Exposure to early life trauma is associated with adult obesity

Alternate-day fasting differentially affects body composition, metabolic and immune response to fasting in male rats exposed to early-life adversity: Modulatory role of cafeteria diet

The increased risk for obesity and metabolic disorders following early-life adversity is aggravated by poor diet (e.g., cafeteria diet). Alternate-day fasting (ADF) is a dietary regimen shown to improve immune and metabolic dysfunction related to obesity. Here, we evaluate if ADF can ameliorate the negative effects of early-life adversity and/or cafeteria diet on biological, immune and metabolic parameters. At weaning, animals reared under normal or adverse conditions (i.e., low bedding) were fed either standard chow or cafeteria diets ad libitum or subjected to an ADF regimen. In adulthood, we measured 24-hour fasted cholesterol, triglycerides, cytokines, oxidative stress markers, and body composition parameters including perigonadal, retroperitoneal, and brown fat pad weight. Animals exposed to early-life adversity respond differently to cafeteria diet and ADF. Adverse reared animals fed chow diet in the ADF regimen showed the largest reduction in body weight and perigonadal and retroperitoneal fat pad weight, the smallest increase in corticosterone levels, and the largest increase in TNF-α levels. However, the differential effects of the ADF regimen on body, perigonadal and retroperitoneal fat weight observed in adversely reared animals fed chow diet compared to controls were not present if the adversely reared animals were fed cafeteria diet in the ADF regimen. Furthermore, adversely reared animals fed cafeteria diet in the ADF regimen showed high IL-1β and IL-6 levels. Together, the data suggest that the altered vulnerability to metabolic and immune dysfunction following early-life adversity is not just due to the type of diet but also how the diet is consumed.

Understanding the bidirectional association between obesity and risk of psychological distress and depression in young adults in the US: available evidence, knowledge gaps, and future directions

While the physical health effects of obesity are well-characterized, an emerging branch of research has shown that obesity additionally plays a critical role in one's mental health. Young adults, in a pivotal transition phase in their lives, may be particularly prone to the concurrent effects of obesity and adverse mental health outcomes. The purpose of this review is to comprehensively examine existing data regarding the connection between obesity and two widely validated measures of mental health: psychological distress and depression. The connection between mental health outcomes and obesity is mediated by a complex interplay between biological and sociocultural factors, which is explored in this review with particular focus on younger adults aged 20-39. Further, the impact of several demographic factors including race/ethnicity, gender, and immigration status are examined closely. To our knowledge, this review is one of the first efforts to integrate existing knowledge between obesity and mental health, with particular regard for young adults and the impact of other key sociodemographic characteristics. This review has important implications at the interface of two of the most pressing public health crises in the United States.

Childhood adversity trajectories and weight status in young adult men: a register-based study including 359,783 Danish men

BACKGROUND

Childhood adversity has previously been associated with overweight and obesity in adult life, but there is a need for larger population-based studies using prospectively obtained adversity trajectories across childhood to confirm these associations. Moreover, childhood adversity may also be associated with underweight, which is less often studied. The aim of the current study is to investigate the association between childhood adversity trajectories from 0-15 years with weight categories in young adult men.

METHODS

The Danish Life Course Cohort (DANLIFE) was linked with the Danish Conscription Registry resulting in a study sample of 359,783 men, who have been assigned to one of five previously identified adversity trajectories from 0-15 years: "low adversity", "early material deprivation", "persistent material deprivation", "loss or threat of loss", and "high adversity". Height and weight in young adulthood was assessed at a draft board examination at age 18-26 years. Associations of adversity trajectories and weight categories were investigated in multinomial regression models.

RESULTS

Compared with the "low adversity" group, the four other adversity groups had higher risks of underweight, overweight, and obesity. The "high adversity" group showed the strongest associations with both underweight (1.44 (1.32, 1.58)) and obesity (1.50 (1.39, 1.61)) when adjusted for parental origin, birth year, age at draft board examination, and maternal age.

CONCLUSION

Childhood adversity, experienced between 0 and 15 years of life, was associated with a higher risk of underweight, overweight, and obesity in young adulthood among men.

Cumulative environmental stress and emerging cardiometabolic risk during childhood

OBJECTIVE

To prospectively evaluate the relationship between cumulative environmental stress and cardiometabolic risk in middle childhood, and to examine whether hair cortisol, a measure of hypothalamic pituitary adrenal-axis activity, mediates this relationship.

METHODS

In a cohort of children from low-income households (n = 320; 59% Hispanic, 23% Black, body mass index (BMI) percentile >50th at enrollment), environmental stressors including family and neighbourhood factors representing disadvantage/deprivation, and cortisol concentrations from hair samples, were measured over five timepoints beginning when children were 2-4 years old. Cardiometabolic risk factors (i.e., BMI, blood pressure, lipids, blood sugar, C-reactive protein) were measured at the final timepoint when children were 7-11 years of age.

RESULTS

In adjusted logistic regression models, greater cumulative environmental stress was associated with a higher likelihood of elevated cardiometabolic risk in middle childhood (p = 0.01). Children from minoritized racial/ethnic groups had a higher prevalence of both stressors and cardiometabolic risk factors. Cumulative environmental stress was associated with higher hair cortisol concentrations (p < 0.01). However, hair cortisol was not directly associated with cardiometabolic risk factors and did not explain the association between environmental stress and cardiometabolic risk in causal mediation analysis.

CONCLUSIONS

The influence of cumulative stress on cardiometabolic health can be observed in middle childhood and may contribute to cardiometabolic health disparities, highlighting the importance of public health interventions to mitigate disadvantage.

A hamster model for stress-induced weight gain

This review addresses the translational relevance of animal models of stress and their effects on body weight. In humans, stress, whether chronic or acute, has often been associated with increased food intake and weight gain. In view of the current obesity epidemic, this phenomenon is especially relevant. Such observations contrast with reports with commonly used laboratory animals, especially rats and mice. In these species, it is common to find individuals gaining less weight under stress, even with potent social stressors. However, there are laboratory species that present increased appetite and weight gain under stress, such as golden hamsters. Furthermore, these animals also include metabolic and behavioral similarities with humans, including hoarding behavior which is also enhanced under stress. Consequently, we propose that our comparative perspective provides useful insights for future research on the development of obesity in humans as a consequence of chronic stress exposure.

Increased Cardiometabolic Risk in Healthy Young Adults With Early Life Stress

OBJECTIVE

This study aimed to evaluate the relationship between early life stress (ELS) and metabolic risk in healthy young adults and assess the role of health behaviors.

METHODS

Young adults aged 18 to 40 years ( N = 190) with no medical conditions or medication usage were recruited from the community. Participants with ELS ( N = 113) had a history of childhood maltreatment, and most also experienced parental loss ( n = 88). Controls ( N = 77) had no history of maltreatment or parental loss. Standardized interviews and self-reports assessed demographics, adversity, medical/psychiatric history, and health behaviors. Blood pressure and anthropometrics were measured, and fasting plasma assayed for lipid profiles, glucose, insulin level, and hemoglobin A 1c . We calculated both a clinical cut-point and continuous composite metabolic risk score based on clinical risk factors and the mean of z scores of each measure, respectively.

RESULTS

ELS was significantly associated with increased clinical cut-point ( β = 0.68, 95% confidence interval [CI] = 0.20-1.17, p = .006) and continuous ( β = 0.23, 95% CI = 0.08-0.038, p = .003) composite metabolic risk scores. On sensitivity analysis, the association of ELS with the continuous composite metabolic risk score was reduced to a trend after adjusting for a range of psychosocial and health predictors ( β = 0.18, 95% CI = 0.00-0.36, p = .053), with both diet and college graduate status significant in the model.

CONCLUSIONS

Healthy young adults with a history of ELS have increased metabolic risk scores as compared with controls. This relationship may be partially due to health behaviors and socioeconomic factors. These findings underline that ELS is an early contributor to metabolic risk.

Disentangling the effects of depression and perceived stress on cortisol levels in individuals with obesity: Preliminary results from a cross-sectional study

BACKGROUND

Hypothalamic-pituitary-adrenal (HPA) axis dysregulation has been suggested to play a role in the association between depression and obesity. The study aimed to investigate differences in cortisol levels in individuals with obesity with and without depression and the role of perceived stress on these differences.

