Smoking status and exercise in relation to PTSD symptoms: A test among trauma-exposed adults

The present investigation examined the interactive effect of cigarette smoking status (i.e., regular smoking vs. non-smoking) and weekly exercise (i.e., weekly metabolic equivalent) in terms of posttraumatic stress (PTSD) symptom severity among a community sample of trauma-exposed adults. Participants included 86 trauma-exposed adults (58.1% female; M_age = 24.3). Approximately 59.7% of participants reported regular (≥10 cigarettes per day) daily smoking over the past year. The interactive effect of smoking status by weekly exercise was significantly associated with hyperarousal and avoidance symptom cluster severity (p ≤ .05). These effects were evident above and beyond number of trauma types and gender, as well as the respective main effects of smoking status and weekly exercise. Follow-up tests indicated support for the moderating role of exercise on the association between smoking and PTSD symptoms, such that the highest levels of PTSD symptoms were observed among regular smokers reporting low weekly exercise levels. Theoretical and clinical implications of the findings are discussed.     

The Role of Anxiety Sensitivity and Eating Expectancy in Maladaptive Eating Behavior

Research has shown that anxiety sensitivity (AS), or the fear of somatic arousal, predicts distress and maladaptive coping in a range of psychiatric conditions. More recently, the role of AS has been examined in pathological eating. In the current investigation, a two-study design was employed to examine the role of AS and eating expectancies in both self-reported and actual eating behavior. For Study 1, 42 overweight/obese participants completed questionnaires assessing AS, as well as eating behaviors and attitudes. In Study 2, 60 participants representing all weight ranges completed the same questionnaire battery and underwent a negative mood induction task followed by food exposure. Results of this study revealed a 3-way interaction between Anxiety Sensitivity Index-mental concerns subscale, Eating Expectancy Inventory—eating leads to feeling out of control subscale, and BMI suggesting that those elevated on all 3 constructs consumed the most calories. Results are discussed in relation to better understanding the role of AS and eating expectancy and its utility in identifying a subset of overweight/obese individuals at risk for maladaptive eating behavior.     

The association between familial ASD diagnosis,autism symptomatology and developmental functioning in young children

Few studies have directly compared individuals with and without a relative diagnosed with ASD on various domains. The present study aimed to examine the relationship between familial ASD diagnosis and the exhibition of ASD symptoms in young children with and without ASD diagnoses. Participants included 8353 children aged 17–37 months old and their families. They were divided into four groups based on individual and family diagnosis, then compared on autism symptomatology and developmental domains. No differences were found between ASD groups on overall scores and each of the factor domains, indicating no association between family ASD diagnosis and ASD symptomatology or developmental functioning. Disparate results were found for atypically developing groups with and without relatives diagnosed with ASD. Implications of these results are discussed.     

A Dietary Intervention High in Green Leafy Vegetables Reduces Oxidative DNA Damage in Adults at Increased Risk of Colorectal Cancer: Biological Outcomes of the Randomized Controlled Meat and Three Greens (M3G) Feasibility Trial

Green leafy vegetables (GLV) may reduce the risk of red meat (RM)-induced colonic DNA damage and colorectal cancer (CRC). We previously reported the primary outcomes (feasibility) of a 12-week randomized controlled crossover trial in adults with habitual high RM and low GLV intake with body mass index (BMI) > 30 kg/m² ({"type":"clinical-trial","attrs":{"text":"NCT03582306","term_id":"NCT03582306"}}NCT03582306). Herein, our objective was to report a priori secondary outcomes. Participants were recruited and enrolled in 2018, stratified by gender, and randomized to two arms: immediate intervention group (IG, n = 26) or delayed intervention group (DG, n = 24). During the 4 week intervention period, participants were provided with frozen GLV and counseled to consume 1 cooked cup equivalent daily. Participants consumed their normal diet for the remaining 8 weeks. At each of four study visits, anthropometrics, stool, and blood were taken. Overall, plasma Vitamin K1 (0.50 ± 1.18 ng/mL, p < 0.001) increased, while circulating 8OHdG (−8.52 ± 19.05 ng/mL, p < 0.001), fecal 8OHdG (−6.78 ± 34.86 ng/mL, p < 0.001), and TNFα (−16.95 ± 60.82 pg/mL, p < 0.001) decreased during the GLV intervention compared to control periods. Alpha diversity of fecal microbiota and relative abundance of major taxa did not differ systematically across study periods. Further investigation of the effects of increased GLV intake on CRC risk is warranted.