Sugar-Sweetened and Diet Beverage Consumption in Philadelphia One Year after the Beverage Tax

Associations of the Philadelphia sweetened beverage tax with changes in adult body weight: an interrupted time series analysis

Background

Sweetened beverage taxes are associated with large decreases in sugar-sweetened beverage sales, but their effects on weight outcomes are unclear. We examined associations of the 2017 Philadelphia beverage tax with changes in adult weight outcomes.

Methods

We obtained electronic health record data on adults 18-65 years old in Philadelphia (intervention) and other areas of Pennsylvania and New Jersey (control) from 2014 to 2019. Controlled interrupted time series models compared post-tax changes in trends of body mass index (BMI, primary outcome) and obesity prevalence (secondary outcome). A panel sample comprised 175,675 adults with at least one BMI measure in both the pre-tax (2014-2016) and post-tax (2017-2019) periods. A cross-sectional sample comprised 587,121 adults with at least one BMI measure from 2014 to 2019.

Findings

Before tax implementation, Philadelphia panel patients had a mean BMI of 30.4 kg/m2 and an obesity prevalence of 44.5%. After implementation, in the panel sample, there was a -0.03 kg/m2 (95% CI: -0.07, 0.02) per quarter decrease in BMI vs. control, implying a -0.32 kg/m2 (-0.85, 0.20) change at the end of the 3-year study period. In the cross-sectional sample, there was a -0.05 kg/m2 (95% CI: -0.09, -0.01) per quarter decrease in BMI vs. control, implying a -0.60 kg/m2 (-1.04, -0.16) change at the end of the study period. Results for obesity prevalence were consistent with the BMI results.

Interpretation

There was some limited evidence of a decrease in BMI and obesity prevalence in Philadelphia 3 years after beverage tax implementation. Replication of these results is needed.

Funding

National Institutes of Health.

Effectiveness of implemented global dietary interventions: a scoping review of fiscal policies

BACKGROUND

Although the World Health Organisation (WHO) has proposed the use of fiscal policies to mitigate consumption externalities such as overweight and obesity-related diseases, very little is known about the impacts of the different types and framing of national and/or regional fiscal policies that have been implemented over the years. There is the need to provide up-to-date evidence on the impact of fiscal policies that have been enacted and implemented across the globe.

METHODS

We conducted a scoping review of all implemented government fiscal policies in the food and drinks sector to identify the different types of fiscal policies that exist and the scope of their impact on consumers as well as the food environment. Electronic databases such as the Web of Science and Google Scholar were used to search for appropriate literature on the topic. A total of 4,191 articles were retrieved and 127 were synthesized and charted for emerging themes.

RESULTS

The results from this review were synthesized in MS Excel following Arksey & O'Malley (2005). Emerging themes were identified across different countries/settings for synthesis. The results confirms that fiscal policies improve consumers' health; increase the prices of foods that are high in fats, sugar, and salt; increase government revenue; and shift consumption and purchases towards healthier and untaxed foods.

CONCLUSION

Governments already have the optimum tool required to effect changes in consumer behaviour and the food environment.

Public policy interventions for preventing and treating obesity: scoping review

CONTEXT

Obesity is a multicausal social problem and a pandemic, and it presents a public health challenge in many countries. Hence, public health interventions have been used in an endeavour to prevent and/or control increased obesity among populations.

OBJECTIVE

This review study aimed to provide an overview of the academic literature and to analyze the strategies involved in the main public policies focused on preventing and controlling obesity in a number of countries.

DATA SOURCES

MEDLINE/PubMed, Web of Science, and LILACS databases were searched.

DATA EXTRACTION

Original studies were included for which the core objective was related to real-life public policy interventions for obesity.

DATA ANALYSIS

The studies were organized according to their characteristics, and the qualitative analysis was based on the categorization proposed by the author Poulain. The review included 41 studies and identified 15 types of interventions focused on obesity; the largest proportion of actions were developed in school and city environments and were geared toward behavioral change, supported by direct or indirect government action. It was observed that many strategies focused on environmental line through regulatory and legislative measures, and health promotion geared toward the individual was based on the dissemination of information as a means for behavioral change. A smaller focus was given to individual care and treatment, and participative actions in the community.

