Insomnia: Sex differences and age of onset in active duty Army soldiers

Association of Insomnia, Lipid Profile, and Lipid-Lowering Medications: A Narrative Review

Sleep is a fundamental phenomenon that helps maintain normal physiological processes. Conversely, sleep disorders, usually presented as insomnia, are a common public health problem that can lead to multiple pathophysiological changes in humans, including lipid metabolic abnormality. Interestingly, several previous studies have examined the potential relation of insomnia to metabolic syndrome and hyperlipidemia and found that insomnia was associated with elevated plasma cholesterol and triglyceride concentrations. This review summarizes evidence regarding the linkage between insomnia and lipid abnormalities. Moreover, the underlying physiologic mechanisms linking insomnia to lipid abnormalities are systemically discussed. Finally, issues with lipid-lowering drugs and the risk of insomnia are also presented. This knowledge can improve our understanding of the pathophysiological features of insomnia, which may help to prevent and treat insomnia-induced dyslipidemia clinically.

Contribution of post-trauma insomnia to depression and posttraumatic stress disorder in women service members: findings from the Millennium Cohort Study

STUDY OBJECTIVES

We examined whether women service members and veterans who reported recent combat and/or sexual trauma experiences had a greater risk of insomnia compared with women who did not report these recent experiences, and whether insomnia would be associated with a greater risk of mental health outcomes.

METHODS

We analyzed two waves of survey data (2011-2013, Time 1 [T1] and 2014-2016, Time 2 [T2]) from 26 443 current and former women service members from the Millennium Cohort Study. We assessed recent traumas in the past 3 years, and probable insomnia at T1 and probable post-traumatic stress disorder (PTSD) and depression at T2. A longitudinal mediation model was used to quantify separate indirect effects of recent traumas on mental health outcomes through probable insomnia.

RESULTS

Women who had experienced recent sexual assault (odds ratio [OR] = 1.68; 95% CI = 1.24-2.10), sexual harassment (OR = 1.22; 95% CI = 1.05-1.41), and combat (OR = 1.34; 95% CI = 1.20-1.49) at T1 had a greater risk of probable insomnia at T1 compared with women who had not recently experienced these events. Probable insomnia at T1, in turn, was associated with probable depression (OR = 2.66; 95% CI = 2.31-3.06) and PTSD (OR = 2.57; 95% CI = 2.27-2.90) at T2. Recent combat experience did not moderate the associations of recent sexual trauma with insomnia or mental health outcomes.

CONCLUSIONS

Insomnia contributes to the risk of subsequent mental health conditions following trauma. The diagnosis and treatment of post-trauma insomnia should be prioritized to mitigate the development of posttraumatic mental health conditions.

Socio-Ecological Context of Sleep: Gender Differences and Couples' Relationships as Exemplars

PURPOSE OF REVIEW

We summarized recent findings on insufficient sleep and insomnia, two prominent sleep issues that impact public health. We demonstrate the socio-ecologial impact of sleep health with findings on gender and couples' relationships as exemplars.

RECENT FINDINGS

Robust gender differences in sleep duration and insomnia are due to biological and socio-ecological factors. Gender differences in insufficient sleep vary by country of origin and age whereas gender differences in insomnia reflect minoritized identities (e.g., sexual, gender). Co-sleeping with a partner is associated with longer sleep and more awakenings. Gender differences and couples' sleep were affected by intersecting social and societal influences, which supports a socio-ecological approach to sleep. Recent and seminal contributions to sleep health highlight the importance of observing individual sleep outcomes in a socio-ecological context. Novel methodology, such as global measures of sleep health, can inform efforts to improve sleep and, ultimately, public health.

Gender and Place of Settlement as Predictors of Perceived Social Support, PTSD, and Insomnia among Internally Displaced Adolescents in North-East Nigeria

Previous research has shown that gender affects social support and post-traumatic stress disorders (PTSD). The present study explores the main and interaction effects of gender and place of settlement on social support, PTSD symptoms, and insomnia in internally displaced adolescents (IDAs) in North-east of Nigeria. A stratified sampling method was used to select 109 participants from IDAs living in the camp, while 27 additional IDAs were purposively recruited from those living in the host community. Participants completed measures of Harvard Trauma Questionnaire Part-II, Insomnia Severity Index, and Crisis Support. No significant effects of gender on perceived social support, PTSDs, and insomnia were observed. Place of settlement had a significant effect on social support, with IDAs living in the camp having a higher mean score, while place of settlement had no significant effects on PTSD and insomnia. A significant interaction effect of gender and place of settlements on insomnia was found, with males living in the community having a higher mean score than their female counterparts, as well as both males and females in the camp. In conclusion, there is a need to understand male IDAs who reside in non-camp settings better, including the nature of their challenges, the outcomes they desire, and the limitations they experienced.