METHODS

Saliva samples were collected at awakening, 15-, 30- and 60-minutes post-awakening from 66 individuals with obesity (30 with major depressive disorder and 36 without major depressive disorder). Salivary cortisol was analysed using ELISA technique. Linear Mixed Models were used for group differences in cortisol awakening response (CAR) with adjustment for socio-demographic confounders and binge eating.

RESULTS

Individuals with obesity and depression had lower CAR compared with individuals with obesity without depression (β = -0.44; p = 0.036). When controlling for perceived stress, CAR was no longer influenced by depression (β = -0.09; p = 0.75), but individuals with moderate/high stress had lower CAR compared with those with low stress (β = -0.63; p = 0.036).

CONCLUSIONS

Our results suggest that differences in CAR between individuals with obesity with and without depression could be due to higher levels of perceived stress in the depressed subjects.

The impact of body image dissatisfaction on psychological distress and health-related quality of life among patients in methadone treatment

BACKGROUND AND OBJECTIVES

Minimal research has examined body image dissatisfaction (BID) among patients receiving methadone maintenance treatment (MMT). We tested associations between BID and MMT quality indicators (psychological distress, mental and physical health-related quality of life [HRQoL]) and whether these associations varied by gender.

METHODS

One hundred and sixty-four participants (n = 164) in MMT completed self-report measures of body mass index (BMI), BID, and MMT quality indicators. General linear models tested if BID was associated with MMT quality indicators.

RESULTS

Patients were primarily non-Hispanic White (56%) men (59%) with an average BMI in the overweight range. Approximately 30% of the sample had moderate or marked BID. Women and patients with a BMI in the obese range reported higher BID than men and patients with normal weight, respectively. BID was associated with higher psychological distress, lower physical HRQoL, and was unrelated to mental HRQoL. However, there was a significant interaction in which the association between BID and lower mental HRQoL was stronger for men than women.

DISCUSSION AND CONCLUSIONS

Moderate or marked BID is present for about three in 10 patients. These data also suggest that BID is tied to important MMT quality indicators, and that these associations can vary by gender. The long-term course of MMT may allow for assessing and addressing novel factors influencing MMT outcomes, including BID.

SCIENTIFIC SIGNIFICANCE

This is one of the first studies to examine BID among MMT patients, and it highlights MMT subgroups most at risk for BID and reduced MMT quality indicators due to BID.

Academy of Nutrition and Dietetics: Revised 2022 Standards of Practice and Standards of Professional Performance for Registered Dietitian Nutritionists (Competent, Proficient, and Expert) in Adult Weight Management

A person's weight is an anthropometric measure factored into assessing health risk, not a measure of worth, ability, or overall health. Adult weight management is a spectrum of life-long care services available for persons whose goals can be achieved through evidence-based, weight-related interventions and intersects most practice areas of nutrition. The adult weight management Registered Dietitian Nutritionist (RDN) is responsible for providing a psychologically safe, accessible, and respectful setting and empowering care to those seeking nutrition services. This requires the RDN to act as an advocate by proactively seeking to identify personal and external weight biases, understanding the impact of those predispositions, and acknowledging how weight-related prejudices are intricately connected with systems that impact nutrition both inside and outside of health care. Increases in average weight influence potentially counterproductive discussions about judgment, an individual's body, and relationship with health. RDNs are equipped to provide dynamic care and be on the forefront of implementing weight-inclusive built environments, policies, and person-centered communications to minimize harm and maximize benefit for the individual and society. The authors, Weight Management Dietetic Practice Group, and the Academy of Nutrition and Dietetics Quality Management Committee revised the Standards of Practice (SOP) and Standards of Professional Performance (SOPP) for RDNs in Adult Weight Management to update established criteria of competent practice, further define core values, and set direction for future areas of opportunity. The adult weight management SOP and SOPP are complementary tools intended for RDNs to benchmark and identify progressive routes and goals for professional advancement.

The Impact of Life Trauma on Mental Health and Suicidal Behavior: A Study from Portuguese Language Countries

Several studies report the incidence of traumatic experiences in community and clinical samples, and substantial research demonstrates the impact of traumatic events on mental health and suicidal behavior, but this area remains unexplored in the Community of Portuguese Language Countries (CPLC). Thus, this study aims to (1) describe traumatic experiences, mental health levels and suicidal behavior among individuals from Portugal, Brazil and African Countries with Portuguese as an Official Language (ACPOL); (2) assess correlations between traumatic experiences and mental health and suicidal behavior; and (3) assess the impact of exposure to a traumatic event on mental health and suicidal behavior. The measurement instruments included a sociodemographic questionnaire, Brief Trauma Questionnaire, Brief Symptoms Inventory-18, and the Portuguese version of the Suicidal Behaviors Questionnaire-Revised. ACPOL participants reported greater impact of war, Portuguese participants reported greater impact of disasters, and Brazilian participants reported greater impact of psychological and sexual abuse, assault, and death of a family member. Brazilian participants showed the worst levels of mental health and suicidal thoughts. Strong correlations were found between traumatic experiences and mental health levels and suicidal behavior. Traumatic experiences contributed to the explanation of mental health levels and probability of committing suicide.

The association between distress tolerance and eating expectancies among trauma-exposed college students with obesity

Objective Obesity is a significant health concern among college populations, and trauma-exposed students are particularly at risk for behaviors associated with weight gain. There is need for further understanding of factors that may contribute to increased obesity among this population. Participants: Participants included 139 trauma-exposed college students with obesity (76.3% females; M_age = 25.4 years, SD = 8.07). Method: The current cross-sectional study examined distress tolerance in terms of expectancies of eating to help manage negative affect and to lead to feeling out of control among trauma-exposed college students with obesity. Results: Results indicated that lower perceived distress tolerance was associated with greater expectancies of eating to help manage negative affect and to lead to feeling out of control. Conclusions: These findings suggest that distress tolerance may be a clinically significant target for treatment in order to better understand and treat expectancies of eating among trauma-exposed college students with obesity.

Developmental Timing of Trauma in Women Predicts Unique Extracellular Vesicle Proteome Signatures

BACKGROUND

Exposure to traumatic events is a risk factor for negative physical and mental health outcomes. However, the underlying biological mechanisms that perpetuate these lasting effects are not known.

METHODS

We investigated the impact and timing of sexual trauma, a specific type of interpersonal violence, experienced during key developmental windows of childhood, adolescence, or adulthood on adult health outcomes and associated biomarkers, including circulating cell-free mitochondrial DNA levels and extracellular vesicles (EVs), in a predominantly Black cohort of women (N = 101).

RESULTS

Significant changes in both biomarkers examined, circulating cell-free mitochondrial DNA levels and EV proteome, were specific to developmental timing of sexual trauma. Specifically, we identified a large number of keratin-related proteins from EVs unique to the adolescent sexual trauma group. Remarkably, the majority of these keratin proteins belong to a 17q21 gene cluster, which suggests a potential local epigenetic regulatory mechanism altered by adolescent trauma to impact keratinocyte EV secretion or its protein cargo. These results, along with changes in fear-potentiated startle and skin conductance detected in these women, suggest that sexual violence experienced during the specific developmental window of adolescence may involve unique programming of the skin, the body's largest stress organ.

CONCLUSIONS

Together, these descriptive studies provide novel insight into distinct biological processes altered by trauma experienced during specific developmental windows. Future studies will be required to mechanistically link these biological processes to health outcomes.

Associations between adverse home environments and appetite hormones, adipokines, and adiposity among Chilean adolescents

Little is known regarding the relationship between adverse home environments and hormones important in regulation of appetite and their impact on obesity in children and adolescents. In this study, we examined the impact of socioeconomic economic status, family stress and maternal depressive symptoms on appetite hormones, adipokines and adiposity. To determine whether adverse home environments in childhood and adolescence relate to adiposity in adolescence and disruptions in appetite hormones and adipokines, specifically lower levels of adiponectin and ghrelin and elevated levels of leptin and orexin. Adversity in the home (maternal depressive symptoms, family stress, socioeconomic disadvantage) was measured in the households of 593 Chilean youth at age 10 years (52.3% male) and in 606 youth at 16 years. At 16 years, participants provided fasting blood samples for assessment of adipokines and appetite hormones. Waist-to-height ratio was used to assess central adiposity. Correlational analyses examined associations between continuous levels of adversity in childhood and adolescence and appetite hormones and adiposity in adolescence. Multinomial logistic regressions compared hormone levels by tertiles of adversity. Participants were 52% male, with average age at the 16 years hormone assessment being 16.8 (n = 606, SD = 0.26). Those with highest maternal depression at age 10 had lower adiponectin OR = 0.95 [95% CI: 0.91, 0.99], p = 0.005) and ghrelin levels (OR = 0.98 [95% CI: 0.98, 1.00), p = 0.022) than those in the lowest maternal depression group at age 16. Those with the highest family stress at 16 years had lower adiponectin levels (OR = 0.93 [95% CI: 0.89, 0.98), p = 0.004) and higher central adiposity (OR = 1.05 [1.01, 1.08], p = 0.009) than the lowest family stress group. There were no significant associations found between socioeconomic status at either 10 or 16 years and appetite hormones. Results add new evidence regarding the relationship between household adversity to appetite hormones and adipokines, with the most consistent results for adiponectin. Current findings suggest that the relationship between home environment and adipokines and appetite hormones may play a role in altered adiposity in children and adolescents.