CONCLUSION

The design of public health strategies applicable to obesity as proposed by Poulain provides a valid model for evaluating interventions. The behavioral approach involving guidance through health education toward a healthy lifestyle prevails in public policies, indicating a movement toward accountability of individuals. However, it is necessary to deepen the debate on the social structures that determine obesity (and which limit possibilities of choice), aligned with cultural change regarding its occurrence, and to employ care strategies based on scientific evidence and which focus on the needs of the subjects.

Leveraging Multiyear, Geospatial Social Media Data for Health Policy Evaluations: Lessons From the Philadelphia Beverage Tax

CONTEXT

Public reactions to health policies are vital to understand policy sustainability and impact but have been elusively difficult to dynamically measure. The 2021 launch of the Twitter Academic Application Programming Interface (API), allowing for historical tweet analyses, represents a potentially powerful tool for complex, comprehensive policy analyses.

OBJECTIVE

Using the Philadelphia Beverage Tax (implemented January 2017) as a case study, this research extracted longitudinal and geographic changes in sentiments, and key influencers in policy-related conversations.

DESIGN

The Twitter API was used to retrieve all publicly available tweets related to the Tax between 2016 and 2019.

SETTING

Twitter.

PARTICIPANTS

Users who posted publicly available tweets related to the Philadelphia Beverage Tax (PBT).

MAIN OUTCOME

Tweet content, frequency, sentiment, and user-related information.

MEASURES

Tweet content, authors, engagement, and location were analyzed in parallel to key PBT events. Published emotional lexicons were used for sentiment analyses.

RESULTS

A total of 45 891 tweets were retrieved (1311 with geolocation data). Changes in the tweet volume and sentiment were strongly driven by Tax-related litigation. While anger and fear increased in the months prior to the policy's implementation, they progressively decreased after its implementation; trust displayed an inverse trend. The 50 tweeters with the highest positive engagement included media outlets (n = 24), displaying particularly high tweet volume/engagement, and public personalities (n = 10), displaying the greatest polarization in tweet sentiment. Most geo-located tweets, reflecting 321 unique locations, were from the Philadelphia region (55.2%). Sentiment and positive engagement varied, although concentrations of negative sentiments were observed in some Philadelphia suburbs.

CONCLUSIONS

Findings highlighted how longitudinal Twitter data can be leveraged to deconstruct specific, dynamic insights on public policy reactions and information dissemination to inform better policy implementation and evaluation (eg, anticipating catalysts for both heightened public interest and geographic, sentiment changes in policy conversations). This study provides policymakers a blueprint to conduct similar cost and time efficient yet dynamic and multifaceted health policy evaluations.

Impact of soda tax on beverage price, sale, purchase, and consumption in the US: a systematic review and meta-analysis of natural experiments

Background

As a primary source of added sugars in the US diet, sugar-sweetened beverage (SSB) consumption is presumed to contribute to obesity prevalence and poor oral health. We systematically synthesized and quantified evidence from US-based natural experiments concerning the impact of SSB taxes on beverage prices, sales, purchases, and consumption.

Methods

A keyword and reference search was performed in PubMed, Web of Science, Cochrane Library, Scopus, and EconLit from the inception of an electronic bibliographic database to Oct 31, 2022. Meta-analysis was conducted to estimate the pooled effect of soda taxes on SSB consumption, prices, passthrough rate, and purchases.

Results

Twenty-six natural experiments, all adopting a difference-in-differences approach, were included. Studies assessed soda taxes in Berkeley, Oakland, and San Francisco in California, Philadelphia in Pennsylvania, Boulder in Colorado, Seattle in Washington, and Cook County in Illinois. Tax rates ranged from 1 to 2 ¢/oz. The imposition of the soda tax was associated with a 1.06 ¢/oz. (95% confidence interval [CI] = 0.90, 1.22) increase in SSB prices and a 27.3% (95% CI = 19.3, 35.4%) decrease in SSB purchases. The soda tax passthrough rate was 79.7% (95% CI = 65.8, 93.6%). A 1 ¢/oz. increase in soda tax rate was associated with increased prices of SSBs by 0.84 ¢/oz (95% CI = 0.33, 1.35).

