Updating the dietary guidelines for Americans: status and looking ahead

The Relationship between Whole-Milk Dairy Foods and Metabolic Health Highlights an Opportunity for Dietary Fat Recommendations to Evolve with the State of the Science

The science of dietary fats has evolved, and a body of evidence indicates they are complex bioactive nutrients that have different effects on health depending on their food source, chain length, degree of saturation, and other factors that can be affected by food processing, handling, and storage. As such, it is becoming increasingly clear that the effects of foods on obesity and metabolic health cannot be predicted simply with their fat content. The aim of this opinion article is to provide a brief overview of select recent research on the effects of whole-milk dairy foods on body composition and indicators of metabolic health across the lifespan to show the gap between current knowledge and dietary guidance. As the state of the science on dietary fats and human health evolves to consider the complexity of food matrices, the total nutrient package they deliver, and the health impacts associated with dietary patterns, so too must guidelines for dietary fat.

Interpretation and Understanding of the Dietary Guidelines for Americans Consumer Messages Among Low-Income Adults

Objective: The objective of this study was to determine the interpretation, understanding, and implementation of the Dietary Guidelines for Americans (DGA) consumer messages among low-income adults and compare findings to perceptions of the messages for consumers by community nutrition educators.Methods: In this mixed methods, cross-sectional study, a convenience sample of low-income adults (n = 98) with a child between the ages of 3 and 10 years old and nutrition educators (n = 9) were interviewed individually about the DGA messages, food-related behaviors, and barriers related to consuming fruits, vegetables, and whole grains. Interviews were audio-taped, transcribed verbatim, and analyzed using the inductive approach. Interpretation and ranking of the clarity and ease of the DGA messages by low-income adults and nutrition educators and perceptions about the messages were assessed. Descriptive statistics were conducted for demographic data and Fisher's exact tests were used to examine differences regarding the clarity and ease of the messages among low-income adults and nutrition educators.Results: According to the interview results, messages that tended to be misinterpreted most frequently were on topics such as sodium, fruit and vegetables, portions, and whole grain intake. Low-income adults and nutrition educators also differed in perceptions for the message clarity addressing whole grain servings (p = .001), avoiding oversized portions (p = .002), and comparing sodium (p < .001).Conclusions: Improvements in the DGA consumer messages are warranted to improve clarity and feasibility for low-income adults through new communication tools or strategies that complement the DGA.

Habit formation intervention to prevent obesity in low-income preschoolers and their mothers: A randomized controlled trial protocol

BACKGROUND

Low-income and racial/ethnic minority mothers and their young children are at increased risk for obesity. Lack of access to evidence-based obesity prevention and treatment services further contributes to these disparities.

METHODS

This two-arm, parallel, randomized controlled trial (RCT) tests the effectiveness of a simple obesity intervention (HABITS) delivered as part of ongoing home visitation services, compared to the existing home visitation services without obesity-related content on mothers' and children's obesity risks. HABITS focuses on habit formation and modifications of food and activity cues in the home to support habit formation. Habit formation is focused on improving five behaviors: 1) fruits/vegetables, 2) fried foods, 3) sugar-sweetened beverages, 4) physical activity and 5) self-monitoring. Participants will be 298 mothers (>50% African American; 100% low income) and their children (3-5yo at baseline) enrolled in a home visitation program in central Alabama. Home visitors will be randomly assigned to deliver the home visitation curriculum with or without HABITS as part of their weekly home visits for 9 months. Assessments of mothers (weight, waist circumference, and habit strength of targeted behaviors), children (rate of weight gain), and the food/activity household environment will be conducted at enrollment, post-intervention (9 month), and one year post-intervention follow-up.

DISCUSSION

This research is poised to have a substantial impact because the delivery modalities of current obesity efforts disproportionally restrict the reach and engagement of underserved, low-income children and their caregivers who are most at-risk for health and obesity disparities.