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Combined mental and physical stress is associated with exacerbated cortisol production which may increase risk for the progression of cardiovascular disease in individuals working in high-stress occupations (e.g., firefighters, military personnel, etc.). Carbohydrate (CHO) ingestion prior to physical stress may attenuate cortisol concentrations. This project was the first to investigate the effect of CHO ingestion on cortisol response from combined mental and physical stress. 16 men 21-30 years old were randomly assigned a 6.6% CHO beverage or non-CHO control 15 min prior to performing a dual-concurrent-stress challenge. This consisted of physical stress (i.e., steady state exercise) combined with computerized mental challenges. Blood was sampled 70, 40, and 15 min before exercise, immediately at onset of exercise, 10, 20, 30, 35 min during exercise, and 15, 30, 45, and 60 min after exercise. There was a significant main effect for treatment regarding mean cortisol concentrations (F=5.30, =0.0219). The total area under curve for cortisol was less when CHO was ingested (T=4.07, =0.0048). These findings suggest that CHO ingestion immediately prior to combined mental and physical stress may attenuate cortisol responses.

Background. Different taste preferences correlated with genetic variations may lead to food consumption patterns that contribute to nutrient-related health outcomes such as hypertension. Objectives. The aim of this study was to determine whether single nucleotide polymorphisms (SNPs) in the salt taste receptor genes SCNN1B and TRPV1 affect salt taste perception among normotensive and hypertensive people. Materials and Methods. We conducted a cross-sectional case control study by design consisting of a normotensive and hypertensive group. Participants were 253 adults with age range of 20–82 residing in Mississippi, USA. For each of 128 normotensives and 125 hypertensives, the salt taste recognition threshold and salt taste receptor genotype were determined. Results. The hypertensive group had a higher salt taste recognition threshold than the normotensive group ( P < 0.001 ). The polymorphism of TRPV1, rs4790522, with the AA genotype was associated with a higher salt recognition threshold (lower salt taste sensitivity) in people with hypertension and obesity. Moreover, the polymorphism of TRPV1, rs8065080, and SCNN1B, rs239345, genes were associated with a risk of hypertension ( P = 0.016 and P = 0.024 ). Conclusion. Correlations between SNPs, salt taste sensitivity, and hypertension risk were observed. People with hypertension had a higher salt taste threshold than those with normotension.

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Objectives To determine through systematic review whether parental involvement in interventions to improve eating habits of children was more often associated with positive dietary behavior changes as compared to those with no or low involvement. Methods Web of Science, PsychInfo, PubMed, and EBSCO were searched for studies between 2004–2016 that aimed to change children's (2 to 12 years old) diet quality (diet quality; and 1 or more eating behavior component: fruit (F), vegetables (V), whole grains, lower saturated fat, lower sugar-sweetened beverages (SSB), and intake of calcium-rich foods). Preferred Reporting Items for Systematic Reviews and Meta-Analysis were followed for this review. Parental involvement was classified as low, medium, or high involvement. Diet assessment tools were scored for their reliability and validity. The influence of theoretical framework on outcomes was not included in the current review. Results Of 443 papers, data was extracted from 156 randomized controlled trials, and 26 met inclusion criteria. Most studies focused on the intake of F and/or V or SSB. Most with low parental involvement reported no significant dietary change (12 of 15 diet measures in 8 studies). Half with medium/medium-high involvement found significant diet change (4 of 8 measures, 3 studies). More positive diet change resulted with high parental involvement (13 of 18 measures, 11 studies). All studies with no parental involvement reported significant positive changes except 1 (4 studies, 5 measures); 3 studies incorporated exposure to F&V, 1 aimed to lower SSB. Conclusions Increasing level of parental involvement supports dietary behavior change in children. Without parental involvement, repeated F&V exposure also increases intake. Nutrition professionals should engage parents at multiple time points in child dietary interventions to achieve positive dietary changes. Direct F&V exposure is an option if parental involvement is not feasible. Funding Sources This work was supported by the USDA National Institute of Food and Agriculture through Multistate Hatch Capacity Funds supporting the W-3005 research group and respective universities.