Conclusion

Soda taxes could be effective policy leverage to nudge people toward purchasing and consuming fewer SSBs. Future research should examine evidence-based classifications of SSBs, targeted use of revenues generated by taxes to reduce health and income disparities, and the feasibility of redesigning the soda tax to improve efficiency.

An umbrella review of the effectiveness of fiscal and pricing policies on food and non-alcoholic beverages to improve health

Poor quality diets represent major risk factors for the global burden of disease. Modeling studies indicate a potential for diet-related fiscal and pricing policies (FPs) to improve health. There is real-world evidence (RWE) that such policies can change behavior; however, the evidence regarding health is less clear. We conducted an umbrella review of the effectiveness of FPs on food and non-alcoholic beverages in influencing health or intermediate outcomes like consumption. We considered FPs applied to an entire population within a jurisdiction and included four systematic reviews in our final sample. Quality appraisal, an examination of excluded reviews, and a literature review of recent primary studies assessed the robustness of our results. Taxes and, to some extent, subsidies are effective in changing consumption of taxed/subsidized items; however, substitution is likely to occur. There is a lack of RWE supporting the effectiveness of FPs in improving health but this does not mean that they are ineffective. FPs may be important for improving health but their design is critical. Poorly designed FPs may fail to improve health and could reduce support for such policies or be used to support their repeal. More high-quality RWE on the impact of FPs on health is needed.

Do sugar-sweetened beverage taxes improve public health for high school aged adolescents?

Sugar-sweetened beverage taxes have become an increasingly popular policy to combat the worldwide obesity epidemic, but relatively little is known about their impact on health outcomes, particularly among high school aged students. In this paper, I use public-use data from the Youth Risk Behavioral Surveillance System to determine whether high school students living in three of the American cities which have implemented Sugar-sweetened beverage taxes have experienced public health improvements. Using an event-study design that compares outcomes in treated districts to a group of similar control districts, I find reductions in soda consumption in Philadelphia and average body mass index in Philadelphia, San Francisco and Oakland, with suggestive evidence that the improvements are concentrated among female and non-white respondents in both cases.

Systematic review on fiscal policy interventions in nutrition

Introduction

Both the World Health Organization and the Lancet Series on Adolescent nutrition recommend that governments adopt fiscal policies to combat diet-related non-communicable diseases (NCDs). However, rigorous, systematic evidence regarding the effects of these interventions is lacking.

Methods

We synthesize the available evidence regarding the impacts of taxes and subsidies that directly affect consumer prices on availability and accessibility of foods and beverages, purchasing behavior, diet quality, health and well-being outcomes as well as considerations for implementation, sustainability and equity.

Results

Our initial search returned 2,113 de-duplicated studies, and ultimately 24 impact evaluations and two systematic reviews met final eligibility criteria and represented unique evaluations. Our meta-analysis of these studies suggests that taxes may decrease purchases of taxed beverages (SMD = -0.14 [95% CI: -0.29 to -0.07], n = 15). Results should be interpreted cautiously due to considerable heterogeneity (Q(14) = 335.19, p = 0.01,τ ^ 2 = 0.03 , I 2 = 95.82%).

Discussion

The evidence base is too limited to draw conclusions about the effects of taxes on beverages and calorie-dense foods on purchases, or on the effects of subsidies on purchasing or diet quality. Overall, the evidence base is inconclusive on whether fiscal policies can meaningfully influence the availability and accessibility of foods and beverages, diet quality, and health outcomes. Policymakers implementing fiscal policies should consider information campaigns on health benefits and health risks associated with certain food and beverage consumption. For taxes, exposure to health information may amplify signaling effects of taxes and reduce avoidance behaviors, such as cross-border shopping. Future evaluations should diversify data sources to better understand impacts on diet and health outcomes.

