Adherence to Mediterranean diet associated with health-related quality of life in children and adolescents: a systematic review

Adherence to the Mediterranean diet and changes in body mass index

BACKGROUND

Diet is considered a determinant of weight status, however, more evidence is needed for children. The Mediterranean diet (MedDiet) is one of the healthiest worldwide. This study analyzes the prospective association between adherence to the MedDiet at baseline and changes in standardized body mass index (zBMI) and the incidence of excessive weight.

METHODS

1389 children participated with a follow-up of 15 months. Weight, height, and adherence to the MedDiet were measured (baseline and follow-up).

RESULTS

Multiple logistic regression analysis revealed that a high increase in zBMI was associated with lower odds of eating vegetables once [OR 0.74 (95% CI 0.57-0.98)] or more a day [OR 0.68 (95% CI 0.49-0.95)], nuts 2-3 times/week [OR 0.74 (95% CI 0.56-0.97)] or 2 cups of yogurt or/and cheese daily [OR 0.74 (95% CI 0.55-0.99)]. Not consuming each food item was used as reference. Multiple linear regression analysis showed a negative (β = -0.010, p = 0.040) association between the MedDiet at baseline and changes in zBMI at follow-up, significance disappeared (p = 0.082) after final adjustment for baseline zBMI.

CONCLUSION

Baseline MedDiet was not significantly associated with the incidence of excessive weight at follow-up. The MedDiet was positively associated with changes in zBMI, however the effect size was small.

IMPACT

The present longitudinal study contributes knowledge regarding the adherence to Mediterranean diet as a predictive variable of weight status evolution in children. Higher adherence to the Mediterranean diet at baseline was prospectively and inversely associated with changes in zBMI after 15 months of follow-up. Consuming vegetables, nuts, and yoghurt/cheese according to the recommendations reduces the likelihood of having a high increase in zBMI after 15 months of follow-up.

Maladaptive eating behaviors and health-related quality of life in Spanish children

In children, assessing health-related quality of life (HRQoL) and identifying the factors that can influence it are essential to understanding their overall health and well-being. Although eating disorders in children have been associated with reduced HRQoL, the impact of maladaptive eating behaviors, such as external eating, emotional eating and restrained eating, on children's HRQoL has not yet been prospectively explored. Therefore, the aim of this study was to determine whether external, emotional and restrained eating at baseline was associated with HRQoL in children after 14.65 months (95% CI: 14.57-14.73) of follow-up. The study involved 690 boys and 681 girls aged between 8 and 10 years, recruited from primary schools in Catalonia (Spain). To assess the relationship between external, emotional and restrained eating behaviors at baseline and HRQoL at follow-up, the Dutch Eating Behavior and KIDSCREEN-10 questionnaires were used, respectively. After adjusting for sex, age, intervention allocation group, school, maternal education, zBMI and physical activity, external and emotional eating behaviors at baseline were negatively associated with HRQoL at follow-up (p < 0.01). These associations were attenuated after final adjustment for HRQoL at baseline. Furthermore, a composite score of maladaptive eating behaviors at baseline was created by summing the individual scores for emotional, restrained and external eating behaviors. This composite score showed a significant inverse association with HRQoL at follow-up, even after adjusting for baseline HRQoL (p = 0.024). In conclusion, external and emotional eating behaviors seems to negatively affect HRQoL prospectively in Spanish children. The composite score of maladaptive eating behaviors showed a stronger inverse association with HRQoL than each eating behavior individually. TRIAL REGISTRATION NUMBER: ISRCTN registry: ISRCTN68403446; Date of registration, August 01, 2014 'Retrospectively registered'.

Development and Validation of a Questionnaire to Measure Adherence to a Mediterranean-Type Diet in Youth

Proper nutrition during childhood is crucial for preventing chronic diseases and ensuring optimal growth. This study aimed to develop and validate the Korean version of the KIDMED (K-KIDMED) questionnaire to accurately measure Mediterranean diet (MD) adherence among Korean children and adolescents. A total of 226 parents, representing their children and adolescents, completed the K-KIDMED, a 112-item food frequency questionnaire (FFQ), and a 24-h dietary recall method through an anonymous online survey. The K-KIDMED comprised 11 questions, with five excluded from the original scoring as they did not apply to the FFQ. Scores were categorized into three levels of adherence to the MD: low (1 or less), average (2-4), and good (5 or more). The agreement between total MD scores from the Korean version of the Mediterranean diet adherence screener and the FFQ was moderate (intraclass correlation coefficient = 0.455, 95% confidence interval: 0.346, 0.553). Among the 226 children and adolescents, 36.7% had low adherence to the KIDMED, 43.3% had intermediate adherence, and 19.9% had good adherence. Higher K-KIDMED scores were correlated with greater intakes of fiber, vitamin K, vitamin B6, and potassium (all p < 0.05). We developed the K-KIDMED as a valid tool to assess MD adherence in Korean children and adolescents.

