Systematic Review of Reflection Spectroscopy-Based Skin Carotenoid Assessment in Children

Skin Carotenoids are Related to Cognitive Abilities among Toddlers

BACKGROUND

Carotenoids are antioxidant pigments that deposit in human tissues (e.g., skin, macula, and brain) upon dietary consumption. The health implications of skin carotenoids, which reflect overall dietary carotenoid consumption, have not been adequately studied in younger populations.

OBJECTIVE

This work aimed to examine links between skin carotenoids and cognitive, language, and motor skills among toddlers. A secondary aim explored relationships between skin carotenoids and neurophysiological outcomes of sensory memory (i.e., mismatch negativity [MMN]) and the functional integrity of the visual pathway (i.e., visual evoked potentials [VEPs]).

METHODS

Toddlers 12-18 months (n = 45) participated in a cross-sectional study. Skin carotenoids were measured with reflection spectroscopy via the Veggie MeterTM. Cognitive, language, and motor skills were measured using the Bayley Scale of Infant and Toddler Development IV Screening Test (BSID-IV). MMN and VEPs were collected with an auditory oddball task and a pattern reversal task, respectively, using electroencephalography. Analyses adjusted for age, household income, highest level of parental education, and total carotenoid intake (mg/1000kCal).

RESULTS

Regression modelling revealed that skin carotenoids significantly related to cognition (R2 = 0.57, p = 0.04) and not to any other BSID-IV subsets. Neither MMN nor VEP outcomes significantly related to skin carotenoids.

CONCLUSIONS

Greater skin carotenoids were selectively related to cognition, indicating that carotenoids may play a role in cognition in toddlers. Additional research is needed to understand links between skin carotenoids and specific domains of cognitive function and brain health in early life.

CLINICAL TRIAL REGISTRY

N/A.

Parent-child skin carotenoid level and vegetable intake relationships in users of children's cafeterias in Japan

Introduction

Studies on the relationship between parental and child dietary intakes are limited in Asian populations. Here, we examined parent-child relationships in skin carotenoid levels and vegetable intake in a Japanese community.

Methods

The study participants were 58 children aged 6-15 years and 39 of their guardians (parents) using children's cafeterias. Skin carotenoid levels were measured using the Veggie Meter®, and the number of vegetable dishes (equivalent to a serving of 70 g) was evaluated using a self-administered questionnaire.

Results

The mean (standard deviation; SD) skin carotenoid levels were 366.8 (74.0) in children and 315.0 (101.4) in parents. The partial correlation coefficient between parents' and children's skin carotenoid levels, adjusting for cafeteria, sex, parental dietary supplement use, and household financial status, was 0.38 (P = 0.02); after adjustment for smoking status and BMI, the positive correlation was attenuated (r = 0.25, P = 0.14). A positive correlation was observed between parents' and children's vegetable dish intake (r = 0.30, P = 0.02).

Conclusion

This cross-sectional study identified a positive correlation between parent-child intake of vegetable dishes, accounting for potential confounders. However, the positive correlation observed between parent-child skin carotenoid levels may have been attenuated by internal factors such as smoking and obesity.

Creating Healthy Environments for Schools: A Comprehensive Approach to Improving Nutrition in Arkansas Public Schools

BACKGROUND

Nutrition plays a vital role in children's physical and emotional health. More than half of school age children's calories are provided in the school food environment, making school interventions an opportunity to address child nutrition.

METHODS

The Creating Health Environments for Schools (CHEFS) program is designed to leverage local resources to create customized solutions that improve the nutritional content of school food and encourage children to choose healthier food. There are 8 components: (1) customizing nutrition plans, (2) modifying/replacing menu items, (3) helping procure healthier food, (4) providing equipment grants, (5) training cafeteria staff, (6) implementing environmental changes and nudges, (7) engaging students and parents, and (8) supporting sustainability. Supporting child nutrition directors is key to facilitating cooperation with schools.

