Faculty Bibliography

PURPOSE OF REVIEW:This study aimed to prioritise key indicators for monitoring and assessing the healthiness of food environments, including at the country level. We conducted a literature review and engaged a consortium of researchers from the International Network for Food environments Research, Monitoring and Action Support (INFORMAS) as part of a prioritisation process. RECENT FINDINGS:We identified 375 existing indicators that had been used to measure food environments. Researchers were consulted on priorities and implementation considerations through a series of interviews, focus groups and an online survey. Sixteen indicators were short-listed for prioritisation, and five indicators were identified as key priorities: proportion of packaged food and drinks products classified as unhealthy; frequency of exposure to unhealthy food promotion; price of a healthy diet and the price of the current diet as a proportion of income; proportion of schools in which unhealthy foods are provided or available for sale regularly; and application of back of package and front of package food labelling. SUMMARY:This study lays the groundwork for standardised and scalable food environment monitoring that can drive policy action to support healthier food environments globally. Future areas for inquiry include tools to classify healthy foods and outlets, which could be adapted across policy areas, and the establishment of evidence-informed benchmarks for assessment of each indicator. SUPPLEMENTARY INFORMATION:The online version contains supplementary material available at 10.1007/s13679-026-00705-8.

BACKGROUND:Sugary drink taxes have been implemented in several U.S. jurisdictions, but we know little about the impact of taxes on calories purchased in restaurants. The impact may differ in restaurant (vs. non-restaurant) settings because restaurant consumers may be less likely to travel to other jurisdictions for a single meal, choose no beverage or non-taxed beverages, decrease their beverage size, or order combo meals where the drink is bundled with other items at a single price. METHODS AND FINDINGS/RESULTS:We used six years of transaction-level sales data (2015-2020) from 7,341 Taco Bell restaurant locations to estimate the association of sugary drink policies with beverage calories purchased in the drive-through setting of fast food restaurants over time. Taco Bell restaurants represents a large sample size of data from several U.S. jurisdictions across a long follow-up period, which is unique in the literature. We defined the treatment group as restaurants in five jurisdictions where taxes were ever implemented (Albany, CA; Cook County, IL; Oakland, CA; Philadelphia, PA; Seattle, WA) (n = 60 restaurants). We identified a group of comparison restaurants where taxes were never implemented using synthetic control methods (n = 60 restaurants). We used a difference-in-differences design with calendar month and restaurant fixed effects to compare changes in outcomes between groups between the baseline (3-14 months prior to tax implementation) and 3- to 24-month follow-up periods, overall and by jurisdiction. Our primary outcome measure was beverage calories per transaction, from individually-purchased beverages and combo meals (separately). In the baseline period, average beverage calories per transaction were 51.1 (SD = 8.6) in the tax group and 42.3 (SD = 7.4) in the comparison group; and 119.5 (SD = 15.3) and 115.0 (SD = 23.0) beverage calories per transaction in combo meals. Overall, we observed no association between taxes and changes in beverage calories per transaction between groups during the follow-up period, including from individual beverage items (difference-in-differences = -0.3 (95% CI [-0.8, 1.2]) and combo meals (difference-in-differences = -4.3 (95% CI [-13.5, 5.0]). We observed similar results by location, except in Oakland, CA, where customers purchased 16.8 (95% CI 19.6, 14.1) fewer beverage calories per transaction from combo meals; the association was null after conditioning on the purchase of a beverage (difference-in-differences = -1.01 [-4.93, 2.92)]). The main limitations of our study methodology include the exclusion of beverage calorie data from in-store transactions and that the majority of the restaurants in our sample were located in Cook County. CONCLUSIONS:Though we observed differences in certain jurisdictions, overall our findings suggest that sugary drink taxes may not be effective in reducing beverage calorie consumption in fast food restaurants.