The influence of physical activity, adherence to Mediterranean diet, and weight status on the psychological well-being of adolescents

The mental health of adolescents is a determining factor for their adequate development, but is influenced by factors such as physical activity, nutrition, gender, and weight status. However, previous research has not analysed differences in psychological status, mainly in basic psychological needs and life satisfaction, among male and female adolescents with different levels of physical activity, weight status and adherence to the Mediterranean diet (AMD). For this reason, the objectives of the present investigation were to establish whether the differences between active and inactive adolescents in basic psychological needs and life satisfaction depend on gender; and to determine the differences in basic psychological needs and life satisfaction of active and inactive adolescents with different weight status and AMD. A total of 791 adolescents aged between twelve and sixteen years old participated in the study. All the participants were measured for basic psychological needs, life satisfaction, and level of physical activity, AMD, and height and body mass. The results showed a higher score in basic psychological needs and life satisfaction for active adolescents in both the males' and females' groups. No differences were found in the psychological variables when comparing adolescents with different weight status. Adolescents with a higher AMD showed higher scores in satisfaction of basic psychological needs and satisfaction with life than adolescents with a worse AMD. Therefore, it can be concluded that the level of physical activity and AMD are factors to be considered for the mental health of adolescents, but the relevance of weight status will have to be confirmed in future research.

Clustering of Dietary Patterns Associated with Health-Related Quality of Life in Spanish Children and Adolescents

PURPOSE

The aim of the current study was to examine the association between dietary patterns and health-related quality of life (HRQoL) among Spanish children and adolescents.

METHODS

A modified version of the parental version of 10 items of the Screening for and Promotion of Health-Related Quality of Life in Children and Adolescents-a European Public Health perspective (KIDSCREEN-10) was used to assess children's HRQoL in three areas: subjective physical, mental, and social status. To evaluate dietary habits, a food frequency questionnaire was employed. To identify different feeding patterns in the sample of children and adolescents examined, cluster analyses were carried out. In addition, a generalized linear model with a Gaussian distribution was applied to test the associations between the determined clusters and HRQoL.

RESULTS

The lowest HRQoL was identified in participants located in the unhealthiest cluster (Cluster 1) (mean [M] = 85.2; 95% confidence interval [CI] 83.7 to 86.7). In comparison with the unhealthiest cluster (Cluster 1), a greater estimated marginal mean of HRQoL was identified for participants in the moderately healthy cluster (Cluster 1) (p = 0.020) and in the healthiest cluster (Cluster 2) (p = 0.044).

CONCLUSIONS

Based on our findings, dietary habits based on the low consumption of bread, cereals, and dairy products (mainly), together with low intake of fruits and vegetables, are related to lower HRQoL in children and adolescents. These results underscore the importance of promoting balanced and nutrient-rich diets among young populations. Public health initiatives should focus on educating parents, caregivers, and children about the benefits of a varied diet that includes adequate portions of fruits, vegetables, whole grains, and dairy products.

Exploring Determinants of Health-Related Quality of Life in Emerging Adults with Type 1 Diabetes Mellitus: A Cross-Sectional Analysis

(1) Background: Emerging adulthood, from the age of 18 to 29 years, is a crucial phase for individuals with Type 1 Diabetes Mellitus, as it affects their Health-Related Quality of Life. (2) Methods: This cross-sectional study analyzes the influence of the Mediterranean diet, Diabetes duration, Hemoglobin A1c, and sleep disorders on Health-Relate Quality of Life in Type 1 Diabetes Mellitus. In this study, conducted in Andalusia, Spain, 362 emerging adults with Type 1 Diabetes Mellitus completed the Oviedo Sleep Questionnaire, the Adaptation of Mediterranean Diet Adherence Screener, and the Vida con Diabetes Tipo 1 (ViDa1) Health-Related Quality of Life questionnaire between October 2021 and July 2022. Pearson correlation coefficients and a multiple regression analysis were conducted for each Health-Related Quality of Life in Type 1 Diabetes Mellitus dimension (Interference with Life, Well-being, Self-care, and Concern about the Condition) for overall sample and separately for males and females. (3) Results: Different and significant correlations are found among factors such as Age, Body Mass Index, Currently being a student, Hemoglobin A1c, Sleep satisfaction, Insomnia, Hypersomnolence, and Adherence to Mediterranean diet. Notably, Insomnia is a main predictor for Interference with Life, Well-being, and Concern about the Condition, especially for females. (4) Conclusions: Insomnia is the main predictor of Health-Related Quality of Life in Type 1 Diabetes Mellitus among Andalusian emerging adults with this condition. Consequently, a regular assessment of sleep and Health-Related Quality of Life from a gender perspective in this age group is crucial.