Outcomes Following Taxation of Sugar-Sweetened Beverages: A Systematic Review and Meta-analysis

Importance

More than 45 countries and several local jurisdictions have implemented sugar-sweetened beverage (SSB) taxes to improve nutrition and population health, and evidence on their outcomes to date is essential to inform policy discussions. Responding to this need, the World Health Organization commissioned a systematic literature review on the outcomes of fiscal policies, including SSB taxes.

Objective

To assess the associations of implemented SSB taxes with prices, sales, consumption, diet, body weight, product changes, unintended consequences, health, and pregnancy outcomes.

Data Sources

Searches of 8 bibliographic databases (Business Source Complete, Cochrane Central Register of Controlled Trials, Cochrane Database of Systematic Reviews, CINAHL, EconLit, PsycINFO, PubMed, and Scopus) were performed from database inception through June 1, 2020, with no language or setting restrictions. Grey literature was assessed using 14 sources and government websites.

Study Selection

The review included primary studies of implemented SSB taxes.

Data Extraction and Synthesis

The review followed the Preferred Reporting Items for Systematic Reviews and Meta-analyses guidelines. For prices, sales and consumption, results were meta-analyzed using a 3-level random-effects model. Study quality was assessed at the outcome level.

Main Outcomes and Measures

Tax pass-through rate for prices, percentage reduction in SSB demand, and price elasticity of demand for sales and consumption. Heterogeneity was assessed using τ2 and the I2 statistic.

Results

A total of 86 articles were eligible, with 62 studies contributing to the meta-analysis. The overall tax pass-through rate was 82% (95% CI, 66% to 98%; P < .001, I2 = 99%), suggesting tax undershifting. The demand for SSBs was highly sensitive to tax-induced price increases, with the price elasticity of demand of -1.59 (95% CI, -2.11 to -1.08; P < .001; I2 = 100%) and a mean reduction in SSB sales of 15% (95% CI, -20% to -9%; P < .001; I2 = 100%). There was no evidence of substitution to untaxed beverages, and changes in SSB consumption were not significant. The narrative synthesis found reformulation and reduced sugar content of taxed beverages for tiered taxes, cross-border shopping in most studies of local-level taxes, and no negative changes in employment. Data on the heterogeneity of SSB tax outcomes across subpopulations were limited.

Conclusions and Relevance

In this systematic review and meta-analysis of implemented SSB taxes worldwide, SSB taxes were associated with higher prices and lower sales of taxed beverages.

Sustained Impact of the Philadelphia Beverage Tax on Beverage Prices and Sales Over 2 Years

INTRODUCTION

It is unclear whether changes in beverage price and sales after beverage tax implementation can be sustained long term. This study aims to quantify the changes in beverage prices and sales in large retailers 2 years after the implementation of the 1.5 cents per ounce Philadelphia beverage tax.

METHODS

Data on price and volume sales of beverages and potential food substitutes were collected from 109 supermarkets, 45 mass merchandizers, and 350 pharmacies in Philadelphia, Baltimore (control), and Pennsylvania ZIP codes bordering Philadelphia (to investigate potential cross-border shopping for tax avoidance). Difference-in-differences analyses compared beverage prices and volume sales in the year before tax implementation (2016) to 2 years after (2018). Data were analyzed in 2020-2021.

RESULTS

Difference-in-differences analyses found that after tax implementation, taxed beverage prices in Philadelphia increased by 1.02 cents per ounce (95% CI=0.94, 1.11; 68% pass through), and taxed beverage volume sales in stores decreased by 50% (95% CI=36%, 61%). After accounting for cross-border shopping, taxed beverage volume sales decreased in Philadelphia by 35% in 2018. Volume sales of nontaxed beverages did not change after tax implementation (difference-in-differences=4%, 95% CI= -3%, 12%). Volume sales of nontaxed beverage concentrates increased on average by 34% (95% CI=19%, 51%), but there was no evidence of substitution to high-calorie foods.

CONCLUSIONS

There was a large reduction in taxed beverage volume sales 2 years after Philadelphia tax implementation, even after accounting for cross-border shopping. Increases in nontaxed beverage concentrate sales likely partially offset this decline, but there was no evidence of post-tax food substitution.