A Longitudinal Study of Life Trauma, Chronic Stress and Body Mass Index on Weight Gain over a 2-Year Period

The United States is facing an alarming and increasing obesity epidemic. Stress is associated with obesity, but specific longitudinal effects of life trauma on weight gain have not been assessed. Here we examined if life trauma and chronic stress predicted weight gain while also measuring the impact of body mass index (BMI). Life trauma and chronic stress were assessed with the Cumulative Adversity Interview (CAI). Weight and BMI were captured repeatedly over a two-year period. Results show significant increases in weight gain over time. Individuals with obesity (IOb) reported significantly higher levels of life trauma at the onset compared to overweight (IOw) and lean individuals (Il). Greater numbers of trauma events were associated with increased weight gain for both IOb and IOw but not for Il. Increased chronic stress was not consistently associated with weight gain over time. Current findings suggest the need to address trauma coping, especially in vulnerable individuals to prevent greater weight gain and curb obesity-related health outcomes.

Disentangling sex differences in the shared genetic architecture of posttraumatic stress disorder, traumatic experiences, and social support with body size and composition

There is a well-known association of traumatic experiences and posttraumatic stress disorder (PTSD) with body size and composition, including consistent differences between sexes. However, the biology underlying these associations is unclear. To understand the genetic underpinnings of this complex relationship, we investigated genome-wide datasets informative of African and European ancestries from the Psychiatric Genomic Consortium, the UK Biobank, the GIANT Consortium, and the Million Veteran Program. We used genome-wide association statistics to estimate sex-specific genetic correlations (r g ) of traumatic experiences, social support, and PTSD with multiple anthropometric traits. After multiple testing corrections (false discovery rate, FDR q < 0.05), we observed 58 significant r g relationships in females (e.g., childhood physical abuse and body mass index, BMI r g  = 0.245, p = 3.88 × 10-10) and 21 significant r g relationships in males (e.g., been involved in combat or exposed to warzone and leg fat percentage; r g  = 0.405, p = 4.42 × 10-10). We performed causal inference analyses of these genetic overlaps using Mendelian randomization and latent causal variable approaches. Multiple female-specific putative causal relationships were observed linking body composition/size with PTSD (e.g., leg fat percentage→PTSD; beta = 0.319, p = 3.13 × 10-9), traumatic experiences (e.g., childhood physical abuse→waist circumference; beta = 0.055, p = 5.07 × 10-4), and childhood neglect (e.g., "someone to take you to doctor when needed as a child"→BMI; beta = -0.594, p = 1.09 × 10-5). In males, we observed putative causal effects linking anthropometric-trait genetic liabilities to traumatic experiences (e.g., BMI→childhood physical abuse; beta = 0.028, p = 8.19 × 10-3). Some of these findings were replicated in individuals of African descent although the limited sample size available did not permit us to conduct a sex-stratified analysis in this ancestry group. In conclusion, our findings provide insights regarding sex-specific causal networks linking anthropometric traits to PTSD, traumatic experiences, and social support.

Dysregulated resting state functional connectivity and obesity: A systematic review

Obesity has been variously linked to differences in brain functional connectivity in regions associated with reward, emotional regulation and cognition, potentially revealing neural mechanisms contributing to its development and maintenance. This systematic review summarizes and critically appraises the existing literature on differences in resting state functional connectivity (Rs-FC) between overweight and individuals with obesity in relation healthy-BMI controls. Twenty-nine studies were identified and the results consistently support the hypothesis that obesity is associated with differences in Rs-FC. Specifically, obesity/overweight was consistently associated with (i) DMN hypoconnectivity and salience network hyperconnectivity; (ii) increased Rs-FC between the hypothalamus and reward, limbic and salience networks, and decreased Rs-FC between the hypothalamus and cognitive regions; (iii) increased power within regions associated with inhibition/emotional reasoning; (iv) decreased nodal efficiency, degree centrality, and global efficiency. Collectively, the results suggest obesity is associated with disrupted connectivity of brain networks responsible for cognition, reward, self-referential processing and emotional regulation.

Lifelong enhancement of body mass from adolescent stress in male hamsters

In hamsters, exposure to stress in adulthood causes increased body weight. We addressed how social stress during puberty would impact food intake and body weight. Stressed hamsters started gaining significantly more weight than controls after only two days of stress exposure. Over a two-week period, stressed subjects gained 10% more weight and consumed more food than controls. At the end of the stress period, stressed hamsters collected nearly twice as many palatable sugar pellets from an arena than controls. Stressed subjects presented 15-20% more body fat in mesenteric, inguinal, and retroperitoneal fat pads. In order to assess the duration of these effects, we analyzed data from previous studies keeping hamsters for over two months past the stress period in puberty. Our analysis shows that stressed hamsters stopped gaining more weight after the stress period, but their body weights remained elevated for over two months, consistently weighing 10% more than their non-stressed counterparts. We also analyzed conditioning training data collected after the period of stress in late puberty and early adulthood (P56 to P70) that was part of the original studies. Training consisted of lever pressing for palatable food rewards. At these times, previously stressed hamsters retrieved similar numbers of food pellets from the conditioning chambers, suggesting no difference in appetite after the stress period. These data showing a long-lasting effect of stress on body weight may be relevant to studies on the ontogeny of lifelong obesity.

Substance use, mental health and weight-related behaviours during the COVID-19 pandemic in people with obesity

Studies have shown the negative impact of COVID-19 lockdown orders on mental health and substance use in the general population. The aim of this study was to examine the impact of the COVID-19 pandemic onsubstance use, mental health and weight-related behaviors in a sample of adults with obesity after lockdown orders were lifted (June-September 2020). A retrospective medical chart review identified patients with obesity from one university-based obesity medicine clinic, and two metabolic and bariatric surgery (MBS) practices. Patients who completed an online survey from June 1, 2020 to September 30, 2020 were included. The primary outcome measure was substance use (various drugs, alcohol, tobacco). Substance use and mental health survey questions were based on standardized, validated instruments. A total of 589 patients (83.3% female, mean age 53.6 years [SD 12.8], mean BMI 35.4 [SD 9.1], 54.5% Non-Hispanic white, 22.3% post-MBS) were included. Seventeen patients (2.9%) tested positive for SARS-CoV-2 and 13.5% reported symptoms. Nearly half (48.4%) of the sample reported recreational substance use and 9.8% reported increased use since the start of the pandemic. There was substantial drug use reported (24.3% opioids, 9.5% sedative/tranquilizers, 3.6% marijuana, and 1% stimulants). Patients who reported stockpiling food more (adjusted Odds Ratio [aOR] 1.50, 95% CI 1.03-2.18), healthy eating more challenging (aOR 1.47, 95% CI 1.01-2.16), difficulty falling asleep (aOR 1.64, 95% CI 1.14-2.34), and anxiety (aOR 1.47, 95% CI 1.01-2.14) were more likely to report substance use versus non-users. Results here show that the COVID-19 pandemic is having a deleterious impact on substance use, mental health and weight-related health behaviors in people with obesity regardless of infection status.

Mindful Attention and Eating Expectancies among College Students with Obesity and a History of Trauma Exposure

Objectives

Trauma exposure and obesity are highly prevalent among college students and both are associated with disordered eating. There is a need to understand psychological factors that may be related to maladaptive eating behavior among college students with obesity and a history of trauma exposure.