Predictive approach of health indicators from the physical activity habits of active youth

The aim of this study is to analyse the relationship between sport modalities practiced, physical fitness, body composition, and healthy habits in an active young population, using a statistical model for prediction. A total of 2255 (1528 boys and 727 girls) children and adolescents aged 6-17 years old who were involved in extracurricular sports from rural areas of Spain participated. Physical fitness was assessed through validated field test and, body composition was determinated using bioelectrical impedance analysis. Adherence to the Mediterranean diet was assessed by KIDMED questionnaire. The general sport variable was significant in VO2max when comparing the invasion and combat modalities to the reference level (court/net). The sex and age variables revealed significant differences in all physical fitness and body composition parameters. Health parameters, such as hours of additional practice, adherence to the Mediterranean diet, and previous experience, showed significant differences. The study concludes that the sport modality variables of training, sex, age, and maturational period have an impact on body composition and fitness parameters in this population. Therefore, by focusing on factors associated with lower values in health indicators, we can prevent health problems during adulthood, such as cardiorespiratory deficits.

Mediterranean Diet and Mental Health in Children and Adolescents: A Systematic Review

CONTEXT

Childhood and adolescence are periods of critical importance in the development of mental health disorders. The Mediterranean diet (MD) has been linked to multiple positive health outcomes, including reduced incidence of mental health disorders and fewer psychiatric symptoms.

OBJECTIVE

This study aimed to investigate the association between adherence to an MD and mental health outcomes in children and adolescents.

METHODS

A systematic literature review was conducted of original research that explored the relationship between psychiatric symptoms or disorders and adherence to an MD. The literature search was conducted on PubMed, Scopus, Web of Science, MEDES, Dialnet, and Latindex from inception to November 2022, and the Newcastle-Ottawa Scale was used to evaluate the quality of studies.

RESULTS

A total of 13 studies (6 cross-sectional, 4 case-control, 2 randomized clinical trials, and 1 longitudinal cohort) out of 450 met the inclusion criteria. A total of 3058 children or adolescents with a mean age range from 8.6 to 16.2 years were included. Among the reviewed studies, 5 (71.42%) of those looking at attention-deficit/hyperactivity disorder, 4 (80%) examining depression, and 2 (50%) assessing anxiety found a significant protective association. Seven articles (53.84%) were found to be of high quality and 6 (46.15%) of moderate quality.

CONCLUSION

Adherence to an MD could be a protective factor for mental health in child and adolescent populations. This suggests that promoting an MD could help prevent the onset of clinical psychiatric symptoms, reduce symptom severity, and improve prognosis in young patients.

SYSTEMATIC REVIEW REGISTRATION

PROSPERO registration no. CRD42021276316.

Healthy diets positively associated with health-related quality of life in children and adolescents from low socioeconomic areas: Findings from the Greek Food Aid Program, DIATROFI

OBJECTIVES

To assess the relationship of diet with health-related quality of life (HRQoL) in vulnerable children and adolescents.

METHODS

Data included 6583 children and adolescents (aged 3-18 years old) from the Greek Food-Aid DIATROFI Program in the 2015 to 2016 and 2017 to 2018 school years. HRQoL was measured with the Pediatric Quality of Life Inventory questionnaire and diet with food frequency questionnaires. The healthy plant-based diet index (hPDI), animal score, and dietary patterns were investigated.

RESULTS

The hPDI and animal score were associated with good HRQoL (odds ratio [OR] [95% confidence interval], 10-unit increase: ORhPDI = 1.28 [1.05, 1.57], ORanimal = 1.51 [1.14, 2.00]) and physical (ORanimal = 1.62 [1.23, 2.13]), emotional (ORhPDI = 1.30 [1.07, 1.58], ORanimal = 1.41 [1.08, 1.85]) and school function (ORhPDI = 1.32 [1.09, 1.59], ORanimal = 1.46 [1.12, 1.89]). Dietary patterns of fruits, raw vegetables, and cheese were associated with good HRQoL (OR of 1-unit increase: 1.22 [1.13, 1.32]), and physical OR = 1.18 [1.09, 1.27]) and emotional function (OR = 1.09 [1.02, 1.18]). Starchy foods and sweetened beverages were associated with poor HRQoL (OR = 0.75 [0.63, 0.90]), and emotional (OR = 0.80 [0.68, 0.95]) and school function (OR = 0.72 [0.61, 0.85]).

CONCLUSION

Healthy diets and dietary patterns were positively associated with the HRQoL of vulnerable children and adolescents, which may offer opportunities for prevention.

Adherence to the Mediterranean Diet in Children and Adolescents and Association with Multiple Outcomes: An Umbrella Review

The Mediterranean Diet (MD) has been linked to numerous health benefits. This umbrella review aims to synthesize evidence from systematic reviews on the MD's impact on children and adolescents aged 6 to 19 years. Following Joanna Briggs Institute guidelines, we included 11 systematic reviews focusing on the MD's effects on health outcomes, such as asthma, anthropometric measures, physical fitness, and inflammatory markers. The results indicate a protective role of the MD against childhood asthma due to its antioxidant-rich components. However, evidence for its impact on allergic conditions like rhinitis and eczema is inconclusive. Findings regarding anthropometric outcomes, particularly BMI, are limited and inconsistent. A positive correlation was observed between MD adherence and increased physical activity, improved physical fitness, quality of life, and reduced sedentary behavior. Additionally, the MD showed an inverse relationship with pro-inflammatory biomarkers, suggesting anti-inflammatory benefits. The inconsistency in BMI findings and the potential anti-inflammatory properties of the MD warrant further longitudinal research. Future studies should explore the MD's impact on cognitive functions, academic performance, and mental health in this age group, highlighting the significance of establishing healthy eating habits early in life.

