Relationships Among the Physical and Social Home Food Environments, Dietary Intake, and Diet Quality in Mothers and Children

Lifestyle Factors Counteract the Neurodevelopmental Impact of Genetic Risk for Accelerated Brain Aging in Adolescence

BACKGROUND

The transition from childhood to adolescence is characterized by enhanced neural plasticity and a consequent susceptibility to both beneficial and adverse aspects of one's milieu.

METHODS

To understand the implications of the interplay between protective and risk-enhancing factors, we analyzed longitudinal data from the Adolescent Brain Cognitive Development (ABCD) Study (n = 834; 394 female). We probed the maturational correlates of positive lifestyle variables (friendships, parental warmth, school engagement, physical exercise, healthy nutrition) and genetic vulnerability to neuropsychiatric disorders (major depressive disorder, Alzheimer's disease, anxiety disorders, bipolar disorder, schizophrenia) and sought to further elucidate their implications for psychological well-being.

RESULTS

Genetic risk factors and lifestyle buffers showed divergent relationships with later attentional and interpersonal problems. These effects were mediated by distinguishable functional neurodevelopmental deviations spanning the limbic, default mode, visual, and control systems. More specifically, greater genetic vulnerability was associated with alterations in the normative maturation of areas rich in dopamine (D2), glutamate, and serotonin receptors and of areas with stronger expression of astrocytic and microglial genes, a molecular signature implicated in the brain disorders discussed here. Greater availability of lifestyle buffers predicted deviations in the normative functional development of higher density GABAergic (gamma-aminobutyric acidergic) receptor regions. The two profiles of neurodevelopmental alterations showed complementary roles in protection against psychopathology, which varied with environmental stress levels.

CONCLUSIONS

Our results underscore the importance of educational involvement and healthy nutrition in attenuating the neurodevelopmental sequelae of genetic risk factors. They also underscore the importance of characterizing early-life biomarkers associated with adult-onset pathologies.

See Me, Hear Me, Know Me: Perspectives on Diet and Physical Activity Influences among Teens Living in Rural Texas Communities

Teens in rural communities are at greater risk of obesity than teens in urban areas. Diet and physical activity influence obesity risk. Understanding their perspectives is an important step in intervention design. This qualitative investigation explored teen perspectives on how living in a rural community influenced their diet and physical activity choices. Forty parent-teen pairs were recruited. Data collection included surveys and telephone interviews. This paper reports teen perspectives identified in the first interview. Thematic analysis was used to code and analyze the data. Findings revealed that the primary factor driving teens' diet and physical activity behaviors was the teens themselves. They clearly understood their role in the choices they made, although they acknowledged not always making the healthiest choice. This belief was driven by their motivation to engage in healthy behaviors, which was influenced by the perceived benefits derived from making healthy choices and from the synergistic relationship between diet and physical activity. Diet and physical activity, in turn, were influenced by the environment, particularly the home, social, and community environments. Family and friends were particularly influential, as well as resource availability. These findings can serve as a foundation for designing interventions tailored to this population.

Parent meal self-efficacy and practices in households with healthy home food environments in the face of economic hardship

Some families who experience economic hardship demonstrate remarkable strength and resourcefulness to sustain a healthy home food environment. This ability to navigate economic barriers could be associated with parent meal practices that promote children's healthful dietary intake. Therefore, this study aimed to examine 1) whether parent meal self-efficacy and practices were associated with economic assistance status and home fruit and vegetable (FV) availability and 2) how parent meal self-efficacy and practices differed by home FV availability and economic assistance status. Analyses utilized baseline data from 274 parent/child dyads from two childhood obesity prevention trials: HOME Plus (urban) and NU-HOME (rural). Parents in households with high FV availability (regardless of economic assistance) had significantly higher self-efficacy in preparing healthy foods, family dinner routines, frequency of child's plate being half filled with FV, frequency of family dinner and breakfast, and lower frequency of purchasing dinner from fast food restaurants. Economic assistance was not associated with parent meal self-efficacy and practices. Four family groups were created and defined by economic assistance (yes/no) and home FV availability (high/low). About 31% of families that received economic assistance and had high home FV availability were food insecure. Families (n = 39) receiving economic assistance and having high home FV availability had greater frequency of family dinners compared to those in households with economic assistance and low home FV availability (n = 47) (p = 0.001); no other parent meal self-efficacy or practices differed between groups. Our findings suggest some families can maintain healthy home food environments despite economic hardship and frequent family dinners may be an important strength for these families. More research is needed to investigate asset-based models to understand the family strengths that enable them to thrive during difficult times.

A Narrative Review of Dietary Assessment Tools for Preschool-Aged Children in the Home Environment

Preschool-aged children in the U.S. have suboptimal diets. Interventions to improve child nutrition focus on parents and their role in shaping social and physical home environments, which influence children's eating behaviors. Dietary assessment tools selected to measure intervention objectives, and how results are interpreted in key findings, are essential when examining children's diets. The objectives of this review were to (1) describe dietary assessment tools used in intervention studies in young children focused within the home environment; and (2) examine how the application of these dietary assessment tools addressed intervention objectives. PubMed and Web of Science were searched for English-language nutrition intervention studies that included children aged 2-5 years, had a home environment component, used a dietary assessment tool, and reported on diet-related outcomes. Seventeen studies were included. Intervention objectives focused on overall diet, specific food groups, eating occasions, and obesity prevention/treatment. Concordance of key findings with intervention objectives, type of tool used, and multiple tools within the same study varied with 8 studies aligning in objective and tool, 1 discordant in both, and 8 partially concordant or too broad to determine. This review highlights current challenges in measuring dietary intake in preschoolers and provides recommendations for alternative applications and strategies.

More Frequent Food Shopping May Promote Fruit and Vegetable Intake: A Systematic Review

BACKGROUND

Food shopping frequency may be an important modifiable factor related to increasing fruit and vegetable (FV) intake. Because of mixed findings of individual studies of shopping frequency, a systematic review is needed to examine findings across studies and store types.

OBJECTIVE

To conduct a systematic review of articles examining the relationship between frequency of food shopping and FV intake including examination of participation in federal nutrition assistance programs on FV intake, if reported.

METHODS

A search, guided by the Preferred Reported Items for Systematic Reviews and Metanalyses, using terms related to FV consumption and food shopping across 4 online databases, was conducted. Studies conducted in the US and published through October, 2020, included adults, and had a cross-sectional, longitudinal, cohort, or randomized study design were eligible for inclusion.

RESULTS

Twenty-four articles were included. The majority of studies found at least 1 positive finding between the frequency of food shopping and FV intake, indicating that as the frequency of food shopping increased, FV intake increased. In studies with 100% participation in government/federal nutrition assistance programs, participation was associated with FV intake. Studies that included participation as a subset found participation not associated with FV intake.

IMPLICATIONS FOR FUTURE RESEARCH AND PRACTICE

The frequency of shopping may be modifiable to increase FV intake. Experimental research is needed to test the directionality and causality of the relationship. Federal nutrition assistance programs may be a logical place to test the relationship through the adjustment of fund disbursements.