BACKGROUND:The school environment plays a vital role in shaping children's health and well-being. Nutrition education supports health promotion and disease prevention; however, it is unclear how comprehensive curricula are in the content they cover. This study explored the content of K-12 nutrition curricula in US public schools. METHODS:We analyzed nutrition education curricula from the 2023-2024 school year across a target sample of 50 states. Materials were collected through online searches and phone calls to districts and schools. We employed content analysis to assess nutrition concepts and modes of curriculum delivery, using a codebook to systematically code the curricula. RESULTS:We obtained 110 curricula across 38 states. Common concepts included macronutrients (54.5%), micronutrients (55.4%), food groups (58%), and the benefits of good nutrition (69%). Fewer curricula addressed consequences of poor nutrition (44.5%) or behavioral changes like portion size (38.1%). Most curricula (87.2%) used didactic methods, with only 19.5% incorporating hands-on activities. Broader topics such as environmental impacts of food choices (17.2%) were less common. IMPLICATIONS FOR SCHOOL HEALTH POLICY, PRACTICE, AND EQUITY/UNASSIGNED:Nutrition education plays a critical role in shaping children's long-term health outcomes; however, challenges remain in ensuring consistent and high-quality instruction. CONCLUSIONS:Nutrition education in the US focuses on core nutrition concepts and often relies on didactic methods, with limited hands-on activities. This highlights the need for more engaging, standardized programs.

OBJECTIVE:To evaluate the healthfulness of the food/beverage products featured by TikTok influencers whose audiences include millions of adolescents. DESIGN/METHODS:In a cross-sectional study, we collected the maximum available up to 100 videos from the top 100 TikTok influencers in the US-based on views, likes, comments, and shares-in July 2022. For each video, we identified the most prominent food/beverage product featured. We used the Nutrient Profile Index (NPI) to classify food products as healthy/unhealthy. We grouped beverages by category. SETTING/METHODS:TikTok. PARTICIPANTS/METHODS:n/a. RESULTS:Our sample included 8,871 videos, 1,360 (15.3%) of which featured at least one food (n=755, 55.5%), beverage (n=580, 42.6%), or dietary supplement (n=25, 1.8%). Mean NPI score for foods was 54.73 (SD 19.95). Most foods (58%) were considered unhealthy, with a 20-percentage-point difference between branded (70.8%) and unbranded (50.8%) foods. Alcoholic (n=154, 26.6%) and energy (n=149, 25.7%) drinks were the most featured overall. Among branded beverages, energy drinks were the largest category (n=148, 38.9%). Among unbranded beverages, alcoholic drinks were the largest category (n=73, 36.5%). CONCLUSIONS:More than half of the foods promoted by TikTok influencers were considered unhealthy and most beverages featured were alcoholic and energy drinks. Many foods and a large share of alcoholic beverages were unbranded, either reflecting genuine influencer preferences or potentially masking the true extent of commercial marketing. Given the reach of influencers, including millions of adolescents, stronger regulations are needed for social media platforms, influencers, and brands to protect consumers from undue harm from food/beverage marketing.

INTRODUCTION/UNASSIGNED:This study leverages advertising industry data to quantify social media advertising expenditures and advertising impressions of the food and beverage industry on Facebook, Twitter/X, and Instagram from January 2019 to August 2021. METHODS/UNASSIGNED:=18 months). Primary outcomes were monthly trends expenditures of food/beverage advertising and the number of views and expenditures of food/beverage advertising by platform (e.g., TV, online, mobile, print). Primary outcomes was measured by monthly expenditures by (1) social media company, (2) brand, and (3) before COVID-19 versus the first year of the pandemic. RESULTS/UNASSIGNED:for interaction<0.001). CONCLUSIONS/UNASSIGNED:These data reveal that the food/beverage industry spends at least $2.8 billion on social media advertising, which generate billions of views for their products online. Determining adults' exposure to social media food advertising is critical for understanding the upstream factors that shape the risk for diet-related diseases.

INTRODUCTION/BACKGROUND:Menu labels were federally mandated in May 2018, but the authors are not aware of any work that has evaluated the impact of the national rollout of this legislation in restaurants using a comparison group to account for potential bias. METHODS:Using synthetic control methods, Taco Bell restaurants that implemented menu labels after nationwide labeling (n=5,060 restaurants) were matched to restaurants that added calorie labels to menus after local labeling legislation (and prior to nationwide labeling). The effect of menu labeling on calories purchased per transaction after nationwide labeling between groups (i.e., "later-treated" and "early-treated" restaurants) was estimated using a two-way fixed effects regression model, with time modeled as relative month from implementation and fixed effects for calendar month and restaurant. RESULTS:In the baseline period, average calories per transaction was 1,242 (SD=178) in the national menu labeling group and 1,245 (SD=183.9) in the comparison group, with parallel trends between groups. Difference-in-differences model results indicated that transactions from restaurants in the national menu labeling group included 7.4 (95% CI: 7.3, 7.5) more calories than was predicted based on the trend in the comparison group. Average number of total transactions per month decreased ∼2% more in the national menu labeling group relative to the comparison group. CONCLUSIONS:Negligible changes were observed in calories purchased and number of transactions in restaurants that added calorie labels due to national legislation, above and beyond secular changes. Other strategies may be necessary to promote meaningful decreases in daily calories purchased in restaurants going forward.

