Association of Adherence to a Mediterranean Diet with Excess Body Mass, Muscle Strength and Physical Performance in Overweight or Obese Adults with or without Type 2 Diabetes: Two Cross-Sectional Studies.

Overweight and obesity in older adults is associated with disability and is exacerbated by the presence of type 2 diabetes (T2DM). There is emerging evidence that adherence to a Mediterranean diet (MedDiet) reduces adiposity and attenuates physical disability. These cross-sectional studies explored the associations of adherence to a MedDiet with body mass index (BMI), adiposity, muscle strength, and physical performance in older adults without diabetes and in middle-aged or older adults with T2DM. MedDiet adherence was assessed using the Mediterranean Diet Adherence Screener. Fat mass and percent body fat were assessed by dual energy X-ray absorptiometry. Muscle strength was assessed using hand-grip strength, while physical performance was assessed using the Short Physical Performance Battery and gait speed. A total of n = 87 participants with T2DM (T2DM sample: 71.2 ± 8.2 years, BMI: 29.5 ± 5.9) and n = 65 participants without diabetes (non-T2DM sample: 68.7 ± 5.6 years, BMI: 33.7 ± 4.9) were included in these analyses. In the T2DM sample, when controlled for age, gender, and appendicular lean mass index, adherence to a MedDiet was inversely associated with BMI, fat mass, and percent body fat. However, this was no longer maintained in the fully adjusted models. Although, adherence to a MedDiet was positively associated with gait speed (ß = 0.155; p = 0.050) independent of all covariates used. Adherence to a MedDiet may be a suitable dietary strategy for preserving lower body physical function in middle-aged and older adults with T2DM. However, these findings should be further investigated using well-designed randomised controlled trials and prospective cohort studies with a wider range of adherence scores to investigate temporal associations.

Physical and emotional well-being and support in newly diagnosed head and neck cancer patient-caregiver dyads.

The purpose of this study was to examine the physical and emotional well-being and social support in newly diagnosed head and neck cancer (HNC) patients and caregivers and identify sociodemographic, clinical, and behavioral risk factors associated with compromised well-being in patients and caregivers. Newly diagnosed HNC patients and their primary caregivers (N = 72 dyads) completed questionnaires before treatment assessing physical and mental well-being, depression, cancer worry, and open-ended support questions. Patients reported worse physical well-being than caregivers (p < 0.05) but similar levels of mental well-being. Caregivers reported providing emotional and instrumental support most frequently with an emphasis on nutrition and assistance with speech, appearance, and addictions. Both patients and their caregivers reported suboptimal mental well-being and depression. Smoking was associated with compromised well-being in patients, caregivers, and dyads. Compromised well-being in patients and their caregivers was more likely when patients were younger, had worse symptoms, and smoked/consumed alcohol (p < 0.05). While patients face more physical strain than caregivers, both equally confront emotional challenges. Results highlight risk factors for compromised well-being in both patients and their caregivers that should be assessed at diagnosis to guide identification of needed dyadic-focused supportive care resources.

Drug use in the social networks of heroin and cocaine users before and after drug cessation.

The present study examined social control processes in drug cessation among adults. Social control theory posits that the association between drug use and the drug use of a person's social network results from an individual seeking out similar peers. The data included 629 individuals who reported past-year heroin or cocaine use at baseline and had follow-up data in a community study in Baltimore, MD. Negative binomial regression modeling indicated that the reduction in social network drug use was significantly greater for quitters than those who did not quit. Compared to non-quitters at baseline, the incidence rate ratio (IRR) of the number of drug-using network members was 0.86 for quitters at baseline, 0.71 for non-quitters at follow-up, and 0.28 for quitters at follow-up (all p<0.05). These findings support social control theory in adult drug use cessation. Future research should extend the length of follow-up and assess bidirectional influences.

Predictors of sharing injection equipment by HIV-seropositive injection drug users.