Body image and dietary habits in adolescents: a systematic review

CONTEXT

Adolescence is a critical developmental stage in which increasing concerns about body image (BI) coincide with the consolidation of dietary habits (DHs). Multiple studies have sought robust associations between BI and DHs to prevent unhealthy behaviors.

OBJECTIVE

The aim of this systematic review was to examine the available literature on the association between BI perception (BIP) and/or satisfaction (BIS) and DHs in adolescents.

DATA SOURCES

A search was carried out of 5 electronic databases (PubMed, SciELO, Cochrane, Embase, and PsycInfo) using a combination of keywords (and synonyms) related to adolescence, BI, and diet.

DATA EXTRACTION

Data screening, extraction, and quality assessment were performed independently by 2 investigators using the PRISMA and AXIS guidelines.

DATA ANALYSIS

Of 2496 articles screened, 30 articles, published in English or Spanish, that evaluated the relationship between BI and DHs in adolescents aged between 10 years and 18 years, were included. A relationship between accurate BI perception in adolescents and healthy DHs was reported in 5 articles (16.2%). A relationship between overestimation of body weight in adolescents and healthy DHs was reported in 4 articles (13.3%). A relationship between underestimation of body weight and unhealthy DHs was reported in 8 articles (26.7%). In addition, 4 articles (13.3%) reported a relationship between BIS and healthy DHs. The desire to gain weight was associated with unhealthy DHs in 3 (10%) of the articles, while the desire to lose weight was related to healthy DHs in 3 (10%) of the articles and to unhealthy DHs in 3 (10%) other articles. There were also gender differences in the relationship between BIP or BIS and DHs.

CONCLUSION

Adolescents who underestimate their body weight tend to report less healthy DHs than body weight overestimators. Adolescents unsatisfied with their BI and with a drive for thinness frequently engage in DHs linked to losing weight.

SYSTEMATIC REVIEW REGISTRATION

PROSPERO registration no. CRD42020184625.

Mediterranean diet is associated with better gastrointestinal health and quality of life, and less nutrient deficiency in children/adolescents with disabilities

Background

Children and adolescents with disabilities face various nutritional problems. This study aimed to examine dietary characteristics, nutritional status and problems, gastrointestinal health, and quality of life in children and adolescents with disabilities.

Methods

This study included 5-18 years old children and adolescents (n = 1,991) with disabilities. We used the Mediterranean Diet Quality Index (KIDMED), the Gastrointestinal Symptom Rating Scale (GSRS), and the Pediatric Quality of Life Inventory (PedsQL) to assess diet characteristics, gastrointestinal problems, and life quality. We collected retrospective 24-h food record to assess energy and nutrient intakes.

Results

The rate of stunting in children with disabilities varies between 16.5% and 19.8%. When comparing disability types, more children with physical disabilities were underweight (8.8% vs. 6.7%) and stunted (19.8% vs. 16.5%), while more children with intellectual disabilities were tall (7.9% vs. 5.5%) and overweight/obese (21.1 vs. 17.2%; p < 0.05). Wasting (9.3%) and overweight/obesity (23.8%) were more common in children with disabilities aged 5-7 years (p < 0.001). Eating problems such as loss of appetite, food refusal, food neophobia, and food selectivity were more common in children aged 5-7 years, and problems with fast eating and overeating were more common in adolescents aged 13-18 years (p < 0.05). Among children and adolescents with disabilities, the nutrients with inadequate intakes were vitamin E, vitamin B1, folate, potassium, calcium, and iron, while the nutrients with intakes above the requirements were proteins, carbohydrates, vitamins A, B2, B6, B12, and C, phosphorus, zinc, and sodium. Participants with good Mediterranean diet quality had higher energy and nutrient intakes and higher percentages of meeting nutrient requirements (p < 0.05). KIDMED scores were negatively correlated with GSRS total (r = -0.14, p < 0.001) and subcomponent scores (abdominal pain, diarrhea, reflux, indigestion, and constipation; p < 0.05), and significantly and positively correlated with PedsQL total (r = 0.12, p < 0.001). A one-unit increase in the GSRS score resulted in a 14.4 times decrease in the PedsQL score, and a one-unit increase in the KIDMED score resulted in a 10.8 times increase in the PedsQL score (p = 0.001).

Conclusion

Overweight/obesity, stunting/wasting, nutritional problems, and deficiencies are common among disabled children and adolescents. Mediterranean diet is associated with a better quality of life, and gastrointestinal health in children with disabilities.

Adherence to the Mediterranean diet in young male soccer players

INTRODUCTION

Nutrition is vital in health and sports performance by improving anthropometric-related parameters and dietary habits, especially in the youngest ages. The Mediterranean diet (MD) has been highly recognized for its positive health effects and low adverse environmental impact.

