Are we really "eating well with Canada's food guide"?

Associations of the MIND Diet with Cardiometabolic Diseases and Their Risk Factors: A Systematic Review

Purpose

Recent studies have expanded the scope of research on the Mediterranean-DASH Intervention for Neurodegenerative Delay (MIND) diet beyond its impact on cognitive performance. These investigations have specifically explored its potential to provide protection against cardiometabolic diseases and associated risk factors, including obesity and dyslipidemia.

Methods

We systematically summarized and evaluated all existing observational and trial evidence for the MIND diet in relation to cardiometabolic diseases and their risk factors in adults. PubMed, Embase, CINAHL and Cochrane Library databases were systematically searched to extract original studies on humans published until September 2023, without date restrictions. A total of 491 studies were initially retrieved, out of which 23 met the eligibility criteria and were included in the final review. Duplicated and irrelevant studies were screened out by five independent reviewers using the Rayyan platform. Quality assessment was ascertained using the Newcastle-Ottawa scale for observational studies and the Cochrane risk-of-bias tool (RoB 2) for randomized trials.

Results

Across the different study designs, the MIND diet was generally associated with an improvement in anthropometric measures and other cardiometabolic outcomes, such as blood pressure, glycemic control, lipid profile, inflammation and stroke. The effects of the MIND eating pattern on some cardiovascular diseases are less conclusive.

Conclusion

The findings of this systematic review support the recommendation of the MIND diet as a strategy to reduce cardiometabolic risk in adults. Further well-designed and long-term studies are warranted.

Canadian Registered Dietitians' Utilization of the 2018 Diabetes Canada Nutrition Therapy Clinical Practice Guidelines: A Cross-sectional Study

OBJECTIVES

Our aim in this work was to ascertain Canadian registered dietitians' (RDs) use of the 2018 Diabetes Canada nutrition therapy (NT) recommendations and to identify the degree of agreement with facilitator-to-use statements.

METHODS

A national 28-item anonymous cross-sectional survey of RDs who counsel people with diabetes was conducted.

RESULTS

Three hundred sixty RDs responded to the survey, but some questions had fewer responses. Mean age of respondents was 36.8±10.1 years and 51.3% were certified diabetes educators (CDEs). Energy/macronutrient recommendations used most were regular timing/spacing of meals (85%), 30 to 50 g/day dietary fibre intake (71%), and maintaining a low glycemic index (65%). Mediterranean and Dietary Approaches to Stop Hypertension (DASH) dietary patterns had similar utilization rates as macronutrient distribution ranges, at 50% to 60%. Specific food recommendations were used most often, with the emphasis on fruits/vegetables and whole grains at 92% and 86%, respectively. Of the special considerations for people on insulin, regular meals/meal spacing was the recommendation used most often (88%). The statements "I trust the content …" and "I understand the scientific basis …" of the NT chapter were the internal facilitators most agreed with, at 86% each. The least agreed upon external facilitators were "my workplace encourages me to use the NT chapter," at 54%, and "I learned about the NT chapter in my formal education," at 44%. CDEs had significantly higher agreement on 12 of the 21 facilitator statements compared with non-CDEs.

CONCLUSIONS

Canadian RDs are utilizing the NT guidelines, including the new dietary patterns. Simple, easy-to-implement recommendations, such as specific foods and timing/spacing of meals, were used most frequently. Opportunities for increased use could include encouraging dietetic training programs and worksites to promote utilization of CPGs in practice.

Awareness of Canada's Food Guide Among Canadian Youth

Purpose: Canada's Food Guide (CFG) contains recommendations for healthy eating for Canadians. The objective was to examine the awareness of and learning about CFG by Canadian youth.Methods: Cross-sectional online surveys were conducted with 3,674 youth aged 10-17 years in Canada in November/December 2019. Logistic binary regression models examined awareness of CFG, learning about CFG in school, and learning about healthy eating in schools in the past 12 months.Results: Most participants reported hearing of CFG (84.5%), learning about CFG in school (86.6%), and learning about healthy eating in school (65.4%) in the past 12 months. Awareness of CFG was higher among females (OR: 1.61; 95% CI: 1.32-1.96), older youth (1.70; 1.39-2.07), and those in Atlantic Canada (OR: 1.77; 95% CI: 1.10, 2.84). Significantly fewer East/Southeast Asian, South Asian, Latino, and Middle Eastern participants reported hearing of CFG compared to white participants (p < 0.05 for all). Unstated/missing BMI (0.56; 0.45-0.71) and living in BC (OR: 0.61; 95% CI: 0.45, 0.82) were negatively associated with hearing about CFG. Similar results were observed in the models on learning about CFG and healthy eating in school.Conclusions: This study indicates discrepancies in awareness of CFG among youth by sex, ethnicity, region, and BMI which may suggest differences in use of CFG and healthy eating behaviours.

Comparing the perceptions and opinions of the 2007 and 2019 Canada's food guides among parents of young children

Background

The Canada's Food Guide (CFG) is recognized as the most prominent authoritative guideline for healthy eating in Canada. In 2019, Health Canada released the latest iteration of the CFG with substantial changes to its messaging and format from the previous 2007 CFG.