IMPLICATIONS FOR SCHOOL HEALTH POLICY, PRACTICE, AND EQUITY

Menu modifications and procurement are interrelated and depend on successfully collaborating with corporate, independent, and local food services organizations. Limited school budgets require low or no-cost solutions and staff training. Student and parent engagement are critical to facilitate culturally-appropriate solutions that increase awareness of healthy food.

CONCLUSIONS

Every school district has particular resources and constraints. CHEFs engaged stakeholders to design customized solutions and encourage healthier nutrition for school children.

Association between atherosclerotic cardiovascular disease score and skin carotenoid levels estimated via refraction spectroscopy in the Japanese population: a cross-sectional study

Carotenoids play a role in preventing and impeding the progression of atherosclerotic cardiovascular diseases (ASCVDs) through their anti-oxidative effects. This study evaluated associations between ASCVD risk and skin carotenoid (SC) levels, reflecting dietary carotenoid intake. Participants' ASCVD risk was assessed using the Hisayama ASCVD risk prediction model, and SC levels were measured through a reflection spectroscope (Veggie Meter). The associations between high ASCVD risk and SC levels were analyzed using logistic regression analysis and a restricted cubic spline (RCS) model. A total of 1130 men and women (mean age: 56 years) from participants who underwent a health examination in Seirei Center for Health Promotion and Prevention Medicine in 2019 and 2022 were analyzed. Of these, 4.6% had moderate or high ASCVD risk. Mean SC values were 236, 315, 376, 447, and 606 in quintile Q1 to Q5, respectively. The adjusted odds ratios (95% confidence intervals) of SC quintile for moderate- or high-risk ASCVD was 0.24 (0.12-0.51) in Q5 (495 ≤), 0.42 (0.23-0.77) in Q4, 0.50 (0.29-0.88) in Q3, and 0.68 (0.41-1.12) in Q2 compared to Q1 (< 281). High SC values continuously showed non-linear inverse association with moderate- or high-risk for ASCVD in Japanese adults. Non-invasive SC measurements may be a good indicator for recommending carotenoids to prevent cardiovascular disease.

Evidence for Criterion-Related Validity of Pressure-Mediated Reflection Spectroscopy for Approximating Fruit and Vegetable Consumption among Preschool Children

BACKGROUND

Skin carotenoids are a valid biomarker for approximating fruit and vegetable consumption (FVC). Veggie Meter® (VM®, Longevity Link Corp.) is a pressure-mediated reflection spectroscopy (RS)-based device that allows for noninvasive and rapid assessment of skin-carotenoid score (SCS) in adults and children. Although VM® is established as a valid tool to measure FVC in adults, there is limited research supporting the validity evidence of the VM® to approximate FVC among preschool children.

OBJECTIVE

The current study aims to assess evidence supporting the criterion-related validity of RS-based SCS for approximating FVC among preschool children (3-5-y old).

METHODS

We collected cross-sectional data from typically developing preschool children (n = 136) attending the Child and Adult Care Food Program-participating family child care home settings (FCCHs) (n = 46) in Nebraska. Research team members collected children's height and weight to calculate body mass index; and measured children's SCS using the VM®. Children's FVC in FCCHs were collected using dietary observation. In addition, parents (n = 89) completed a shortened food frequency questionnaire to report children's FVC at home. Kendall's Tau (τ) correlation tests were conducted to measure the association between children's SCS with FVC in FCCHs and with parent-reported total fruit and vegetable (FV) frequency scores.

RESULTS

Children's SCS were significantly correlated with their mean FVC in FCCHs, τ = 0.14 (P = 0.02), total provitamin A carotenoids intake in FCCHs, τ = 0.19 (P < 0.001), and with parent-reported total FV frequency score, τ = 0.16 (P = 0.04).

CONCLUSION

The correlation coefficients in this study are comparable with results from a meta-analysis examining associations between FVC and SCS in 7-10-y-old children (r = 0.20). Thus, evidence suggests that RS offers a potentially valid, objective, and feasible method to assess preschool children's total FVC in multiple settings, especially in conjunction with other dietary assessment tools.