OBJECTIVES

We aimed to characterize adherence to the MD and analyze its association with anthropometric parameters in young soccer players.

METHODOLOGY

In the present study, 132 male young soccer players from under 9 to under 15 categories (aged 7 to 15 years) from a Portuguese football club participated. The Mediterranean Diet Quality Index for Children and Adolescents (KIDMED) questionnaire was applied to assess adherence to the MD. Anthropometric-related parameters, including body mass, height, triceps skinfold thickness (TSKF), suprailiac skinfold thickness (SISKF), body mass index (BMI) and body fat percentage (%BF), were determined. The differences between groups were performed accordingly to normal and non-normal distribution. Spearman's correlations were performed to analyze the hypothetical correlation between KIDMED and BMI.

RESULTS

Players reached an average KIDMED score of 8.36 ± 1.92, showing that 68.2% (n = 90) reached high adherence to the MD, 31.1% (n = 41) had moderate adherence to the MD, and 0.78% (n = 1) had poor adherence to the MD. When the analysis was made for age group and BMI classification, no significant differences were observed in adherence to the MD. Considering the main characteristics of the MD, 50.8% consumed fruit (vs. 49,2%), 52.3% consumed vegetables (vs. 47,7%), and only 20% consumed oleaginous dried fruits (vs. 80%). Dairy consumption throughout the day was 49,2% (vs. no: 50,8%).

CONCLUSION

Data from the present study showed that many soccer players adhered to the MD, and no differences were observed for age group or BMI classification.

Low Sleep Hygiene Is Associated with Less Adherence to the Mediterranean Diet in Chilean Schoolchildren from Rural Public Schools-A Cross-Sectional Study

The Mediterranean diet stands as a widely acknowledged and health-promoting dietary pattern, renowned for its notable linkage to the mitigation of noncommunicable chronic maladies. Nonetheless, the existing body of evidence concerning the potential interrelation between sleep hygiene and this dietary regimen remains circumscribed. The main objective was to determine the association between sleep hygiene and adherence to the Mediterranean diet in Chilean schoolchildren from rural public schools in southern Chile. A non-experimental study was carried out, with an analytical, cross-sectional design. A total of 265 students (56.6% women, mean age 13.5 ± 1.8) from a rural community in southern Chile were recruited. Sleep habits were evaluated using Section 6 of the Life Habits and Adolescence Questionnaire, Sleep and Rest, and adherence to the Mediterranean diet was assessed with the KIDMED Mediterranean Diet Adherence Questionnaire. The main results indicated that 52.8% of schoolchildren need to improve adherence to the Mediterranean diet and 16.6% have a low-quality Mediterranean diet. A high percentage of schoolchildren have behaviors related to poor sleep hygiene (going to bed late (46%), waking up tired and wanting to continue sleeping (63.8%), and having problems falling asleep (42.6%)). Schoolchildren who got up after 8:30 a.m., those who fell asleep after midnight, upon conducting a comparative analysis of the students based on their sleep patterns, those who woke up tired and those who had trouble falling asleep had a lower level of adherence to the Mediterranean diet compared to schoolchildren who got up earlier than 8:30 a.m., fell asleep before midnight, did not wake up tired, and those who did not find it difficult to fall asleep, respectively. In conclusion, having poor sleep patterns including difficulties in both awakening and falling asleep are associated with less adherence to the Mediterranean diet in schoolchildren from rural public schools in southern Chile. Monitoring these variables and promoting healthy lifestyle habits within the educational community are essential measures.

Clustering of Mediterranean dietary patterns linked with health-related quality of life in adolescents: the EHDLA study

The aim of this cross-sectional study was to analyze the association between adherence to the Mediterranean diet (MedDiet) and its dietary components and health-related quality of life (HRQoL) in a sample of Spanish adolescents. A total sample of 634 adolescents was included (mean age: 13.96 ± 1.54 years; 56.9% girls). The Mediterranean Diet Quality Index in children and adolescents (KIDMED) and the KIDSCREEN-10 were used to assess adherence to the MedDiet and its components and HRQoL, respectively. Linear regression was applied to estimate the association between overall adherence to the MedDiet and HRQoL. Cluster analysis was used to establish subgroups according to different patterns of MedDiet component consumption. Higher overall adherence to the MedDiet was significantly associated with greater HRQoL (unstandardized beta coefficient [β] = 0.329; 95% CI: 0.108, 0.550; p = 0.004), even after adjustment for sociodemographic, physical and lifestyle covariates (β = 0.228; 95% CI: 0.007, 0.449; p = 0.043). When different clusters were established according to similar features of MedDiet component consumption, the cluster with a higher percentage of individuals who skipped breakfast had significantly lower scores on the HRQoL scale (p < 0.05)  Conclusions: Our findings highlight the relevance of considering the specific patterns of food group consumption and MedDiet-related behaviors and not just the overall measure of MedDiet adherence for promoting HRQoL in adolescents. What is Known: • Previous studies have shown that some lifestyle behaviors, such as dietary habits, could be associated with health-related quality of life. • According to our results, higher adherence to the Mediterranean diet pattern was associated with greater health-related quality of life in adolescents. What is New: • Skipping breakfast seems to have a crucial role in health-related quality of life among adolescents. • These results could lead to the development of more specific dietary strategies for increasing health-related quality of life in adolescents.