Methods

Participants included 139 college students with obesity (defined as a BMI ≥ 30) and a history of trauma exposure (76.3% females; M _age = 25.4 years, SD = 8.07). The current study conducted three separate two-step hierarchical regressions examining mindful attention, and its relation to eating expectancies (expectancies of eating to help manage negative affect, expectancies of eating to alleviate boredom, and expectancies of eating to lead to feeling out of control).

Results

Results indicated that lower levels of mindful attention were related to greater levels of expectancies of eating to help manage negative affect (b = -4.16, SE = 1.08, p = .023, CI_95% = -7.72, -0.60, sr² = .04), expectancies of eating to alleviate boredom (b = -1.09, SE = 0.39, p = .006, CI_95% = -1.86, -0.32, sr² = .06), and expectancies of eating to lead to feeling out of control (b = -1.62, SE = 0.40, p < .001, CI_95% = -2.41, -0.83, sr² = .11). Results were observed over, and above variance accounted for by sex (assigned at birth), body mass index (BMI), and posttraumatic stress disorder (PTSD) symptom severity.

Conclusions

Overall, the results from the present investigation suggest the potential importance and need for future research in the role of mindful attention in relation to several distinct eating expectancies associated with maladaptive eating.

Food Addiction and Psychosocial Adversity: Biological Embedding, Contextual Factors, and Public Health Implications

The role of stress, trauma, and adversity particularly early in life has been identified as a contributing factor in both drug and food addictions. While links between traumatic stress and substance use disorders are well documented, the pathways to food addiction and obesity are less established. This review focuses on psychosocial and neurobiological factors that may increase risk for addiction-like behaviors and ultimately increase BMI over the lifespan. Early childhood and adolescent adversity can induce long-lasting alterations in the glucocorticoid and dopamine systems that lead to increased addiction vulnerability later in life. Allostatic load, the hypothalamic-pituitary-adrenal axis, and emerging data on epigenetics in the context of biological embedding are highlighted. A conceptual model for food addiction is proposed, which integrates data on the biological embedding of adversity as well as upstream psychological, social, and environmental factors. Dietary restraint as a feature of disordered eating is discussed as an important contextual factor related to food addiction. Discussion of various public health and policy considerations are based on the concept that improved knowledge of biopsychosocial mechanisms contributing to food addiction may decrease stigma associated with obesity and disordered eating behavior.

Interpersonal early life trauma is associated with increased cerebral perfusion and poorer memory performance in post-9/11 veterans

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IP-ELT is associated with greater cerebral perfusion in the right inferior/middle temporal gyrus.

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Cerebral perfusion mediates the relationship between IP-ELT and memory, not attention or executive function.

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PTSD diagnosis and severity were not significantly associated with cerebral perfusion.

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Other factors relevant to perfusion did not influence the relationship between IP-ELT and cerebral perfusion.

Cerebral blood flow (CBF) is critically important in the overall maintenance of brain health, and disruptions in normal flow have been linked to the degradation of the brain’s structural integrity and function. Recent studies have highlighted the potential role of CBF as a link between psychiatric disorders and brain integrity. Although interpersonal early life trauma (IP-ELT) is a risk factor for the development of psychiatric disorders and has been linked to disruptions in brain structure and function, the mechanisms through which IP-ELT alters brain integrity and development remain unclear. The goal of this study was to understand whether IP-ELT was associated with alterations in CBF assessed during adulthood. Further, because the cognitive implications of perfusion disruptions in IP-ELT are also unclear, this study sought to investigate the relationship between IP-ELT, perfusion, and cognition. Methods: 179 Operations Enduring Freedom/Iraqi Freedom/New Dawn (OEF/OIF/OND) Veterans and military personnel completed pseudo-continuous arterial spin labeling (pCASL) imaging, clinical interviews, the Traumatic Life Events Questionnaire (TLEQ), and a battery of neuropsychological tests that were used to derive attention, memory, and executive function cognitive composite scores. To determine whether individuals were exposed to an IP-ELT, events on the TLEQ that specifically queried interpersonal trauma before the age of 18 were tallied for each individual. Analyses compared individuals who reported an interpersonal IP-ELT (IP-ELT+, n = 48) with those who did not (IP-ELT-, n = 131). Results: Whole brain analyses revealed that IP-ELT+ individuals had significantly greater CBF in the right inferior/middle temporal gyrus compared to those in the IP-ELT- group, even after controlling for age, sex, and posttraumatic stress disorder (PTSD). Further, perfusion in the right inferior/middle temporal gyrus significantly mediated the relationship between IP-ELT and memory, not attention or executive function, such that those with an IP-ELT had greater perfusion, which, in turn, was associated with poorer memory. Examination of other clinical variables such as current PTSD diagnosis and severity as well as the interaction between IP-ELT and PTSD yielded no significant effects. Conclusions: These results extend prior work demonstrating an association between ELT and cerebral perfusion by suggesting that increased CBF may be an important neural marker with cognitive implications in populations at risk for psychiatric disorders.

Media language preferences and mental illness stigma among Latinx adolescents

PURPOSE

Media-a powerful influence on mental illness stigma-varies by language and culture. Nevertheless, recent meta-analyses have demonstrated scant attention to Spanish language media as well as historically low Latinx participation in mental illness anti-stigma intervention. To better inform how to improve equity in mental health service utilization, this study assessed how language preferences in mass media influence stigma among Latinx adolescents, compared to family language and social preferences.

METHODS

Sixth-graders self-identifying as Latinx self-completed assessments of mental illness knowledge/positive attitudes and desired separation from peers and adolescent vignette characters experiencing mental illness (N = 179; Texas, U.S., 2011-2012). Participants also responded to measures of language preferences (any Spanish versus only English) for consuming media (film/television, music/radio) and speaking with family (parents/grandparents), and social preferences for parties or social gatherings (Latinx versus Anglo persons). Linear regression models adjusting for student and household factors examined the associations between media and family language and social preferences on mental illness stigma.

RESULTS

Latinx adolescents preferring any Spanish versus English-only media reported less mental illness knowledge/positive attitudes and greater social separation from peers and vignette characters with a mental illness, net of all covariates. Family language and social preferences were not associated with any mental illness stigma outcomes.

CONCLUSIONS

Spanish media preference is associated with greater stigma suggesting more stigmatization may exist in Spanish- versus English-media. Ensuring anti-stigma messaging in Spanish media may reduce disparities in mental illness stigma among Latinx adolescents. These findings have implications for populations with other non-English media preferences.

The Association Between Adverse Childhood Experiences (ACEs) and Postoperative Bariatric Surgery Weight Loss Outcomes

PURPOSE

Previous research demonstrates that exposure to adverse childhood experiences (ACEs) is associated with development of obesity. The same mechanisms mediating this relationship could theoretically affect attempts to lose weight in adulthood. However, it is unclear whether or not exposure to ACEs impacts the effectiveness of bariatric surgery. The present study aimed to examine the association of exposure to ACEs to postoperative weight loss outcomes.

MATERIALS AND METHODS

One hundred ninety-eight patients undergoing bariatric surgery were evaluated for their exposure to ACEs, determined by a presurgical questionnaire and recorded as an ACEs score. Percent total weight loss (%TWL) was calculated to evaluate postoperative weight loss at 1-, 3-, and 6-month intervals postoperatively. One hundred forty-two participants were available for follow-up at the 6-month postoperative interval.

RESULTS

The sample consisted of 167 women and 31 men with a mean age of 47.7. Twenty-five percent of participants experienced high exposure to ACEs, defined as experiencing ≥ 4 ACEs. The average %TWL at 6 months was 16.52%. Multilevel modeling found no significant relationship between ACEs score and %TWL at any of the postoperative time intervals, both before and after adjusting for age, sex, and race.

CONCLUSION

High exposure to ACEs was not associated with poorer weight loss outcomes, and participants with a large number of ACEs generally lost the anticipated amount of weight.

The impact of childhood trauma on psychosocial functioning and physical health in a non-clinical community sample of young adults

OBJECTIVE

Given the fundamental emotional, social and physical development that occurs during the early years of life, childhood experiences are formative in shaping a person's life trajectory. Childhood trauma is a prevalent, multifaceted issue with well-documented long-term adverse health effects in clinical populations however; the impact of childhood trauma in the community is less clear. To address this, this study investigated how childhood trauma may impact physical and psychological health, sleep quality and autonomic function in a non-clinical community sample of adults.

