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The Leading Voices in Food

The Leading Voices in Food

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 The Leading Voices in Food podcast series features real people, scientists, farmers, policy experts and world leaders all working to improve our food system and food policy. You'll learn about issues across the food system spectrum such as food insecurity, obesity, agriculture, access and equity, food safety, food defense, and food policy. Produced by the Duke World Food Policy Center at wfpc.sanford.duke.edu.Duke World Food Policy Center Ciências Ciências Sociais Higiene e Vida Saudável
Episódios
  • Posting calorie counts on menus should be just one strategy of many

    Posting calorie counts on menus should be just one strategy of many
    Dec 16 2025
    In this episode of the Leading Voices in Food podcast, Norbert Wilson of Duke University's Sanford School of Public Policy speaks with researchers Jean Adams from the University of Cambridge and Mike Essman from Duke's World Food Policy Center. They discuss the mandatory calorie labeling policy introduced in England in April 2022 for large food-away-from-home outlets. The conversation covers the study recently published in the British Medical Journal, exploring its results, strengths, limitations, and implications within the broader context of food labeling and public health policies. Key findings include a slight overall reduction in calorie content offered by food outlets, driven by the removal of higher-calorie items rather than reformulation. The discussion also touches on the potential impacts on different consumer groups, the challenges of policy enforcement, and how such policies could be improved to more effectively support public health goals. Interview Summary Now everyone knows eating out is just part of life. For many, it's a place to make connections, can be a guilty pleasure, and sometimes it's just an outright necessity for busy folks. But it is also linked to poor dietary quality, weight gain, and even obesity. For policymakers, the challenge is identifying what policy changes can help improve population health. Jean, let's begin with you. Can you tell our listeners about the UK's menu labeling intervention and what change did you hope to see? Jean - Yes, so this was a policy that was actually a really long time in coming and came in and out of favor with a number of different governments. So maybe over the last 10 years we've had various different suggestions to have voluntary and/or mandatory calorie labeling in the out-of-home sector. Eventually in April, 2022, we did have new mandatory regulations that came into a force that required large businesses just in England - so not across the whole of the UK, just in England - if they sold food and non-alcoholic drinks and they had to display the calories per portion of every item that they were selling. And then have alongside that somewhere on their menu, a statement that said that adults need around 2000 calories per day. The policy applied just to large businesses, and the definition of that was that those businesses have 250 or more employees, but the employees didn't all have to be involved in serving food and drinks. This might apply also to a large hotel chain who just have some bars or something in their hotels. And the food and drinks covered were things that were available for immediate consumption. Not prepackaged. And then there was also this proviso to allow high-end restaurants to be changing their menus regularly. So, it was only for things that were on the menu for at least 30 days. You mentioned that this policy or a menu labeling might have at least two potential modes of impacts. There's first this idea that providing calories or any sort of labeling on food can somehow provide information for consumers to make what we might hope would be better choices. Might help them choose lower calorie options or healthier options. And then the second potential impact is that businesses might also use the information to change what sort of foods they're serving. It might be that they didn't realize how many calories were in the foods and they're suddenly embarrassed about it. Or as soon as their customers realize, they start to put a little bit of pressure on, you know, we want something a little bit lower calorie. So, there's this potential mechanism that operates at the demand side of how consumers might make choices. And another one at the supply side of what might be available to consumers. And we knew from previous evaluations of these sorts of interventions that there was some evidence that both could occur. Generally, it seems to be that findings from other places and countries are maybe null to small. So, we were thinking that maybe we might see something similar in England. Thank you for sharing that background. I do have a question about the length of time it took to get this menu labeling law in place. Before we get into the results, do you have a sense of why did it take so long? Was it industry pushback? Was it just change of governments? Do you have a sense of that? Jean - Yes, so I think it's probably a bit of both. To begin with, it was first proposed as a voluntary measure actually by industry. So, we had this kind of big public-private partnership. What can industry do to support health? And that was one of the things they proposed. And then they didn't really do it very well. So, there was this idea that everybody would do it. And in fact, we found maybe only about 20% of outlets did it. And then definitely we have had government churn in the UK over the last five years or so. So, every new prime minister really came in and wanted to have their own obesity policy threw out the last one started over. And every ...
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    34 minutos
  • E287: Food policy insights from government agency insider Jerold Mande