Objective

This study compared the awareness, use, knowledge, and opinions of the 2007 and 2019 CFGs among parents with children aged 18 months to 5 years who are participants in a family-based intervention trial, the Guelph Family Health Study.

Methods

The sample consisted of 327 parents (59% women) who responded to questions about the 2007 CFG and 177 parents (60% women) who responded to questions about the 2019 CFG. Parents' awareness and knowledge of the 2007 and 2019 CFGs were compared using Pearson's Chi-Square, while parents' opinions of the two CFGs were compared using Wilcoxon Rank-Sum tests. To describe and provide context about how parents used the 2007 and 2019 CFG descriptive analysis was used. To analyze the open-answer comments parents provided for the 2007 and 2019 CFGs thematic coding was used.

Results

Awareness of the 2007 and 2019 CFGs was high with 94.5 and 90.4% of parents reported having heard about the 2007 and 2019 CFGs, respectively. Knowledge of the plate proportion recommendations in the 2019 CFG was significantly higher than knowledge of the recommended number of servings in the 2007 CFG with 93.4% of parents identifying the Vegetable and Fruit Plate Proportions in the 2019 CFG. Parents identified that the 2019 CFG was a helpful and trustworthy resource, and that it was easier to follow and understand, and more representative of their culture and traditional foods than the 2007 CFG.

Conclusion

Our results suggest that parents' knowledge of the 2019 CFG recommendations was higher than for the 2007 CFG recommendations. Parents also had more positive opinions about the 2019 CFG as compared to the 2007 CFG. Future research is needed to explore whether these higher levels knowledge of the 2019 CFG recommendation translate to healthier eating patterns among Canadian families.

Evaluation of a paediatric gluten-free food guide by children and youth with coeliac disease, their parents and health care professionals

There are currently no universal evidence-based nutrition guidelines that address the gluten-free (GF) diet for children/youth (4-18 years). A GF food guide was created to help children/youth with coeliac disease (CD) and their families navigate the complexities of following a GF diet. Guide formation was based on pre-guide stakeholder consultations and an evaluation of nutrient intake and dietary patterns. The study objective was to conduct an evaluation on guide content, layout, feasibility and dissemination strategies from end-stakeholder users (children/youth with CD, parents/caregivers and health care professionals). This is a cross-sectional study using a multi-method approach of virtual focus groups and an online survey to conduct stakeholder evaluations. Stakeholders included children/youth (4-18 years), their parents/caregivers in the coeliac community (n 273) and health care professionals (n 80) with both paediatric and CD experience from across Canada. Thematic analysis was performed on focus group responses and open-ended survey questions until thematic saturation was achieved. χ² and Fisher's exact statistical analyses were performed on demographic and close-ended survey questions. Stakeholders positively perceived the guide for content, layout, feasibility, ethnicity and usability. Stakeholders found the material visually appealing and engaging with belief that it could effectively be used in multi-ethnic community and clinical-based settings. Guide revisions were made in response to stakeholder consultations to improve food selection (e.g. child-friendly foods), language (e.g. clarity) and layout (e.g. organisation). The evaluation by end-stakeholders provided practical and patient-focused feedback on the guide to enable successful uptake in community and clinical-based settings.

Examining Elementary School Children's Knowledge about Food and Nutrition in Southwestern Ontario, Canada

Purpose: Knowledge is fundamental to helping children make nutritional choices that support lifelong healthy behaviours. This study (i) investigates elementary school children's knowledge about food and nutrition and (ii) identifies sociodemographic factors influencing children's reported knowledge.Methods: In 2017-2019, a survey was administered to 2443 students (grades 5-8) at 60 schools across southwestern Ontario, Canada, and a parent survey was used to validate self-reported sociodemographics. Multiple regression was used to analyse children's knowledge scores and related sociodemographic factors. A total knowledge score was calculated by summing correct responses derived from 46 individual questions in the student survey.Results: Mean total knowledge score was 29.2 out of a possible 46 points (63.5% correct). Students demonstrated some knowledge and awareness of strategies to encourage fruit and vegetable consumption, healthy food selection, nutrition, and food preparation skills, although knowledge of food guide recommendations and locally sourced produce were limited. Female sex, family income, and rurality were associated with higher knowledge scores.Conclusions: Results provide insight regarding strengths and gaps in elementary-school children's food and nutrition knowledge. Poor performance of students on specific food guide-related questions suggests that the general guidance of the 2019 Canada's Food Guide might be better understood by children and adolescents.