BACKGROUND:Glucagon-like peptide-1 (GLP-1) medications, recently introduced in the United States for treating type 2 diabetes and obesity, have sparked interest and discussion on social media. Social media has emerged as a prominent platform for the distribution of health information; its vast user base and accessibility make it a popular resource for individuals seeking medical advice. This study characterized GLP-1 medication-related content on Instagram about 3 critical areas of public health: women's health, access from nontraditional settings, and barriers to access. OBJECTIVE:This study aimed to perform passive content analysis in which information patterns would be observed from Instagram posts. METHODS:We examined 40 GLP-1 medication-related Instagram posts to develop a list of the most frequently used hashtags. In total, 10 "top posts" were collected for 7 days (July 11-17, 2023) for 11 study hashtags (eg, #Ozempic). Duplicates, deleted posts or accounts, non-English content, and unrelated posts were removed. Each post was reviewed by at least 2 coders. Coding discrepancies were resolved through discussion. RESULTS:The final sample included 239 posts. More than half of the posts (130/239, 54%) were from GLP-1 medication users. Raters perceived most users to be female (90/97, 92.8%); inferred that most used medications for weight loss (69/130, 53.1%); determined the most frequently noted health condition was polycystic ovarian syndrome (25/130, 19.2%); and judged posts to have positive sentiments about well-being (64/130, 49.2%) and toward the medications (100/130, 76.9%). About a quarter of the posts (55/239, 23%) offered services for obtaining GLP-1 medications; GLP-1 medications were perceived to be accessible via nontraditional health care settings (eg, medical spas) versus traditional settings (39/239,16.3% vs 12/239, 5%). Most users (78/97, 80.4%) were perceived to be White; barriers to access (ie, shortages, insurance, and cost) were infrequently mentioned (6/239, 2.5%; 3/239, 1.3%; and 1/239, 0.4%, respectively). CONCLUSIONS:Our findings highlight the perceived benefits of GLP-1 medications for women's health, the need to increase health literacy about where to safely access medications, and how additional attention is needed for equitable access to GLP-1 medications. The onus is on social media companies to promote content that is safe and for the health care system and its payers to address health care inequities for historically marginalized communities.

BACKGROUND/UNASSIGNED:As part of an initiative to increase COVID-19 testing uptake among underserved populations, we conducted focus groups to explore experiences and attitudes related to testing in two understudied groups-young adults and socially-isolated older adults-recruited from residents living in New York City Housing Authority (NYCHA) public housing developments. MATERIALS AND METHODS/UNASSIGNED: = 32 total). To identify themes, we conducted a rapid qualitative analysis approach. RESULTS/UNASSIGNED:Residents discussed four overarching themes: (1) trusted COVID-19 information sources; (2) reasons for testing; (3) barriers to testing, and (4) strategies to increase testing uptake. Findings were similar across the two age groups; both cited multiple sources of information, including major media outlets, government or public health officials, and doctors. Young adults were more likely to access information from social media despite concerns about misinformation. Participants identified several barriers to testing, such as long lines, insurance coverage, and cost. Young adults reported that at-home COVID testing was more convenient, while older adults expressed concern about accuracy and administering the tests themselves. Recommendations for improving testing emphasized easier access via a central well-known location, in-home visits, free or low-cost tests, and increased outreach. CONCLUSION/UNASSIGNED:Mainstream media, doctors and public agencies remain the most trusted sources of information among younger and older residents alike. Many resident recommendations involved leveraging NYCHA infrastructure, highlighting the continuing role public housing authorities can play in COVID-19 and other health initiatives.