    E287: Food policy insights from government agency insider Jerold Mande
    Nov 25 2025
    In this episode, Kelly Brownell speaks with Jerold Mande, CEO of Nourish Science, adjunct professor at the Harvard School of Public Health, and former Deputy Undersecretary for Food Safety at the USDA. They discuss the alarming state of children's health in America, the challenges of combating poor nutrition, and the influence of the food industry on public policy. The conversation explores the parallels between the tobacco and food industries and proposes new strategies for ensuring children reach adulthood in good health. Mande emphasizes the need for radical changes in food policy and the role of public health in making these changes. Transcript So, you co-founded this organization along with Jerome Adams, Bill Frist and Thomas Grumbly, as we said, to ensure every child breaches age 18 at a healthy weight and in good metabolic health. That's a pretty tall order given the state of the health of youth today in America. But let's start by you telling us what inspired this mission and what does it look like to achieve this in today's food environment? I was trained in public health and also in nutrition and in my career, which has been largely in service of the public and government, I've been trying to advance those issues. And unfortunately over the arc of my career from when I started to now, particularly in nutrition and public health, it's just gotten so much worse. Indeed today Americans have the shortest lifespans by far. We're not just last among the wealthy countries, but we're a standard deviation last. But probably most alarming of all is how sick our children are. Children should not have a chronic disease. Yet in America maybe a third do. I did some work on tobacco at one point, at FDA. That was an enormous success. It was the leading cause of death. Children smoked at a higher rate, much like child chronic disease today. About a third of kids smoked. And we took that issue on, and today it's less than 2%. And so that shows that government can solve these problems. And since we did our tobacco work in the early '90s, I've changed my focus to nutrition and public health and trying to fix that. But we've still made so little progress. Give us a sense of how far from that goal we are. So, if the goal is to make every child reaching 18 at a healthy weight and in good metabolic health, what percentage of children reaching age 18 today might look like that? It's probably around a half or more, but we're not quite sure. We don't have good statistics. One of the challenges we face in nutrition is, unfortunately, the food industry or other industries lobby against funding research and data collection. And so, we're handicapped in that way. But we do know from the studies that CDC and others have done that about 20% of our children have obesity about a similar number have Type 2 diabetes or the precursors, pre-diabetes. You and I started off calling it adult-onset diabetes and they had to change that name to a Type 2 because it's becoming so common in kids. And then another disease, fatty liver disease, really unthinkable in kids. Something that the typical pediatrician would just never see. And yet in the last decade, children are the fastest growing group. I think we don't know an exact number, but today, at least a third, maybe as many as half of our children have a chronic disease. Particularly a food cause chronic disease, or the precursors that show they're on the way. I remember probably going back about 20 years, people started saying that we were seeing the first generation of American children that would lead shorter lives than our parents did. And what a terrible legacy to leave our children. Absolutely. And that's why we set that overarching goal of ensuring every child reaches age 18 in good metabolic health. And the reason we set that is in my experience in government, there's a phrase we all use - what gets measured gets done. And when I worked at FDA, when I worked at USDA, what caught my attention is that there is a mission statement. There's a goal of what we're trying to achieve. And it's ensuring access to healthy options and information, like a food label. Now the problem with that, first of all, it's failed. But the problem with that is the bureaucrats that I oversaw would go into a supermarket, see a produce section, a protein section, the food labels, which I worked on, and say we've done our job. They would check those boxes and say, we've done it. And yet we haven't. And if we ensured that every child reaches age 18 at a healthy weight and good metabolic health, if the bureaucrats say how are we doing on that? They would have to conclude we're failing, and they'd have to try something else. And that's what we need to do. We need to try radically different, new strategies because what we've been doing for decades has failed. You mentioned the food industry a moment ago. Let's talk about that in a little more detail. You made the argument that food companies have substituted ...
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    33 minutos
  • E286: How 'least cost diet' models fuel food security policy

