol/cannabis co-use. Compared to individuals with no lifetime use, those reporting 4+ (vs. 0-1) ACEs had greater odds of low-risk use (adjusted odds ratio [aOR] 1.60, 95% confidence interval [CI] = 1.04-2.45), regular cannabis use (aOR 3.13 95% CI = 1.44-6.77), and alcohol/cannabis co-use (aOR 3.57, 95% CI = 1.89-6.75). In relation to low-risk use, reporting 4+ ACEs (vs. 0-1) was associated with 1.96 odds (95% CI = 1.01-3.78) of regular cannabis use and 2.24 odds (95% CI = 1.29-3.89) of alcohol/cannabis co-use.

DISCUSSION

Exposure to 4+ ACEs was associated with the occurrence of adolescent/young adulthood regular cannabis use and alcohol/cannabis co-use. Importantly, ACEs exposure differentiated young adults who were co-using compared to those engaged in low-risk use. Preventing ACE or interventions for Puerto Rican youth experiencing 4+ ACEs may mitigate negative consequences associated with alcohol/cannabis co-use.