METHOD

Participants completed questionnaires, an in-laboratory autonomic assessment (including stress reactivity to mental and physical stressors) and overnight autonomic and sleep monitoring. Overall childhood trauma and its subtypes (e.g. physical abuse, emotional neglect) were defined using the Childhood Trauma Questionnaire.

RESULTS

We identified 22 childhood trauma cases (total score > 36) and, of the 89 non-childhood trauma cases, some individuals also experienced significant levels of trauma in one or more of the childhood trauma subtypes. Childhood trauma and some trauma subtypes were significantly correlated with a myriad of negative physiological and physical health outcomes including elevated psychological distress, increased sleep disturbances, reduced emotional wellbeing and lower perceived social support. Autonomic dysregulation was found in those with high levels of childhood trauma, which was reflected in an increased stress response to laboratory tasks. Notably, the experience of physical abuse in childhood was significantly associated with alterations in nocturnal heart rate and heart rate variability.

CONCLUSION

Together, these results highlight that childhood trauma can have lasting detrimental consequences on an individual's emotional and physical health, sleep quality and stress reactivity.

Deficits in executive function and suppression of default mode network in obesity

•

Using a case-control design, obese individuals exhibited worse performance across a number of neurocognitive tests compared to healthy BMI controls, particularly in tasks measuring executive function.

•

In a functional MRI N-Back task measuring working memory performance, obese individuals exhibited greater BOLD activity in task-negative brain regions, suggesting deficits in suppression of the default mode network (DMN).

•

Obese individuals exhibited differences in cortical morphometry in frontal, temporal, and parietal regions linked to executive function.

•

Integrative analyses implicated aspects of behavioral performance, inefficient DMN suppression, and cortical morphometry.

•

Results suggest that obesity is associated with a diverse range of functional, structural and behavioural deficits in executive functioning; longitudinal studies are needed to clarify causal versus consequential influences.

Background

Although nutritional and metabolic factors are well established in obesity, neurocognitive determinants are less understood. Using data from the Human Connectome Project, this study concurrently investigated neurocognitive performance, neural activation during a working memory task, and cortical brain morphometry in relation to obesity in a group of young adults, 22–35 years old.

Methods

Using a case-control design, obese individuals (n = 243, body mass index [BMI] ≥ 30 kg/m²) were compared to a control group of lean BMI individuals (n = 469, BMI = 18–24.9 kg/m²). Performance tests comprised a battery of behavioral neurocognitive assessments. Neural activity was measured as blood-oxygenation-level-dependent (BOLD) activity during an N-Back task using functional magnetic resonance imaging (fMRI). Cortical morphometry included indices of volume, thickness, and surface area.

Results

Relative to the control group, the obese group exhibited significantly worse performance in terms of the National Institutes of Health Toolkit (NIH) 9-Hole Peg Board, Penn Working Memory Test, Delay Discounting, Penn Progressive Matrices, NIH Picture Vocabulary Test, Dimensional Change Card Sort Test and the in-scanner N-Back working memory test (FDR-corrected ps<0.05; ds = 0.231–0.405). The obese group also exhibited significantly greater BOLD activation in N-Back task-negative regions, including the ventromedial prefrontal cortex, posterior cingulate, and right precentral gyrus (FDR-corrected ps<0.05). Supplemental functional connectivity analyses provided evidence that the implicated regions were part of the default mode network. Significant differences in morphometry were present in the medial orbitofrontal cortex, rostral anterior cingulate cortex, inferior and superior parietal gyri, and temporal pole (FDR-corrected p<0.001). A data-driven integrative model classified 73.8% of participants correctly.

Conclusions and Relevance

This multimodal investigation suggests diverse aspects of neurocognition are associated with obesity, particularly implicating deficits in executive function and ineffective suppression of the default mode network.

Childhood exposure to violence is associated with risk for mental disorders and adult's weight status: a community-based study in Tunisia

BACKGROUND

We sought to investigate the relationship between social violence and adult overweight/obesity and the role of common mental disorders (CMD) in mediating this relationship.

METHODS

A cross-sectional study was conducted from January to June 2016 in Tunisia. Participants were selected from randomly selected Primary Health Care Centers. The Arabic version of the Adverse Childhood Experiences-International Questionnaire (ACE-IQ) was used.

RESULTS

A total of 2120 participants were included. Women exposed to social ACEs had higher rates of overweight/obesity than men (13.5 versus 9.5%; P = 0.004). For women, statistically significant partial mediation effects of CMD were observed for exposure to community violence (% mediated = 17.7%). For men, partial mediation was found for the exposure to peer violence (% mediated = 12.5%).

CONCLUSION

Our results provide evidence of the independent increase of overweight/obesity after exposure to social ACEs. Efforts to uncover and address underlying trauma in health care settings may increase the effectiveness of obesity interventions.

Adolescent views of mental illness stigma: An intersectional lens

Differences in mental illness (MI) stigma among adolescents were examined cross-sectionally across race, ethnicity, and gender to identify target populations and cultural considerations for future antistigma efforts. An ethnically and socioeconomically diverse sample of sixth graders (N = 667; mean age = 11.5) self-completed assessments of their MI-related knowledge, positive attitudes, and behaviors toward peers with MI and adolescent vignettes described as experiencing bipolar (Julia) and social anxiety (David) symptoms. Self-reported race, ethnicity, and gender were combined to generate 6 intersectional composite variables: Latino boys, Latina girls, non-Latina/o (NL) Black boys, NL-Black girls, NL-White boys, and NL-White girls-referent. Linear regression models adjusting for personal and family factors examined differences in stigma using separate and composite race, ethnicity, and gender variables. In main effects models, boys and Latina/o adolescents reported greater stigma for some outcomes than girls and NL-White adolescents, respectively. However, intersectional analyses revealed unique patterns. NL-Black boys reported less knowledge/positive attitudes than NL-Black and White girls. NL-Black and Latino boys reported greater avoidance/discomfort than NL-White girls. Moreover, NL-Black girls and boys and Latina/o girls and boys wanted more social separation from peers with mental illness than NL-White girls; NL-Black boys also reported more separation than NL-White boys, NL-Black girls, and Latina girls. Finally, NL-Black boys and Latina girls wanted more distance from David than NL-White and Black girls. Vital for informing future antistigma interventions, this study generates new knowledge about how differences in views about MI exist across racial and ethnic identity, and how gender intersects with these perceptions. (PsycINFO Database Record (c) 2020 APA, all rights reserved).

Violence Victimization Predicts Body Mass Index One Decade Later among an Urban Sample of African American Young Adults: Sex as a Moderator and Dehydroepiandrosterone as a Mediator

Psychological stressors such as violence victimization are known contributors to obesity. However, moderators and mediators of this association have not been studied, although they might offer pathways for intervention or prevention. Using a sample of African American young adults, this study tested: (1) the moderating effect of sex on the effect of violence victimization on trajectories of body mass index (BMI), and (2) the mediating effect of dehydroepiandrosterone (DHEA) on this association. This 13-year longitudinal study followed 73 male and 80 female African American young adults who lived in an urban area from 1999 to 2012 when the youth were 20-32 years old. The independent variable was violence victimization measured in 1999 and 2000. The dependent variable was BMI measured in 2002 and 2012. The mediator was DHEA measured in 2001 and 2002. Multilevel path analysis was used to test if males and females differed in violence victimization predicting change in BMI (Model I) and the mediating effect of DHEA change on the above association (Model II). The results of Model I suggested that the change in violence victimization from 1999 to 2000 predicted change in BMI from 2002 to 2012 for females, but not males. Based on Model II, the DHEA change from 2000 to 2001 for females fully mediated the association between violence victimization from 1999 to 2000 and increases in BMI from 2002 to 2012. Our findings suggest that violence victimization in urban areas contributes to the development of obesity among African American female young adults and change in DHEA mediates this link. Violence prevention may have important implications for obesity prevention of African American young women who live in unsafe urban areas. This study also suggests that DHEA may be involved in the violence victimization-obesity link for African American women.

Home and Family Environment Related to Development of Obesity: A 21-Year Longitudinal Study

BACKGROUND

Early-life conditions are important for the development of obesity. We hypothesized that home and family characteristics reflective of less supportive environments during childhood will be associated with higher adult BMI and faster BMI growth between ages 5 and 21 years. We also examined the timing and acceleration of BMI increase by adult weight status (normal weight, overweight, obese, and extremely obese) to discern how BMI increase differs across group and across time.