Purchases of Nontaxed Foods, Beverages, and Alcohol in a Longitudinal Cohort After Implementation of the Philadelphia Beverage Tax

BACKGROUND

Evidence suggests that sweetened beverage taxes reduce taxed beverage purchases, but few studies have used individual-level data to assess whether these taxes affect purchases of nontaxed foods, beverages, and alcohol. Additionally, research has not examined whether sweetened beverage taxes influence restaurant purchases.

OBJECTIVES

We assessed changes in individuals' purchases of taxed beverage types; low-calorie/low-added-sugar nontaxed beverages; high-calorie/high-added-sugar nontaxed beverages, foods, and alcohol; and beverages from restaurants following implementation of the 1.5 cent-per-ounce Philadelphia sweetened beverage tax.

METHODS

A longitudinal cohort of adult sugar-sweetened beverage consumers in Philadelphia (n = 306; 67% female; mean age: 43.9 years) and Baltimore (n = 297; comparison city without a beverage tax; 58% female; mean age: 41.7 years) submitted all food and beverage receipts during 2-week periods at baseline and at 3, 6, and 12 months posttax. Difference-in-differences analyses compared changes in purchases from pre- to posttax in Philadelphia to changes in Baltimore.

RESULTS

Purchases of taxed juice drinks [ratio of incidence rate ratios (RIRR) = 0.62; 95% CI, 0.42-0.91], but not other taxed beverage types, decreased in Philadelphia compared to Baltimore following the tax. Analyses did not find changes in purchases of low-calorie/low-added-sugar nontaxed beverages, such as water or milk. Additionally, analyses did not find increases in purchases of most high-calorie/high-added-sugar nontaxed products, including alcohol, juice, candy, sweet snacks, salty snacks, and desserts. Purchases of beverage concentrates increased in Philadelphia (RIRR = 2.22; 95% CI, 1.39-3.54).

CONCLUSIONS

In this difference-in-differences analysis, the Philadelphia beverage tax was associated with reduced purchases of taxed juice drinks. Purchases of beverage concentrates increased after the tax, but no increases were observed for other high-calorie/high-added-sugar nontaxed foods, beverages, or alcohol.

Analysis of Public Testimony About Philadelphia's Sweetened Beverage Tax

INTRODUCTION

Although interest in beverage taxes has increased in recent years, industry opposition and other challenges have limited their spread in the U.S. Because beverage tax proposals are often unsuccessful, there is limited empirical evidence to inform advocacy efforts. Philadelphia's 1.5 cent-per-ounce tax on sweetened beverages provides an opportunity to understand how public testimony for and against the tax was framed in a city that ultimately passed the policy.

METHODS

A content analysis of all public testimony about the beverage tax presented to the Philadelphia City Council in 2016 was conducted. Testimonies were coded for policy stance (protax or antitax), speaker type, and specific protax or antitax arguments. Quantitative data were analyzed in 2018-2019 using chi-square tests.

RESULTS

A total of 177 unique testimonies were identified, which included 40 protax arguments (grouped into 11 themes) and 31 antitax arguments (grouped into 10 themes). Most testimonies were delivered orally, and most speakers argued in favor of the tax (58%). Among tax supporters, funding early childhood education was the most common argument (71%), whereas tax opponents most frequently argued that sugar-sweetened beverages were the wrong target for the tax (50%).

CONCLUSIONS

This analysis of public testimony revealed that protax advocacy efforts highlighted the revenue benefits for early childhood education and community infrastructure rather than the tax's potential to reduce sweetened beverage consumption and improve health. By contrast, antitax arguments centered on the unfairness of targeting a single industry, potential negative economic impacts, and the perceived lack of evidence that the tax would influence consumer behavior.

Association of a Sweetened Beverage Tax With Soda Consumption in High School Students

Importance

Sweetened beverage taxes are one policy approach to reduce intake of added sugars. Soda is the leading source of added sugars in the US diet, but few studies have examined how such taxes influence sweetened beverage intake in youth.

Objective

To estimate the association between the Philadelphia, Pennsylvania, beverage tax and adolescent soda intake.