The Role of Basic Psychological Needs in the Adoption of Healthy Habits by Adolescents

Previous research in this field has not examined the significance of each of the basic psychological needs (BPNs) on changes in the physical activity level, adherence to the Mediterranean diet (AMD), kinanthropometric and derived variables, and the physical fitness of adolescents. Therefore, the purpose of this study was (a) to examine the variances in physical activity, AMD, and kinanthropometric and derived variables, as well as fitness levels, among adolescents with varying degrees of satisfaction regarding each of the BPNs and (b) to assess the differences in the study variables among adolescents based on whether the BPNs are satisfied individually or jointly. The sample consisted of 791 adolescents (404 males and 387 females; average age: 14.39 ± 1.26 years old). The findings indicated that adolescents in the highest percentiles (75-100) of competence, autonomy, or relatedness showed higher scores in physical activity and AMD and better kinanthropometric and physical fitness variables than adolescents in the lowest percentiles (0-25). Adolescents who showed joint satisfaction of all BPNs showed the best results on all variables analyzed. In addition, it should be noted that competence played the most relevant role.

Mediterranean Diet-Based Interventions to Improve Anthropometric and Obesity Indicators in Children and Adolescents: A Systematic Review with Meta-Analysis of Randomized Controlled Trials

To our knowledge, no systematic review with meta-analysis has separately synthesized the effects of Mediterranean diet-based interventions in children and adolescents in relation to the effects on anthropometric measures. A better understanding of the effects of Mediterranean diet-based interventions on anthropometric variables could facilitate their implementation in efforts to prevent obesity in the young population. The aim of the present meta-analysis was to evaluate the effects of Mediterranean diet-based interventions on anthropometric and obesity indicators among children and adolescents. Four databases were systematically searched (PubMed, Scopus, Web of Science, and Cochrane Database of Systematic Reviews), including all studies up until 15 March, 2023. Eligible articles were randomized controlled trials measuring the effect of an intervention based on the promotion of the Mediterranean diet and obesity-associated parameters. The effect size of each study was estimated by Cohen's d for continuous variables or risk difference for categorical variables. Compared to the control group, the Mediterranean diet-based interventions showed small and significant reductions in body mass index (d = -0.14; 95% CI: -0.26, -0.01; I2 = 77.52%). Participants in the Mediterranean diet-based interventions had a significant reduction in the percentage of obesity (risk difference = 0.12; 95% CI: 0.01, 0.23; I2 = 84.56%) in comparison with the control group. Interventions had greater effects when aiming at participants with excess weight (that is, overweight or obesity), both for body mass index, waist circumference, waist-to-height ratio, percentage of obesity, and percentage of abdominal obesity. Mediterranean diet-based interventions have a significant effect on reducing the body mass index as well as reducing obesity in children and adolescents (aged 3-18 y). This trial was registered at PROSPERO as CRD42023386789.

Health-Related Quality of Life in Childhood and Adolescence: The Interrelation with Level of Adherence to Mediterranean Diet and Dietary Trajectories: Highlights from the DIATROFI Program (2021-2022)

Children's dietary habits can have a key role in contributing to an improvement in their Health-Related Quality of Life (HRQoL). This study aims to assess the connection between Mediterranean diet adherence and HRQoL in a sample of Greek students, utilizing data from the DIATROFI program. The parents of 3774 students (mean age 7.8 (2.6) years) reported their children's HRQoL and level of adherence to the Mediterranean dietary pattern at the beginning and end of the 2021-2022 school year. At baseline, most students' adherence was characterized as moderate (55.2%) or high (25.1%). Students with moderate or high adherence tο the Mediterranean diet were less likely to report a total HRQoL below the median at baseline (OR = 0.56, 95%CI = 0.44, 0.70), along with all its dimensions (physical, emotional, social, and school functions). A one-unit improvement in KIDMED score _{(beginning-end of schoolyear)} was associated with the likelihood of an improvement in total HRQoL _{(beginning-end of schoolyear)} (OR = 1.09, 95%CI = 1.02, 1.17), emotional (OR = 1.09, 95%CI = 1.02, 1.17), and social functions (OR = 1.13, 95%CI = 1.05, 1.22), but not with physical and school functions. The health benefits of the Mediterranean diet in children may not be limited to disease prevention but also extend to their overall wellbeing.