METHODS

BMI was assessed in 1000 Chilean youth (52% female) at ages 5, 10, 15, and 21 years. Latent growth curve analysis modeled BMI trajectories from 5 to 21 years. Observer and maternal ratings assessed children's home and family environments and parenting at 1 and 10 years.

RESULTS

The four weight groups differed in acceleration of BMI increase starting at age 5, with bigger children getting bigger faster. Higher 21-year BMI related to family stress, father absence, maternal depression, frequent child confinement (in playpen), an unclean home environment at 1 year, and low provision for active stimulation and few stimulating experiences at 10 years. Accelerated BMI increase related to lower learning stimulation in the home at 1 year and less parental warmth and acceptance at child age 10.

CONCLUSIONS

Home and family characteristics that reflect an absence of support for children's development were associated with overweight/obesity in young adulthood and accelerated BMI growth. Findings identify several home and family characteristics that can serve as preventive or intervention targets.

Can the Impact of Interpersonal Violence on Current Health-Related Quality of Life Be Mitigated?

Background: Interpersonal violence continues to affect health long after violence has ended. This analysis investigated stress, support, and health behaviors as mediators potentially explaining persistent health impacts of violence. Methods: Using a cross-sectional analysis of 12,594 women "Wellness, Health & You" (WHY) participants, authors measured violence as intimate partner violence (IPV), sexual assaults (SA), and childhood abuse (CA) by recency (current, past as an adult, or child) and number of violence forms. Current health-related quality of life (HR-QOL) was defined using the most recent survey as physical and mental health limiting usual activities for at least 4 days in the past 30 days. Adjusted prevalence rate ratios (aPRRs) for violence and HR-QOL were obtained using multiple variable log binomial regression where each mediator was included in separate models with demographic attributes. Results: In this sample of middle-aged women, half (n = 6307) had ever experienced violence (38.3% IPV, 12.9% SA, and 24.6% CA) and 19.9% reported multiple forms. IPV, SA, and CA were each associated with poorer current HR-QOL, yet, WHY participants experiencing all three forms had a sixfold increased rate of poor mental HR-QOL (Model 1: aPRRs = 6.23 [95% confidence interval, 95% CI: 4.87-7.97]) versus no violence. Stress was the mediator associated with the greatest change in aPRRs (-34.7%; Model 2: aPRR = 4.07 [95% CI: 3.13-5.30]). When all mediators were included (Model 5: aPRR = 3.01 [95% CI: 2.29-3.96]), partial mediation was observed, evidenced by nonoverlapping CIs between Models 1 and 5. Conclusions: Of relevance for interventions are findings that current health impacts of past violence may be mitigated through reducing current stress.

The impact of interpersonal early life trauma on cardio-metabolic health in post-9/11 veterans

OBJECTIVE

This study examined the impact of early life trauma (ELT) on cardio-metabolic health in veterans from post-9/11 conflicts who experience significant stress from deployment and reintegration.

METHOD

Three hundred thirty-seven veterans from the Translational Research Center for Traumatic Brain Injury and Stress Disorders study underwent physiological assessments, including blood pressure and waist circumference. Fasting blood samples were collected to measure metabolic syndrome (MetS; cholesterol/triglycerides/glucose). ELT history was determined using the Traumatic Life Events Questionnaire. Posttraumatic stress disorder (PTSD) symptoms were assessed using the Clinician-Administered PTSD Scale. Logistic regression models examined the association of ELT and MetS diagnostic criteria while controlling for confounders.

RESULTS

The adjusted logistic regression showed a significant relationship between interpersonal ELT (IP ELT) and risk of MetS, with IP ELT having an approximately 3-fold increase in the risk of cardio- metabolic syndrome compared with those with no trauma (odds ratio [OR] = 3.06, p < .05). IP ELT was associated with over a 2-fold increased risk of elevated triglycerides compared with those with no trauma (OR = 2.06, p < .05). PTSD symptoms also explained in part the IP-ELT/MetS relationship. Veterans with any ELT were significantly more likely to meet for a current diagnosis of PTSD.

CONCLUSIONS

Our findings suggest that veterans with IP ELT are more likely to meet MetS and PTSD diagnostic criteria than veterans without IP ELT. This is concerning considering the young age of the sample and stresses the importance of an integrated and holistic approach in the assessment of physical and mental health in returning veterans. (PsycINFO Database Record (c) 2019 APA, all rights reserved).

Influence of Acute Physical Activity on Stress Reactivity in Obese and Normal Weight Children: A Randomized Controlled Trial

OBJECTIVE

Physical activity (PA) may influence acute stress reactivity in children differently depending on their weight. This randomized controlled trial investigated the impact of acute PA and of BMI status (overweight/obese (OB/OW) and normal weight (NW) on stress reactivity.

METHOD

50 prepubertal children (24 OW/OB and 26 NW) were randomly assigned to the PA or sedentary arm (SED) for 30 min followed by a stress task. Salivary cortisol, blood pressure (BP), and heart rate (HR) were measured.

RESULTS

An interaction effect between the randomization arms and weight status on salivary cortisol was found after the stress task (p = 0.04). Cortisol increased in the SED, but not in the PA arm (p = 0.004 for differences in time course) of NW children. Time course did not differ between both arms in OW/OB children (p = 0.7). OW/OB SED children had a flat cortisol course, and levels were reduced compared to the NW SED or the OW/OB PA children (p ≤ 0.03). Systolic BP increased only in the SED arm (p = 0.01). HR was higher in the PA than in the SED arm during stress (p < 0.001) and showed different time courses (p = 0.006).

CONCLUSION

PA impacted on acute stress reactivity and influenced stress reactivity differently in NW and OW/OB children.

Body mass index, peer victimization, and body dissatisfaction across 7 years of childhood and adolescence: Evidence of moderated and mediated pathways

Numerous studies have reported that children and adolescents who are overweight are more likely to get bullied, yet the literature is replete with methodological limitations. We examined the transactional associations between peer victimization and body mass index (BMI), considering potential mediating (body dissatisfaction) and moderating (biological sex) factors. Participants (n = 631) came from the McMaster Teen Study, where students were assessed annually between Grades 5-11, approximately half were girls (53.9%), and the majority were white (76.4%). Peer victimization (from Grade 5) and body dissatisfaction (from Grade 6) were self-reported by students, while parents reported their child's height and weight (from Grade 5). Cascade models were built up sequentially using path analysis across 2-year increments (Grades 5, 7, 9, and 11). The final model had excellent fit to the data (χ²  = 73.961, df = 66, p = 0.234). Grade 5 peer victimization had a direct effect on BMI across a 2-year period in girls (b = 0.59, SE = 0.21, p = 0.005) and boys (b = 0.82, SE = 0.30, p = 0.006), and an indirect effect on BMI via body dissatisfaction across a 4-year period (b = 0.074, 95% CI = 0.012-0.152, p = 0.036). At no point did BMI directly increase risk for peer victimization, yet there were indirect effects via body dissatisfaction among girls but not boys. Peer victimization and body dissatisfaction were proximally and longitudinally related at every time point and there was a transactional association in late-adolescence among girls but not boys. Targeting modifiable factors in the social (peer victimization) and psychological (body dissatisfaction) domains may limit accelerated weight gain and the health risks associated with excess adiposity.

Associations of lifetime traumatic experience with dysfunctional eating patterns and postsurgery weight loss in adults with obesity: A retrospective study

This study aimed to examine the associations of lifetime traumatic experience with presurgery and postsurgery eating pathology and postoperative weight loss in a sample of adult bariatric surgery patients using electronic medical record (EMR) data. Presurgery lifetime exposure to traumatic event, presurgery and postsurgery dysfunctional eating patterns, and post-operative total and excess weight losses were extracted from electronic medical records of 200 adult bariatric surgery patients in 2013 and 2014. Logistic regression analyses were conducted. During their lifetime, 60.5% of the patients (81.5% women, age = 44.4 ± 11.5 years; BMIpre = 44.9 ± 5.5 kg/m² ) reported that they were exposed to a traumatic event. Before surgery, trauma exposure was associated with impulsive, compulsive, or restrictive eating patterns (OR = 2.40), overeating or disturbed eating (OR = 1.55), and grazing or night eating behaviours (OR = 1.72). After surgery, trauma exposure was associated with lower total weight loss at 6 (OR = 2.06) and 24 months (OR = 2.06), and to overeating or disturbed eating (OR = 1.53) 12 months after surgery. Bariatric surgery candidates with a history of trauma exposure could benefit from closer medical, dietetic, and/or psychological follow-up care to avoid insufficient postoperative weight loss as well as reappearance of dysfunctional eating patterns after surgery.