Design, Setting, and Participants

This economic evaluation of school district-level Youth Risk Behavior Surveillance System data from September 2013 to December 2019 compared weekly soda intake in high school students in Philadelphia, a city with a sweetened beverage tax, with that in 7 comparison cities without beverage taxes. Difference-in-differences regression modeling was used to estimate change in soda intake in Philadelphia compared with control cities. Secondary analyses compared 100% juice and milk intake to explore potential substitution associations. Subgroup analyses evaluated differences by race and ethnicity and weight status (obesity and overweight or obesity). Analyses were performed between August 20 and October 20, 2020. School districts that had weighted data and a survey question on weekly soda intake from 2013 to 2019 were included. The study included high school students, grades 9 to 12, in school districts participating in the Youth Risk Behavior Surveillance System from 2013 to 2019.

Exposures

Implementation of a sweetened beverage tax in Philadelphia, Pennsylvania, in January 2017.

Main Outcomes and Measures

Reported weekly servings of soda, 100% juice, and milk.

Results

A total of 86 928 participants (weighted mean [SD] age, 15.8 [1.3] years; 49% female) from 8 US cities (including Philadelphia) were included. Before the tax, adolescents in the 7 comparison cities had a mean intake of 4 servings of soda per week compared with 5.4 servings per week in Philadelphia. Philadelphia's tax was associated with a reduction of 0.81 servings of soda per week (95% CI, -1.48 to -0.14 servings; P = .02) 2 years after tax implementation. There was no significant difference in 100% juice or milk intake, although Philadelphia adolescents consumed more juice than those in nontaxed cities. In subgroup analyses, the tax was associated with a reduction of 1.13 servings per week in Hispanic/Latinx adolescents (95% CI, -2.04 to -0.23 servings; P = .01) and 1.2 servings per week in adolescents with obesity (95% CI, -2.33 to -0.13 servings; P = .03).

Conclusions and Relevance

This economic evaluation found that a sweetened beverage tax was associated with a reduction in soda intake among adolescents, providing evidence that such taxes can improve dietary behaviors.

Sugar-Sweetened Beverage Reduction Policies: Progress and Promise

Evidence showing the effectiveness of policies to reduce the consumption of sugar-sweetened beverages (SSBs) is growing. SSBs are one of the largest sources of added sugar in the diet and are linked to multiple adverse health conditions. This review presents a framework illustrating the various types of policies that have been used to reduce SSB exposure and consumption; policies are organized into four categories (financial, information, defaults, and availability) and take into consideration crosscutting policy considerations (feasibility, impact, and equity). Next, for each category, we describe a specific example and provide evidence of impact. Finally, we discuss crosscutting policy considerations, the challenge of choosing among the various policy options, and important areas for future research. Notably, no single policy will reduce SSB consumption to healthy levels, so an integrated policy approach that adapts to changing market and consumption trends; evolving social, political, and public health needs; and emerging science is critical.

Longer-term impacts of the Oakland, California, sugar-sweetened beverage tax on prices and volume sold at two-years post-tax

Sugar-sweetened beverage (SSB) consumption is associated with obesity and independently associated with type 2 diabetes and cardiovascular disease. Not only is obesity a growing public health problem, but it is also most recently associated with increased risk of severe illness from COVID-19. Taxes on SSBs are a policy tool used to help curb SSB consumption and are currently implemented in 7 U.S. cities and more than 40 countries. On July 1, 2017, Oakland, California, implemented a 1-cent/ounce tax on SSBs with ≥25 kilocalories/12 ounces. This study estimated the impact of the Oakland tax on prices, volume sold, and cross-border shopping two-years post-tax relative to one-year pre-tax. Universal product code-level Nielsen retail scanner data on non-alcoholic beverage sales were analyzed using a difference-in-differences design with Sacramento, California, as the comparison site. Taxed beverage prices increased by 0.67 cents/ounce, on average, in Oakland relative to Sacramento, corresponding to 67% pass-through. Taxed beverage volume sold decreased by 18% in Oakland relative to Sacramento, with a larger decrease for family-size beverages (23%) relative to individual-size beverages (8%). There was a 9% increase in volume sold of taxed beverages in the two-mile border area surrounding Oakland relative to the Sacramento border area, driven by a 12% increase for family-size taxed beverages. After accounting for this cross-border shopping, there was a net decrease of 6% in taxed beverage volume sold in Oakland. There was no significant change in untaxed beverage volume sold in either Oakland or its border area relative to their respective comparison sites, suggesting there was no substitution to untaxed beverages and cross-border shopping may have been limited to taxed beverages. This two-year post-tax study of the Oakland SSB tax adds to the limited number of longer-term evaluations of local U.S. SSB taxes.