Among HIV-positive injection drug users (IDUs), we examined baseline predictors of lending needles and syringes and sharing cookers, cotton, and rinse water in the prior 3 months at follow-up. Participants were enrolled in Intervention for Seropositive Injectors-Research and Evaluation, a secondary prevention intervention for sexually active HIV-positive IDUs in 4 US cities during 2001-2005. The analyses involved 357 participants who reported injecting drugs in the prior 6 months at either the 6- or 12-month follow-up visit. About half (49%) reported at least 1 sharing episode. In adjusted analyses, peer norms supporting safer injection practices and having primary HIV medical care visits in the prior 6 months were associated with reporting no sharing of injection equipment. Higher levels of psychological distress were associated with a greater likelihood of reporting drug paraphernalia sharing. These findings suggest that intervention approaches for reducing HIV-seropositive IDUs' transmission of blood-borne infections should include peer-focused interventions to alter norms of drug paraphernalia sharing and promoting primary HIV care and mental health services.

Externalizing behaviors among children of HIV seropositive former and current drug users: parent support network factors as social ecological risks.

Children affected by their parents' dual drug use and HIV/AIDS face considerable challenges to their psychosocial development, including parent dysfunction and foster care placement. While HIV/AIDS may increase parents' mobilization of social support, their drug use may restrict who is available to help them, with potential implications to the adjustment of their children with whom they remain in contact. This study sought to identify dually affected children's living situations, and parent and parent's support network factors as correlates of children's externalizing problem behaviors. An urban community sample of 462 HIV seropositive, current or former drug-using parents were queried about their children aged 5-15 years old. One hundred ninety-four children were reported by 119 parents. The outcome was children's externalizing behaviors of ever having been suspended or expelled from school, criminal-justice system involvement, or illicit drug or heavy alcohol use. Independent variables included kin and drug users in parent's support network. Generalized estimating equations were used to adjust for the potential correlation of children of the same parent. Among parents, 63% were mothers, 57% current opioid or cocaine users, 85% were African American, 35% had AIDS or CD<200, and 53% had high depressive symptoms (CES-D>or=16); median age was 38. Among children, median age was 12; 23% lived with the nominating parent, 65% with other family, and 11% in non-kin foster care. While only 34% of parents reported child custody, 43% reported daily contact with their child, and 90% reported high emotional closeness. Parents reported externalizing behaviors among 32% of the children. Logistic regression indicated that externalizing behavior was positively associated with parent's physical limitations and proportion of illicit drug users in parent's support network. A significant interaction was found indicating that the effect of parent's support network-level drug use was greater for children living with versus not living with the parent. The model adjusted for parent's current drug use and depressive symptoms, which were not significant. Results indicate that while only a minority of these dually affected children lived with the parent, the parents' physical limitations and embeddedness in drug using support networks, particularly if living with their children, was associated with the children's maladjustment. It is plausible that these factors interfere with parenting, expose the children to conflict or adverse social influences, or obligate children to assume caregiving for their parent. While dually affected children's contact with their parents may have important benefits, results suggest it presents ongoing needs for intervention with the children, their parents, and caregivers.

Microsocial environmental influences on highly active antiretroviral therapy outcomes among active injection drug users: the role of informal caregiving and household factors.

Active injection drug users (IDUs) are at high risk of unsuccessful highly active antiretroviral therapy (HAART). We sought to identify baseline factors differentiating IDUs' treatment success versus treatment failure over time among those taking HAART. Interventions for Seropositive Injectors-Research and Evaluation (INSPIRE) study participants were assessed at baseline and at 6- and 12-month follow-ups. Multinominal regression determined baseline predictors of achieving or maintaining viral suppression relative to maintaining detectable viral loads over 12 months. Of 199 participants who were retained and remained on HAART, 133 (67%) had viral load change patterns included in the analysis. At follow-up, 66% maintained detectable viral loads and 15% achieved and 19% maintained viral suppression. Results indicated that those having informal care (instrumental or emotional support) were 4.6 times more likely to achieve or maintain viral suppression relative to experiencing treatment failure. Those who maintained viral suppression were 3.5 times less likely to live alone or to report social discomfort in taking HAART. Study results underscore the importance of microsocial factors of social network support, social isolation, and social stigma for successful HAART outcomes among IDUs. The findings suggest that adherence interventions for IDUs should promote existing informal HIV caregiving, living with supportive others, and positive medication-taking norms among social networks.