Associations Between Perceived Stress and Dietary Intake in Adults in Puerto Rico

Chrononutrition, diet quality and perceived stress: results from two population-based studies in Brazil

Chrononutrition and diet quality appear to influence stress, however, evidence on this relationship needs to be better elucidated. We aim to assess the association between chrononutrition, diet quality, and perceived stress in adults from Southern Brazil. Population-based cross-sectional study conducted in two Brazilian cities, with individuals aged ≥18 years. Chrononutrition and diet quality were the exposure, and perceived stress was the outcome. To assess the associations, Poisson regression was used to calculate crude and adjusted prevalence ratio. 2,170 individuals were analyzed: 12.3% did not have breakfast, 27.5% had less than four meals per day, 30.4% presented poor diet quality, 14% referred irregular consumption of healthy foods, and 43.2% had regular consumption of unhealthy foods. Perceived stress was reported by 38.2% of the sample. Individuals who ate less than four meals per day, with poor diet quality, with regular consumption of unhealthy foods, and with irregular consumption of healthy foods were more likely to present perceived stress. These results may contribute to the development of joint actions on nutrition and mental health.

Higher Dietary Inflammatory Index Score Is Associated With a Greater Risk of High Allostatic Load in US Adults: National Health and Nutrition Examination Survey, 2017-2020

BACKGROUND

Allostatic load (AL) is a comprehensive indicator of chronic stress. Foods with pro-inflammatory properties can increase the risk of elevated AL levels. However, no studies have explored the association between AL and dietary inflammation.

OBJECTIVE

The aim of this study was to investigate the relationship between Dietary Inflammatory Index (DII) scores and AL.

DESIGN

This cross-sectional study examined dietary data from 24-hour dietary recalls and biomarkers associated with AL in adult participants 18 years and older from the National Health and Nutrition Examination Survey (2017-2020).

PARTICIPANTS/SETTING

The National Health and Nutrition Examination Survey examines a nationally representative sample of approximately 5000 individuals each year. A total of 15 560 participants were surveyed during the 2017-2020 period, and 1577 participants were ultimately included in this study.

MAIN OUTCOME MEASURES

Twenty-six dietary components were selected to calculate the DII, and 10 biomarkers representing the cardiovascular, metabolic, and immune systems were chosen to calculate the AL.

STATISTICAL ANALYSES PERFORMED

Logistic regression and linear regression analyses were used to investigate the relationship between DII and AL and between each biomarker. Subgroup analyses were conducted based on sociodemographic variables, including age, sex, race and ethnicity, and BMI.

RESULTS

The risk of high AL was 1.53 times higher in those with DII scores in the highest quartile than in those with DII scores in the lowest quartile (odds ratio [OR] 1.53; 95% CI 1.00 to 2.36; Ptrend = .04). For each unit increase in DII, the probability of having high AL increased by 11% (OR 1.11; 95% CI 1.01 to 1.21; Ptrend = .03). Higher DII scores were significantly associated with higher systolic blood pressure, diastolic blood pressure, pulse, waist-to-hip ratio, and high-sensitivity C-reactive protein levels. Higher DII scores were also significantly associated with lower total cholesterol and high-density lipoprotein cholesterol levels (P < .05). The association between DII score and AL was more pronounced in women (ORQuartile3vs1 2.04; 95% CI 1.15 to 3.61; ORQuartile4vs1 2.07; 95% CI 1.18 to 3.62; Ptrend = .01) and in those with a BMI < 24.9 (ORQuartile3vs1 4.74; 95% CI 1.21 to 18.05; Ptrend = .03).

CONCLUSIONS

This study found that higher DII scores were associated with greater risk of high AL. Further research with more rigorous study designs is needed to build on these results and evaluate the effect of diets with low inflammatory potential (low DII scores) on AL.

Cardiovascular Health Among Young Men and Women in Puerto Rico as Assessed by the Life's Essential 8 Metrics

BACKGROUND

Cardiovascular health (CVH) in young adulthood is associated with CVD in later life, yet CVH in young adults in the United States falls below ideal levels, with noticeable sex differences. Research on CVH in young adults in Puerto Rico is scarce. This study examined CVH and sex differences in CVH in a large cohort of young adults in Puerto Rico.

METHODS AND RESULTS

Data from 2162 Puerto Rican young adults aged 18 to 29 residing in PR were obtained from the PR-OUTLOOK (Puerto Rico Young Adults' Stress, Contextual, Behavioral, and Cardiometabolic Risk) study (2020-2023). Participants were recruited through various media and community outreach. CVH scores, graded on a 0 (worst) to 100 (best) scale, were derived from survey responses, physical exams, and laboratory assays. Linear regression with the margins postestimation command was used to determine adjusted means (95% CIs) for CVH scores by sex, controlling for age, marital status, education, childhood material deprivation, subjective social status, health insurance, and depressive symptoms. CVH was less than ideal (score<80) in 72.6% of the cohort (70.5% of women, 75.9% of men, P<0.05). Men had a significantly lower adjusted mean overall CVH score than women (70.7 versus 73.0) and lower adjusted mean scores for nicotine exposure (78.3 versus 86.7), non-high-density lipoprotein cholesterol (80.6 versus 86.4), and blood pressure (79.5 versus 92.2). Women had a significantly lower adjusted mean physical activity score compared with men (50.4 versus 59.5).

CONCLUSIONS

Less-than-ideal CVH is notable among young adults, with men having worse CVH than women. These identified sex differences warrant further investigation and the design of interventions to enhance and preserve CVH.