Impact of a sugar-sweetened beverage tax two-year post-tax implementation in Seattle, Washington, United States

This study examines longer-run impacts of the Seattle, Washington, Sweetened Beverage Tax (SBT) on beverage prices, volume sold, and cross-border shopping. We use a difference-in-differences estimation approach, drawing on universal product code-level store scanner data on taxed and untaxed beverages one-year pre-tax and two-year post-tax with Portland, Oregon, as the comparison site. Two-year post-tax, prices of taxed beverages increased by 1.04 cents per ounce (59% tax pass-through rate). Volume sold of taxed beverages fell by 22%. Declines were larger for family-size (29%) compared to individual-size (10%) beverages; particularly for soda (36% decrease for family-size compared to no change for individual-size). We found no change in volume sold of taxed beverages in Seattle's 2-mile border area, suggesting no cross-border shopping. Overall, we found a sustained impact of the Seattle SBT two-year post-tax implementation suggesting that sugar-sweetened beverage taxes may yield permanent reductions in demand for sugary beverages and associated health harms.

Comment on Zhong et al. Sugar-Sweetened and Diet Beverage Consumption in Philadelphia One Year after the Beverage Tax. Int. J. Environ. Res. Public Health 2020, 17, 1336

In February 2020, the paper "Sugar-Sweetened and Diet Beverage Consumption in Philadelphia One Year after the Beverage Tax" was published in the International Journal of Environmental Research and Public Health [...].

Population-Level Approaches to Preventing Type 2 Diabetes Globally

Type 2 diabetes (T2DM) is increasingly considered an epidemic rooted in modern society as much as in individual behavior. Addressing the T2DM burden thus involves a dual approach, simultaneously addressing high-risk individuals and whole populations. Within this context, this article summarizes the evidence base, in terms of effectiveness and cost-effectiveness, for population-level approaches to prevent T2DM: (1) modifications to the food environment; (2) modifications to the built environment and physical activity; and (3) programs and policies to address social and economic factors. Existing knowledge gaps are also discussed.

Missed Opportunities: The Need to Promote Public Knowledge and Awareness of Sugar-Sweetened Beverage Taxes

Despite a growing body of evidence showing that sugar-sweetened beverage (SSB) taxes nudge consumers away from SSBs, we lack an understanding of people's awareness and perceptions of SSB taxes and whether tax awareness and perceptions differ based on sociodemographic characteristics. We used serial cross-sectional study intercept surveys (n = 2715) in demographically diverse neighborhoods of Berkeley and Oakland in 2015 and 2017, and San Francisco and Richmond in 2017. In the year following successful SSB tax ballot measures, 45% of respondents correctly recalled that an SSB tax had passed in their city. In untaxed cities, 14% of respondents incorrectly thought that a tax had passed. Perceived benefits of SSB taxes to the community and to children's health were moderate and, like correct recall of an SSB tax, were higher among respondents with higher education levels. Awareness of SSB taxes was low overall, and perceptions about taxes' benefits varied by educational attainment, reflecting a missed opportunity to educate citizens about how SSB taxes work and their importance. Public health efforts should invest in campaigns that explain the benefits of SSB taxes and provide information about how tax revenues will be invested, both before and after a tax proposal has passed.