Perceptions of the 2019 Canada's Food Guide: a qualitative study with parents from Southwestern Ontario

In January 2019, Health Canada released a revised Canada's Food Guide (CFG). This study aimed to understand the perceptions of the 2019 CFG among Canadian parents with children aged 2-12 years. From October 2019-January 2020, 8 focus groups with parents from Southwestern Ontario were conducted using a semi-structured interview script focused on understanding perceptions of the 2019 CFG. A hybrid thematic approach with inductive and deductive analyses was used. Forty parents (72.5% mothers, 77.5% white) with diverse levels of education and income participated. Most parents were aware of the 2019 CFG. Positive perceptions of the 2019 CFG were that the guide was visually appealing and less biased from the food industry compared with previous guides. Parents also reported that the focus on eating behaviours could support healthy eating among their families. Negative perceptions included insufficient information about plant-based proteins, removal of milk and alternatives food group, and lack of representation of various cultures in the guide. Challenges to following the CFG recommendations, including time constraints and limited knowledge regarding how to identify and prepare plant-based proteins, were discussed. Parent perceptions of the CFG can help inform public health policies and behavioural-change strategies designed to support adherence to the 2019 CFG recommendations. Novelty: Awareness of the 2019 Canada's Food Guide (CFG) was high. Parents identified that the 2019 CFG was visually appealing and less biased from the food industry. Concerns about the recommendations of plant-based proteins, "exclusion" of dairies, and lack of cultural representation.

Translating "protein foods" from the new Canada's Food Guide to consumers: knowledge gaps and recommendations

The revised version of Canada's Food Guide, released in January 2019, issued new guidance by combining meat and alternatives with milk and alternatives into a single group called "protein foods" and emphasized selecting plant-based foods from this category more often. Though the changes represent a simple depiction of a healthy plate, the new Food Guide has opened knowledge gaps about protein foods and exposed new concerns about the interpretation and implementation of the Food Guide among vulnerable groups, particularly children and the elderly. To address key knowledge and research gaps, nutrition leaders need to reach a consensus on key messages to best inform the development of tools and resources to support practitioners in translating messages to consumers, including foodservice standards. Among consumers, families with young children are a primary target for these resources as they develop their life-long habits to ensure they have the knowledge and skills to select, prepare, and consume nutrient-rich protein foods. The new Food Guide provides an opportunity to address the existing knowledge gaps, develop tools and resources to support health professionals, and design interventions that will help Canadian families choose, prepare, and eat nutrient-rich protein foods. Novelty An updated Canadian regulatory framework is needed for protein labelling and content/health claims. There are knowledge gaps about protein foods consumption and food literacy needed to optimize nutritional health. Mandatory nutrition policies are needed to safeguard the provision of high-quality protein foods across institutions that serve children and older adults.

Health-related behaviours and their relationship with self-rated health among Canadian adults

BACKGROUND

Self-rated health (SRH) is a commonly used survey measure as a substitute for a clinical measure of health, which has demonstrated validity and reliability in a variety of populations. The referents that individuals incorporate into their self-evaluations have been shown to include health-related behaviours, though these relationships are not static. Our purpose was to describe and test for relationships between health-related behaviours and SRH among Canadian adults.

METHODS

We used pooled data from the Canadian Health Measures Surveys Cycles 3 (2012-13) and 4 (2014-15). All men and non-pregnant women aged 18 years and older were included (n = 6,789). We used binary logistic regression to test for relationships between health-related behaviours and SRH, including smoking status, adequate fruit and vegetable intake, inadequate sleep, alcohol use, and adequate physical activity.

RESULTS

The majority of respondents rated their health as good, very good, or excellent, though differences in SRH were found according to age group, highest level of household education, and income adequacy. Inadequate sleep was most strongly associated with poorer SRH among men and women combined, as compared to other health-related behaviours. Among women only, those who report heavy episodic drinking (OR, 2.64) or daily drinking (OR, 3.51) rated their health better, as compared to women who report low-risk alcohol use.

CONCLUSIONS

Sleep quality is an important predictor of SRH for both men and women. Second, sex/gender differences must be considered in strategies to address alcohol use, as we may not be fully appreciating potentially health-affirming qualities associated with alcohol use among women.

Assessment of Packaged Foods and Beverages Carrying Nutrition Marketing against Canada's Food Guide Recommendations

Canadians' food purchases consist largely of packaged processed and ultra-processed products, which typically fall outside the "core" foods recommended by Canada's Food Guide (CFG). Almost half of packaged products in Canada carry nutrition marketing (i.e., nutrient content and health claims). This study assessed whether packaged foods carrying nutrition marketing align with recommendations outlined in the 2007 CFG. Label data (n = 9376) were extracted from the 2013 Food Label Information Program (FLIP). Label components (including nutrition marketing) were classified using the International Network for Food and Obesity/NCDs Research, Monitoring and Action Support (INFORMAS) labelling taxonomy. The Health Canada Surveillance Tool (HCST) was used to assess the alignment of products to CFG. Each food or beverage was classified into one of five groups (i.e., Tier 1, Tier 2, Tier 3, Tier 4, "Others"). Products in Tier 1, 2 or water were considered "in line with CFG". Most products in the analyzed sample were classified as Tier 2 (35%) and Tier 3 (27%). Although foods with nutrition marketing were significantly more likely to align to CFG recommendations (p < 0.001), many products not "in line with CFG" still carried nutrition marketing. This study provides important baseline data that could be used upon the implementation of the new CFG.