The Role of Diet in Children with Psoriasis: Emerging Evidence and Current Issues

Psoriasis is an immune-mediated inflammatory systemic disease with skin tropism and chronic relapsing course; it is associated with an increased cardiovascular risk and with many metabolic comorbidities, emerging during childhood in 22–33% of cases. Diet influences the presentation and the clinical course of inflammatory diseases, including psoriasis; in particular, it was shown that a Mediterranean, gluten-free, or low-calorie diet may positively affect disease control in adult patients with psoriasis and adequate pharmacological therapy. These three dietary regimens may play a role also in children with psoriasis. It has been demonstrated that pediatric psoriasis is associated with psychological stress, celiac disease, and obesity, which may be positively influenced by these dietary regimens, respectively. Therefore, the expertise of multiple health figures (gastroenterologists, nutritionists, pediatricians, dermatologists) is required to plan a tailor-made dietary strategy, ensuring good growth, through an adequate intake of essential micro- and macronutrients and, at the same time, impacting the pro-inflammatory biochemical profile and on the associated cardiovascular risk of psoriasis disease.

Elementary School-Aged Children's and Parents' Report of Health-Related Quality of Life and Relationships with Lifestyle Measures: A Cross-Sectional Study

Supporting a child's health-promoting lifestyle is an investment in their future health and health-related quality of life (HRQoL). Particularly children with overweight and obesity may be at an increased risk of a poor HRQoL. Currently, a comprehensive evaluation of lifestyle factors and age in relation to HRQoL in healthy children and, further, separate child and parental proxy-reports of HRQoL are lacking. The aims of this cross-sectional study in Finland are to compare healthy elementary school-aged children's and parents' reports of the child's HRQoL, and to view them in relation to lifestyle markers. The HRQoL was measured with Pediatric Quality of Life Inventory^TM 4.0, and the following lifestyle markers: leisure-time physical activity as MET, diet quality via a validated index (ES-CIDQ), sleeping time and screen time by questionnaires. Furthermore, age and BMI were recorded. Data were obtained from 270 primary school-aged children (6-13 years). Female gender, the child's older age (8-13 years), high physical activity level and less screen time were strong predictors of a higher HRQoL in both the child's and parental proxy-reports. Means to promote healthy lifestyles should be particularly targeted to young children, especially boys, and new ways to promote physical activity and other forms of free-time activities should be sought.

Adherence to the Mediterranean Diet and Health-Related Quality of Life during the COVID-19 Lockdown: A Cross-Sectional Study including Preschoolers, Children, and Adolescents from Brazil and Spain

Scientific literature has suggested positive associations between the Mediterranean diet (MD) and the health-related quality of life (HRQoL) in young populations. However, to our knowledge, this relationship is unexplored during a situation of social isolation (i.e., lockdown). The objective of the current study is to examine the relationship between the MD and HRQoL during the COVID-19 lockdown among preschoolers, children, and adolescents from Brazil and Spain. This cross-sectional study includes a sample of 1099 three- to seventeen-year-old participants (47.6% girls) who were recruited via social networks. The HRQoL was assessed with the EQ-5D-Y. The Quality Index for Children and Teenagers (KIDMED) questionnaire was applied to evaluate the relationship between the MD and HRQoL. The highest prevalence of reported problems was found for worried, sad, or unhappy participants (39.8%). Furthermore, the lowest proportion of HRQoL problems was observed for "mobility" (2.5%). The proportion of high adherence to the MD was 44.3%. Participants with greater MD adherence reported higher HRQoL mean scores when compared with those who did not adhere to the MD (83.7 ± 0.6 vs. 85.6 ± 0.7, respectively; p < 0.05). Adherence to the MD and especially daily fruit intake were related to higher HRQoL during the COVID-19 lockdown among Brazilian and Spanish young people aged three to seventeen years.

Is there any association between dietary inflammatory index and quality of life? A systematic review

Background

The inflammatory potential of unhealthy diets can lead to the development of chronic diseases and also exacerbating their complications. Therefore, the present systematic review aimed to evaluate the association of dietary inflammatory index (DII) and quality of life (QOL) in human subjects.

Methods

A systematic search was conducted in PubMed, Web of Science, and Scopus databases, using the combination of all search terms related to DII and QOL until May 2022. All eligible human studies published in English were included.

Results

Three hundred twenty-seven studies were obtained from the first systematic search of the databases although, only eight studies were eligible for the evaluation. Seven studies reported that there was a significant reverse association between DII scores and overall QOL and/or its subscales in different populations including patients with asthma, osteoarthritis, hemodialysis patients, multiple sclerosis, obese women, and also in healthy subjects. While, one study on postmenopausal women found no evidence of this association.

Conclusion

This systematic review demonstrated that an anti-inflammatory diet might be associated with better QOL. However, future well-designed clinical trials can provide better conclusions especially regarding the quantifying of this relationship.