Secular Trends in Sugar-Sweetened Beverage Consumption Among Adults, Teens, and Children: The California Health Interview Survey, 2011-2018

Consumption of sugar-sweetened beverages (SSBs) contributes to adverse health outcomes and excess health care spending. To provide context for ongoing work assessing the impact of public health strategies, including SSB excise taxes, we used data from the California Health Interview Survey from 2011–2018 to estimate trends in beverage consumption among adults, teens, and children overall and by education, race/ethnicity, and family income. We found reductions in the annual prevalence and frequency of soda consumption across all age groups and heterogeneous increases in the consumption of fruit drinks among adults and children. Surveillance of beverage consumption trends will continue to strengthen and improve the ability of researchers and policy makers to effectively improve population health.

The impact of the Philadelphia beverage tax on employment: A synthetic control analysis

Prevalence of obesity and other diet-related non-communicable diseases (NCDs) have continued to rise for decades in the United States. In addition to adverse health consequences, these diseases have led to substantial economic costs in the form of medical expenses and productivity losses. To address the rise in NCDs, excise taxes on sugar-sweetened beverages (SSBs) are increasingly proposed and implemented as a policy tool for improving dietary intake and population health. To date, few empirical studies have evaluated the potential unintended economic effects of these taxes. In this paper, we examine the impact of the Philadelphia, PA, sweetened beverage tax (applied to both SSBs and artificially sweetened beverages) on employment in key industries that sell sweetened beverages as well as on net total employment. Drawing on monthly employment count data from the Bureau of Labor Statistics from January 2012 through June 2019, we conducted a synthetic control analysis of total, private sector, limited-service restaurant, and convenience store employment. The synthetic controls reproduced nearly identical pre-tax employment trends to Philadelphia and had similar values of important predictors. In the post-tax period, Philadelphia employment was not lower, on average, than the synthetic control employment for each outcome. Placebo tests suggested a null effect of the tax, and the results were robust to changes in predictors and control site criteria. Overall, we did not find that the sweetened beverage tax resulted in job losses up to two and a half years after the tax was implemented. These findings are consistent with other peer-reviewed modeling and empirical papers on the employment and unemployment effects of sweetened beverage taxes.

One-year changes in sugar-sweetened beverage consumers' purchases following implementation of a beverage tax: a longitudinal quasi-experiment

BACKGROUND

Few longitudinal studies examine the response to beverage taxes, especially among regular sugar-sweetened beverage (SSB) consumers.

OBJECTIVE

This study aimed to examine changes in objectively measured beverage purchases associated with the Philadelphia beverage tax on sugar-sweetened and artificially sweetened beverages.

METHODS

A longitudinal quasi-experiment was conducted with adult sugar-sweetened beverage (SSB) consumers in Philadelphia (n = 306) and Baltimore (n = 297; a nontaxed comparison city). From 2016 to 2017 participants submitted all food and beverage receipts during a 2-wk period at: baseline (pretax) and 3, 6, and 12 mo posttax (91.0% retention; data analyzed in 2019). Linear mixed effects models were used to assess the difference-in-differences in total purchased ounces (fl oz) of taxed beverages in a 2-wk period in Philadelphia compared with Baltimore. Secondary analyses: 1) excluded weeks that contained major holidays at baseline and 12 mo (42% of measured weeks at baseline and 12 mo) because policy implementation timing necessitated data collection during holidays when SSB demand may be more inelastic, and 2) aggregated posttax time points to address serial correlation and low power.

RESULTS

There were no statistically significant changes in purchased ounces of taxed beverages in Philadelphia compared with Baltimore in the primary analysis. After excluding holiday purchasing, the tax was associated with statistically significant reductions of taxed beverage purchases at 3 and 6 mo (-157.1 ounces, 95% CI: -310.1, -4.1 and -175.1 ounces, 95% CI: -328.0, -22.3, respectively) but not 12 mo. Analyses aggregating all 6 wk of posttax time points showed statistically significant reductions (-203.7 ounces, 95% CI: -399.6, -7.8).

CONCLUSIONS

A sweetened beverage tax was not associated with reduced taxed beverage purchases among SSB consumers 12 mo posttax in the full sample. Both secondary analyses excluding holiday purchasing or aggregating posttax time periods found reductions in taxed beverage purchases ranging from -4.9 to -12.5 ounces per day. Larger longitudinal studies are needed to further understand tax effects.