Effects of front-of-package caffeine and sweetener disclaimers in Mexico: cross-sectional results from the 2020 International Food Policy Study.

OBJECTIVE: Front-of-package warning labels introduced in Mexico in 2020 included disclaimers that caution against allowing children to consume products with non-sugary sweeteners and caffeine. We examined the awareness and use of the disclaimers among Mexican adults and youth 1 month after the regulation was implemented. We also investigated their impact on the perceived healthfulness of industrialised beverages designed for children. DESIGN: Data on the awareness and use of the disclaimers were analysed. Two between-subjects experiments examined the effect of a sweetener disclaimer (Experiment 1, youth and adults) or a caffeine disclaimer (Experiment 2, only adults) on the perceived healthfulness of industrialised beverages. Interactions between experimental conditions and demographic characteristics were tested. SETTING: Online survey in 2020. PARTICIPANTS: Mexican adults (≥18 years, n 2108) and youth (10-17 years, n 1790). RESULTS: Most participants (>80 %) had seen the disclaimers at least rarely, and over 60 % used them sometimes or frequently. The sweetener disclaimer led to a lower perceived healthfulness of a fruit drink (adults: 2·74 ± 1·44; youth: 2·04 ± 0·96) compared with the no-disclaimer condition (adults: 3·17 ± 1·54; youth: 2·32 ± 0·96) (t's: >4·0, P values: <0·001). This effect was larger among older adults and male youth. The caffeine disclaimer did not affect adult's perceived healthfulness of a caffeinated drink (t = 0·861, P value = 0·3894). CONCLUSIONS: There were high awareness and use of the sweeteners and caffeine disclaimers shortly after the warning labels were implemented. The sweetener disclaimer appears to be helping consumers modify their perceptions regarding industrialised beverages for children. Findings may help decision-makers improve the regulation and better target communication strategies.

Examining the validity and consistency of the Adult Eating Behaviour Questionnaire-Español (AEBQ-Esp) and its relationship to BMI in a Mexican population.

PURPOSE: Appetitive traits in adults and their associations with weight can be measured using the Adult Eating Behaviour Questionnaire (AEBQ). The aim of this study was to confirm the factor structure of the Spanish AEBQ (AEBQ-Esp) in a Mexican sample and explore associations between the eight traits with body mass index (BMI). METHOD: A sample of 1023 adults, mean age of 36.8 ± 12.8 years, was recruited from Guadalajara, Mexico. Researchers weighed and measured participants, and they completed the AEBQ-Esp either online or in paper format and reported sociodemographic data. To test two alternative factor structures (eight factors including Hunger; seven factors excluding Hunger), confirmatory factor analysis (CFA) was used. Internal reliability was assessed using Cronbach's alpha; test-retest reliability was assessed using intra-class correlation coefficients. Multivariate linear regressions were used to test for associations between the AEBQ subscales and BMI, adjusted for age, sex, format of AEBQ responses, education, marital and employment status. RESULTS: A seven-factor structure was the best model fit using CFA, excluding the Hunger subscale but similar to the original AEBQ. Internal reliability was good for all subscales (Cronbach's α = 0.70-0.86), and the intra-class correlation coefficient (0.70-0.91) reflected good test-retest reliability. In the fully adjusted models, Satiety Responsiveness [ß = - 0.61; (- 1.01, - 0.21)] and Slowness in Eating [ß = - 0.70; (- 1.01, - 0.39)] were negatively associated with BMI, and Emotional Over-Eating [ß = 0.94; (0.62, 1.27)] was positively associated with BMI. CONCLUSIONS: The AEBQ-Esp (excluding Hunger) appears to be a valid and reliable psychometric questionnaire for measuring appetitive traits in a Mexican Spanish-speaking population. Some traits appear to be associated with BMI in adulthood and warrant further exploration. LEVEL OF EVIDENCE: Level III evidence obtained from well-designed cohort or case-control analytic studies. Although this was just an observational study, it was well designed and provided new evidence.

Participatory intervention to improve nutrition and physical activity of school-age children in Mexico.

Obesity is one of the major public health problems of the 21st century, affecting every country in the world. In Mexico, the prevalence of overweight and obesity in children (5 to 11 years) was 35.5%. Childhood obesity is a chronic disease itself; and is associated with other chronic conditions. OBJECTIVE: To assess the effect and feasibility of a participatory intervention to improve nutrition and physical activity within the school environment in children in public elementary schools in Mexico. METHODS: The present study is a cluster trial. The intervention focused on; changes in food offered, training the schools' food service staff, promoting water consumption and physical activity at the community level, implementing healthy spaces inside the school, improving the quality of physical education within schools, among others. The main outcomes will focus on rate of weight gain, time devoted to physical activity, sedentary behaviors, diet quality and response feeding behaviors. We also will assess the time and personnel involved in the intervention development, maintenance, and dissemination. CONCLUSION: Findings from this trial will generate new translational knowledge in Mexico; if the results are positive, this participatory intervention could serve as a basis for designing multidimensional interventions that could be scaled up at the national level.