Are adverse childhood experiences and depression associated with impaired glucose tolerance in females? An experimental study

Adverse childhood experiences (ACE) enhance the risk for mental disorders, e.g. major depressive disorder (MDD). Increasing evidence suggests an association between ACE and impaired physical health, e.g. metabolic syndrome. The aim of this study was to assess several metabolic risk markers in healthy individuals with and without ACE and depressed patients with and without ACE. We examined glucose and insulin release in the oGTT in 33 women with MDD and ACE, 47 women with MDD without ACE, 21 women with ACE but no current or lifetime MDD and 36 healthy women without either MDD or ACE. Several metabolic markers such as triglycerides, cholesterol, LDL, HDL, HbA1c, BMI and waist to hip ratio were assessed. The four groups did neither differ in insulin release and glucose concentrations in the oGTT nor with respect to other metabolic variables. Depressed patients with and without psychotropic medication did not differ in any outcome variable, but there was a trend towards higher glucose concentrations in the oGTT in patients with current psychotropic medication. In this physically healthy sample neither ACE nor MDD were associated with metabolic risk factors. Thus, metabolic alterations might not directly be linked to ACE and depression.

Childhood Maltreatment and BMI Trajectory: The Mediating Role of Depression

INTRODUCTION

Childhood maltreatment is associated with later obesity, but the underlying mechanisms are unknown. The objective of this study was to estimate the extent to which depression mediates the associations between childhood maltreatment and BMI in adolescence through adulthood.

METHODS

Data on a cohort of 13,362 adolescents in the National Longitudinal Study of Adolescent to Adult Health (Wave I [1994-1995] to Wave IV [2008-2009]) were analyzed in 2015-2016. Classes of maltreatment experienced prior to age 12 years were statistically identified using latent class analysis. Gender-stratified latent growth curve analysis was used to estimate total effects of maltreatment classes on latent BMI trajectory (aged 13-31 years) and indirect effects of maltreatment classes that occurred through latent depression trajectory (aged 12-31 years).

RESULTS

Four latent maltreatment classes were identified: high abuse and neglect; physical abuse dominant; supervisory neglect dominant; and no/low maltreatment. In girls, compared with no/low maltreatment, supervisory neglect dominant (coefficient=0.3, 95% CI=0.0, 0.7) and physical abuse dominant (coefficient=0.6, 95% CI=0.1, 1.2) maltreatment were associated with faster gain in BMI. Change in depression over time fully mediated the association of BMI slope with physical abuse dominant maltreatment, but not with supervisory neglect dominant maltreatment. In boys, high abuse and neglect maltreatment was associated with marginally greater BMI at baseline (coefficient=0.7, 95% CI= -0.1, 1.5); this association was not mediated by depression.

CONCLUSIONS

Although maltreatment was associated with depression and BMI trajectories from adolescence to adulthood, depression only mediated associations with physical abuse dominant maltreatment in girls.

Food addiction and substance addiction in women: Common clinical characteristics

Food addiction is characterized by poorly controlled intake of highly-palatable, calorically-dense, foods. While previous studies indicate that risk factors for food addiction are similar to substance use disorders (SUD), these studies have looked at food addiction and SUD in independent samples, limiting the ability to directly compare food addiction to SUD. The present study was conducted to assess rates of posttraumatic stress disorder (PTSD), depression, childhood and adult trauma exposure, as well as presence and severity of emotion dysregulation, in a sample of women (N = 229) who either meet criteria for no addiction, food addiction only or SUD only. The prevalence of food addiction was 18.3% and the prevalence of SUD was 30.6% in this sample. Women with food addiction and women with SUD endorsed more depression and PTSD symptoms when compared with individuals with no addiction. Individuals with food addiction and SUD had higher total emotion dysregulation scores, specifically with difficulties in goal directed behaviors, non-acceptance of emotional responses, impulse control, limited access to emotion regulation strategies, and lack of emotional clarity, when compared to individuals with no addiction (all p's < 0.05). There were no differences in PTSD and depression symptoms and emotion dysregulation scores between food addiction and SUD groups (all p > 0.05). However, women with SUD endorsed higher levels of total childhood (p < 0.01) and adulthood trauma (p < 0.01) as compared with women with no addiction or food addiction. These results suggest that women with food addiction and those with SUD share similar psychological characteristics and risk factors, with the exception of trauma histories. These findings have implications for the detection of risk for and treatment of these disorders.

Measuring Childhood Adversity in Life Course Cardiovascular Research: A Systematic Review

OBJECTIVE

Identifying the life course health effects of childhood adversity is a burgeoning area of research, particularly in relation to cardiovascular disease (CVD). However, adversity measurement varies widely across studies, which may hamper our ability to make comparisons across studies and identify mechanisms linking adversity to CVD. The purposes of this review are to summarize adversity measurement approaches in the context of CVD, identify gaps, and make recommendations for future research.

METHODS

PubMed and PsycINFO searches were conducted through June 2016. Studies were selected if CVD end point or predisease risk markers were investigated in association with a measure of childhood adversity. Forty-three studies were reviewed. A meta-analysis was not conducted because of the variation in exposures and outcomes assessed.

RESULTS

Adversity measurement was heterogeneous across studies. Metrics included different sets of adverse events, relational factors, and socioeconomic indicators. Thirty-seven percent measured childhood adversity prospectively, 23% examined a CVD end point, and 77% treated adversity as an unweighted summary score. Despite the heterogeneity in measurement, most studies found a positive association between childhood adversity and CVD risk, and the association seems to be dose-response.

CONCLUSIONS

The literature on childhood adversity and CVD would benefit from improving consistency of measurement, using weighted adversity composites, modeling adversity trajectories over time, and considering socioeconomic status as an antecedent factor instead of a component part of an adversity score. We suggest conceptual and analytic strategies to enhance, refine, and replicate the observed association between childhood adversity and CVD risk.

Medical comorbidity in bipolar disorder: The link with metabolic-inflammatory systems

BACKGROUND

Bipolar disorder (BD) is associated with chronic low-grade inflammation, several medical comorbidities and a decreased life expectancy. Metabolic-inflammatory changes have been postulated as one of the main links between BD and medical comorbidity, although there are few studies exploring possible mechanisms underlying this relationship. Therefore, the aims of the current narrative review were 1) synthesize the evidence for metabolic-inflammatory changes that may facilitate the link between medical comorbidity and BD and 2) discuss therapeutic and preventive implications of these pathways.

METHODS

The PubMed and Google Scholar databases were searched for relevant studies.

RESULTS

Identified studies suggested that there is an increased risk of medical comorbidities, such as autoimmune disorders, obesity, diabetes and cardiovascular disease in patients with BD. The association between BD and general medical comorbidities seems to be bidirectional and potentially mediated by immune dysfunction. Targeting the metabolic-inflammatory-mood pathway may potential yield improved outcomes in BD; however, further study is needed to determine which specific interventions may be beneficial.

LIMITATIONS

The majority of identified studies had cross-sectional designs, small sample sizes and limited measurements of inflammation.

CONCLUSIONS

Treatment and prevention of general medical comorbidities in mood disorders should include preferential prescribing of metabolically neutral agents and adjunctive lifestyle modifications including increased physical activity, improved diet and decreased substance abuse. In addition, the use of anti-inflammatory agents could be a relevant therapeutic target in future research.