    E286: How 'least cost diet' models fuel food security policy
    Nov 4 2025
    In this episode of the Leading Voices in Food podcast, host Norbert Wilson is joined by food and nutrition policy economists Will Masters and Parke Wilde from Tufts University's Friedman School of Nutrition, Science and Policy. The discussion centers around the concept of the least cost diet, a tool used to determine the minimum cost required to maintain a nutritionally adequate diet. The conversation delves into the global computational methods and policies related to least cost diets, the challenges of making these diets culturally relevant, and the implications for food policy in both the US and internationally. You will also hear about the lived experiences of people affected by these diets and the need for more comprehensive research to better reflect reality. Interview Summary I know you both have been working in this space around least cost diets for a while. So, let's really start off by just asking a question about what brought you into this work as researchers. Why study least cost diets? Will, let's start with you. I'm a very curious person and this was a puzzle. So, you know, people want health. They want healthy food. Of course, we spend a lot on healthcare and health services, but do seek health in our food. As a child growing up, you know, companies were marketing food as a source of health. And people who had more money would spend more for premium items that were seen as healthy. And in the 2010s for the first time, we had these quantified definitions of what a healthy diet was as we went from 'nutrients' to 'food groups,' from the original dietary guidelines pyramid to the MyPlate. And then internationally, the very first quantified definitions of healthful diets that would work anywhere in the world. And I was like, oh, wow. Is it actually expensive to eat a healthy diet? And how much does it cost? How does it differ by place location? How does it differ over time, seasons, and years? And I just thought it was a fascinating question. Great, thank you for that. Parke? There's a lot of policy importance on this, but part of the fun also of this particular topic is more than almost any that we work on, it's connected to things that we have to think about in our daily lives. So, as you're preparing and purchasing food for your family and you want it to be a healthy. And you want it to still be, you know, tasty enough to satisfy the kids. And it can't take too long because it has to fit into a busy life. So, this one does feel like it's got a personal connection. Thank you both for that. One of the things I heard is there was an availability of data. There was an opportunity that seems like it didn't exist before. Can you speak a little bit about that? Especially Will because you mentioned that point. Will: Yes. So, we have had food composition data identifying for typical items. A can of beans, or even a pizza. You know, what is the expected, on average quantity of each nutrient. But only recently have we had those on a very large scale for global items. Hundreds and hundreds of thousands of distinct items. And we had nutrient requirements, but only nutrient by nutrient, and the definition of a food group where you would want not only the nutrients, but also the phytochemicals, the attributes of food from its food matrix that make a vegetable different from just in a vitamin pill. And those came about in, as I mentioned, in the 2010s. And then there's the computational tools and the price observations that get captured. They've been written down on pads of paper, literally, and brought to a headquarters to compute inflation since the 1930s. But access to those in digitized form, only really in the 2000s and only really in the 2010s were we able to have program routines that would download millions and millions of price observations, match them to food composition data, match that food composition information to a healthy diet criterion, and then compute these least cost diets. Now we've computed millions and millions of these thanks to modern computing and all of that data. Great, Will. And you've already started on this, so let's continue on this point. You were talking about some of the computational methods and data that were available globally. Can you give us a good sense of what does a lease cost diet look like from this global perspective because we're going to talk to Parke about whether it is in the US. But let's talk about it in the broad sense globally. In my case the funding opportunity to pay for the graduate students and collaborators internationally came from the Gates Foundation and the UK International Development Agency, initially for a pilot study in Ghana and Tanzania. And then we were able to get more money to scale that up to Africa and South Asia, and then globally through a project called Food Prices for Nutrition. And what we found, first of all, is that to get agreement on what a healthy diet means, we needed to go to something like the least common denominator....
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    33 minutos
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