Prospective Association between Adherence to the Mediterranean Diet and Health-Related Quality of Life in Spanish Children

Health-Related Quality of Life (HRQoL) is gaining attention in children and adolescents because it is an important outcome of their health status and well-being. Therefore, it is important to identify determinants for HRQoL. Currently, there is scarce and mainly cross-sectional evidence on the relationship between adherence to the Mediterranean diet and HRQoL in children and adolescents. Therefore, the objective of the present study was to assess the prospective association between adherence to the Mediterranean diet and HRQoL in Spanish children. The study was carried out in 1371 children aged 8 to 10 from different Catalan elementary schools with a medium follow-up of 15 months. The KidMed and KIDSCREEN-10 questionnaires were used to assess the relationship between diet and HRQoL, respectively. The KidMed score at baseline was positively associated with HRQoL (β = 0.320; 95% CI 0.101−0.540) after adjusting for confounders. Additionally, the logistic regression analysis showed positive associations between baseline consumption of fruit, vegetables, pulses, and high adherence to the Mediterranean diet and HRQoL at follow-up (p < 0.05 for all) while the consumption of fast-food, pasta or rice, baked good or pastries, and sweets were negatively correlated (p < 0.05 for all) with HRQoL at follow-up. In conclusion, adherence of the Mediterranean diet was predictive for HRQoL in Spanish children, but further prospective studies are needed to confirm this result.

Is adherence to the 24-Hour Movement Guidelines associated with Mediterranean dietary patterns in adolescents?

BACKGROUND

Multiple health-risk behaviours such as physical inactivity, excessive recreational screen time, and insufficient sleep have been independently and positively associated with poor adherence to the Mediterranean diet in adolescents. However, little is known about the combined association between 24-Hour Movement Guidelines (i.e., physical activity, screen time, and sleep duration) and adherence to the Mediterranean diet.

OBJECTIVE

The aim of the present study was to examine whether adolescents who meet all three 24-Hour Movement Guidelines report greater adherence to the Mediterranean diet, and the different foods that comprise it, compared to those who do not meet the three recommendations.

METHODS

In this cross-sectional study, 1391 Spanish adolescents (13.08 ± 0.85, 44.82% girls), aged 11-16 years, completed self-reported questionnaires on physical activity, recreational screen time, sleep duration and adherence to the Mediterranean diet. A binary logistic regression analysis was used to predict the likelihood of having an optimal adherence to the Mediterranean diet, as well as different food items, according to the meeting of the three 24-Hour Movement Guidelines. Covariates included were age, sex, socioeconomic status, and body mass index (z-score).

RESULTS

Adolescents who met all three 24-Hour Movement Guidelines obtained higher adherence to the Mediterranean diet than those who did not meet with the three recommendations (β = 1.33, 95% confidence interval [CI]: 0.81, 1.85, p < 0.001). In addition, those who met all three 24-Hour Movement Guidelines were more likely to consume a fruit and vegetables once a day, consume fish regularly, and eat cereal or grains for breakfast (all, p < 0.05), and less likely to consume commercially baked goods or pastries for breakfast and to eat sweets and candies several times a day (all, p < 0.001), compared to those who did not comply with the three 24-Hour Movement Guidelines.

CONCLUSION

Since meeting the three 24-Hour Movement Guidelines seems to be associated with Mediterranean diet eating patterns in adolescents, it seems necessary to promote these movement behaviours from the early stages of life.

Good Adherence to the Mediterranean Diet Lowered Risk of Renal Glomerular Impairment in Children: A Longitudinal Study

Healthy diet patterns have a positive effect on chronic non-communicable diseases in the pediatric population, but the evidence is limited on the association between kidney impairment and adherence to a Mediterranean diet. We aim to determine the associations between Mediterranean diet adherence and longitudinal tubular and glomerular impairment in children. Based on four waves of urine assays conducted from October 2018 to November 2019, we assayed urinary β₂-microglobulin (β₂-MG) and microalbumin (MA) excretion to determine transient renal tubular and glomerular impairment during the follow-up of the child cohort (PROC) study in Beijing, China. We assessed Mediterranean diet adherence using the 16-item Mediterranean Diet Quality Index in children and adolescents (KIDMED) among 1914 primary school children. Poor, intermediate, and good adherence rates for the Mediterranean diet were 9.0% (KIDMED index 0–3), 54.4% (KIDMED index 4–7) and 36.5% (KIDMED index 8–12), respectively. A short sleep duration was more prevalent in children with lower Mediterranean diet adherence, with no significant differences presenting in the other demographic and lifestyle covariates. The results of linear mixed-effects models showed that a higher urinary MA excretion was inversely associated with a higher KIDMED score (β = −0.216, 95%CI: −0.358, −0.074, p = 0.003), after adjusting for sex, age, BMI z-score, SBP z-score, screen time, sleep duration and physical activity. Furthermore, in generalized linear mixed-effects models, consistent results found that transient renal glomerular impairment was less likely to develop in children with intermediate Mediterranean diet adherence (aOR = 0.68, 95%CI: 0.47, 0.99, p = 0.044) and in children with good Mediterranean diet adherence (aOR = 0.60, 95%CI: 0.40, 0.90, p = 0.014), taking poor Mediterranean diet adherence as a reference. We visualized the longitudinal associations between each item of the KIDMED test and kidney impairment via a forest plot and identified the main protective eating behaviors. Children who adhere well to the Mediterranean diet have a lower risk of transient glomerular impairment, underscoring the necessity of the early childhood development of healthy eating patterns to protect kidney health.