Association between perceived stress, emotional eating, and adherence to healthy eating patterns among Saudi college students: a cross-sectional study

BACKGROUND

College students are vulnerable to high perceived stress (PS) and emotional eating (EE) levels, which are associated with their food consumption. In this study, we aimed to examine the links between perceived stress, emotional eating, and adherence to a healthy eating index. Furthermore, we aimed to test whether sociodemographic data and health measures, including body mass index and physical activity, are associated with perceived stress, emotional eating, or healthy eating index.

METHODS

This study included students from King Abdulaziz University. The participants completed validated perceived stress, emotional eating, and short healthy eating index surveys via an online questionnaire from September to December 2022. Univariate linear regression analysis was performed to examine the association between perceived stress, emotional eating, and adherence to healthy eating index using the short healthy eating index.

RESULTS

Of 434 students (49.8% male, mean age 21.7 ± 3.0 years), 11.3% had low, 72.0% moderate, and 16.7% high perceived stress. Students with moderate perceived stress had the highest short healthy eating index score (P = 0.001), outperforming those with low and high perceived stress for fruit juice (P = 0.002), fruits (P[Formula: see text]0.001), vegetables (P=0.03), greens and beans (P<0.001), whole grains (P=0.009), and seafood/plant proteins (P = 0.001) consumption. Also, emotional eating was significantly associated with short healthy eating index score (P = 0.04), fruit juice (P = 0.01) fruit consumption (P<0.001), added sugar (P=0.02) and saturated fatty acids (P = 0.03). Academic major was associated with perceived stress (P = 0.006) and emotional eating (p=0.04). Higher physical activity levels were associated with low perceived stress levels (P<0.001) and high short healthy eating index score (P=0.001), while high body mass index was associated with high emotional eating score (P<0.001).

CONCLUSIONS

The findings confirmed that students are highly vulnerable to moderate and high perceived stress levels. Furthermore, high perceived stress is inversely associated with adherence to a healthy eating index, especially for fruits, vegetables, greens and beans, whole grains, and seafood and plant proteins consumption. Emotional eating, also, associated with students dietary pattern. Physical activity will be beneficial for reducing the level of perceived stress and improving overall dietary patterns.

Association between whole-grain consumption, tryptophan metabolism and psychological distress: a secondary analysis of a randomised controlled trial

This study aimed to investigate whether psychological distress, whole-grain consumption and tryptophan metabolism are associated with participants undergoing weight management intervention. Seventy-nine women and men (mean age 49·7 (sd 9·0) years; BMI 34·2(sd 2·5) kg/m2) participated in a 7-week weight-loss (WL) period and in a 24-week weight maintenance (WM) intervention period. Whole-grain consumption was measured using 4 d food diaries. Psychological distress was assessed with the General Health Questionnaire-12 (GHQ), and participants were divided into three GHQ groups based on the GHQ scores before WL. Tryptophan metabolites were determined from the participants' fasting plasma using liquid chromatography-MS. GHQ scores were not associated with the whole-grain consumption. A positive association was observed between the whole-grain consumption and indole propionic acid (IPA) during the WM (P = 0·033). Serotonin levels were higher after the WL in the lowest GHQ tertile (P = 0·033), while the level at the end of the WM was higher compared with other timepoints in the highest GHQ tertile (P = 0·015 and P = 0·001). This difference between groups was not statistically significant. Furthermore, levels of several tryptophan metabolites changed within the groups during the study. Tryptophan metabolism changed during the study in the whole study group, independently from the level of psychological distress. The association between whole-grain consumption and IPA is possibly explained by the effects of dietary fibre on gut microbiota. This broadens the understanding of the pathways behind the health benefits associated with the intake of whole grains.

Mobile Phone Radiation Deflects Brain Energy Homeostasis and Prompts Human Food Ingestion

Obesity and mobile phone usage have simultaneously spread worldwide. Radio frequency-modulated electromagnetic fields (RF-EMFs) emitted by mobile phones are largely absorbed by the head of the user, influence cerebral glucose metabolism, and modulate neuronal excitability. Body weight adjustment, in turn, is one of the main brain functions as food intake behavior and appetite perception underlie hypothalamic regulation. Against this background, we questioned if mobile phone radiation and food intake may be related. In a single-blind, sham-controlled, randomized crossover comparison, 15 normal-weight young men (23.47 ± 0.68 years) were exposed to 25 min of RF-EMFs emitted by two different mobile phone types vs. sham radiation under fasting conditions. Spontaneous food intake was assessed by an ad libitum standard buffet test and cerebral energy homeostasis was monitored by ³¹phosphorus-magnetic resonance spectroscopy measurements. Exposure to both mobile phones strikingly increased overall caloric intake by 22–27% compared with the sham condition. Differential analyses of macronutrient ingestion revealed that higher calorie consumption was mainly due to enhanced carbohydrate intake. Measurements of the cerebral energy content, i.e., adenosine triphosphate and phosphocreatine ratios to inorganic phosphate, displayed an increase upon mobile phone radiation. Our results identify RF-EMFs as a potential contributing factor to overeating, which underlies the obesity epidemic. Beyond that, the observed RF-EMFs-induced alterations of the brain energy homeostasis may put our data into a broader context because a balanced brain energy homeostasis is of fundamental importance for all brain functions. Potential disturbances by electromagnetic fields may therefore exert some generalized neurobiological effects, which are not yet foreseeable.