Sex-dependent effects of early life inflammatory pain on sucrose intake and sucrose-associated hippocampal Arc expression in adult rats

We hypothesize that dorsal hippocampal (dHC) neurons, which are critical for episodic memory, form a memory of a meal and inhibit the initiation of the next meal and the amount ingested during that meal. In support, we showed previously that (1) consuming a sucrose meal induces expression of the synaptic plasticity marker activity-regulated cytoskeleton-associated protein (Arc) in dHC neurons and (2) reversible inactivation of these neurons immediately following a sucrose meal accelerates the onset of the next meal and increases the size of that meal. These data suggest that hippocampal-dependent memory inhibits intake; therefore, the following experiments were conducted to determine whether hippocampal-dependent memory impairments are associated with increased intake. We reported recently that one episode of early life inflammatory pain impairs dHC-dependent memory in adult rats. The present study determined whether neonatal inflammatory pain also increases sucrose intake and attenuates sucrose-associated Arc expression. Male and female Sprague-Dawley rats were given an intraplantar injection of the inflammatory agent carrageenan (1%) on the day of birth and sucrose intake and sucrose-associated dHC Arc expression were measured in adulthood. Neonatal inflammatory pain increased sucrose intake in adult female and male rats, decreased sucrose-associated dHC Arc expression in female rats, and tended to have a similar effect on Arc expression in male rats. Neonatal inflammatory pain significantly decreased the interval between two sucrose meals in female but not in male rats. Morphine administration at the time of insult attenuated the effects of injury on sucrose intake. Collectively, these findings indicate that one brief episode of inflammatory pain on the day of birth has a long long-lasting, sex-dependent impact on intake of a palatable food in adulthood.

Early-life adversity accelerates cellular ageing and affects adult inflammation: Experimental evidence from the European starling

Early-life adversity is associated with accelerated cellular ageing during development and increased inflammation during adulthood. However, human studies can only establish correlation, not causation, and existing experimental animal approaches alter multiple components of early-life adversity simultaneously. We developed a novel hand-rearing paradigm in European starling nestlings (Sturnus vulgaris), in which we separately manipulated nutritional shortfall and begging effort for a period of 10 days. The experimental treatments accelerated erythrocyte telomere attrition and increased DNA damage measured in the juvenile period. For telomere attrition, amount of food and begging effort exerted additive effects. Only the combination of low food amount and high begging effort increased DNA damage. We then measured two markers of inflammation, high-sensitivity C-reactive protein and interleukin-6, when the birds were adults. The experimental treatments affected both inflammatory markers, though the patterns were complex and different for each marker. The effect of the experimental treatments on adult interleukin-6 was partially mediated by increased juvenile DNA damage. Our results show that both nutritional input and begging effort in the nestling period affect cellular ageing and adult inflammation in the starling. However, the pattern of effects is different for different biomarkers measured at different time points.

Childhood Maltreatment Is an Independent Risk Factor for Prediabetic Disturbances in Glucose Regulation

AIMS

Childhood maltreatment (CM) is shown to be associated with obesity and depression. However, the relationship of CM to prediabetic state is much less studied. We tested the hypothesis that CM increases the risk for prediabetic state due to glucose intolerance, reduced insulin sensitivity, and beta cell function.

METHODS

Oral glucose tolerance test (OGTT)-derived metabolic parameters of glucose tolerance, insulin sensitivity, and beta cell function were measured in 121 participants aged 19-60 years. CM exposure was measured using the Childhood Trauma Questionnaire. Blood samples were collected to measure the inflammatory factors.

RESULTS

After controlling for age, race, gender, education, and depression, about 15% higher glucose area under the OGTT curve was observed in the CM group. CM individuals also exhibited impaired insulin sensitivity manifested by the Matsuda index and homeostasis model assessment of insulin resistance, which were correlated with CM severity after adjusting for depression. CM group showed approximately 50% lower disposition index. C-reactive protein and tumor necrosis factor-α levels were greater in the CM group vs. the non-CM group, and both were correlated with CM severity (r = 0.21, 0.23, respectively, both p < 0.05). Multiple regression analyses revealed that CM contributed to reduced insulin sensitivity and lower disposition index independent of depression and visceral fat mass.

CONCLUSION

These data suggest an important relationship between CM and increased risk for prediabetic state due to glucose intolerance, impaired insulin sensitivity, and beta cell function. Our findings indicate that CM appears to be an independent risk factor for developing prediabetes.

Food insecurity as a driver of obesity in humans: The insurance hypothesis

Integrative explanations of why obesity is more prevalent in some sectors of the human population than others are lacking. Here, we outline and evaluate one candidate explanation, the insurance hypothesis (IH). The IH is rooted in adaptive evolutionary thinking: The function of storing fat is to provide a buffer against shortfall in the food supply. Thus, individuals should store more fat when they receive cues that access to food is uncertain. Applied to humans, this implies that an important proximate driver of obesity should be food insecurity rather than food abundance per se. We integrate several distinct lines of theory and evidence that bear on this hypothesis. We present a theoretical model that shows it is optimal to store more fat when food access is uncertain, and we review the experimental literature from non-human animals showing that fat reserves increase when access to food is restricted. We provide a meta-analysis of 125 epidemiological studies of the association between perceived food insecurity and high body weight in humans. There is a robust positive association, but it is restricted to adult women in high-income countries. We explore why this could be in light of the IH and our theoretical model. We conclude that although the IH alone cannot explain the distribution of obesity in the human population, it may represent a very important component of a pluralistic explanation. We also discuss insights it may offer into the developmental origins of obesity, dieting-induced weight gain, and anorexia nervosa.

A Substance Called Food: Long-Term Psychodynamic Group Treatment for Compulsive Overeating

Obesity has proven difficult to treat. Many approaches neglect to address the deep-rooted underlying psychological issues. This paper describes a psychodynamically oriented approach to treating compulsive overeating as an addiction. Common to all addictions is a compulsion to consume a substance or engage in a behavior, a preoccupation with using behavior and rituals, and a lifestyle marked by an inability to manage the behavior and its harmful consequences. The approach represents a shift away from primarily medical models of intervention to integrated models focusing on the psychological underpinnings of obesity. Long-term psychodynamic group psychotherapy is recommended as a primary treatment.

The impact of adverse childhood experiences on obesity and unhealthy weight control behaviors among adolescents

BACKGROUND

Childhood abuse and other early-life stressors associate with being overweight or obese later in life. In addition to being overweight, unhealthy weight control behaviors (e.g., vomiting, using diet pills, fasting, and skipping meals) have been shown to be common among adolescents. To our knowledge, the association between these behaviors and adverse childhood experiences (ACEs) remains unexamined.

METHODS

We examined the association of ACEs to body mass index (BMI) and unhealthy weight control behaviors among 449 Finnish adolescents aged 12 to 17years admitted to an acute psychiatric hospital unit between April 2001 and March 2006. We used the Schedule for Affective Disorders and Schizophrenia for School-Age Children Present and Lifetime (K-SADS-PL) and the European Addiction Severity Index (EuropASI) to obtain information about ACEs, psychiatric diagnoses and weight control behaviors. BMI was calculated using the weight and height measured for each adolescent upon admission.

RESULTS

Girls who experienced sexual abuse were more likely to be obese (OR: 2.6; 95% CI: 1.1-6.4) and demonstrate extreme weight loss behaviors (EWLB) (OR: 2.2; 95% CI: 1.0-4.7). Among girls, parental unemployment is associated with an increased likelihood of obesity (OR: 3.5; 95% CI: 1.2-9.6) and of being underweight (OR: 3.6; 95% CI: 1.1-11.6). A proneness for excessively exercising was found among girls who had witnessed domestic violence (OR: 3.5; 95% CI: 1.4-9.2) and whose parent(s) had died (OR: 5.4; 95% CI: 1.1-27.7).

CONCLUSION

This study showed that female adolescents with a history of traumatic experiences or difficult family circumstances exhibited an elevated likelihood of being obese and engaging in unhealthy weight control behaviors.

Childhood trauma in obese and overweight women with food addiction and clinical-level of binge eating

Childhood trauma (CT) is considered a major risk factor for several disorders as well as for the development of eating psychopathology and adult obesity. The main aims of the present study were to assess in overweight and obese women: (i) the independent association between CT and food addiction (FA), and (ii) CT in patients with both FA and clinical-level of binge eating (BE), versus patients who only engage in FA or BE. Participants were 301 overweight and obese women seeking low-energy-diet therapy. All of the patients were administered self-report measures investigating FA, BE, CT, anxiety and depressive symptoms. CT severity was moderately and positively associated with both FA (r=0.37; p<0.001) and BE (r=0.36; p<0.001) severity. The association between FA and CT remained significant after controlling for potential confounding variables. Furthermore, compared to patients without dysfunctional eating patterns, the co-occurrence of FA and BE was associated with more severe CT as well as with more severe psychopathology (i.e., anxiety and depressive symptoms) and higher BMI. Our results suggest that clinicians should carefully assess the presence of CT in individuals who report dysfunctional eating patterns in order to develop treatment approaches specifically for obese and overweight patients with a history of CT.