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Will Masters

@willmasters.bsky.social
3.4K followers 1K following 261 posts

Prof. at the Friedman School of Nutrition & Dept. of Economics at Tufts University @tuftsnutrition.bsky.social. Open-access book on Food Economics: Agriculture, Nutrition and Health. sites.tufts.edu/willmasters

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Will Masters @willmasters.bsky.social · 07/09/2026
For your own kitchen and table salt, especially if you're a potential mom or responsible for feeding infants remember that the ordinary cheap iodized stuff really is healthier than more expensive culinary salts: www.foodandwine.com/what-happene...
foodandwine.com
Iodized Salt Was Once a Public Health Miracle — So Why Did We Stop Using It?
Once a staple of American kitchens, iodized salt virtually eliminated iodine deficiency in the U.S. Now, as home cooks embrace kosher salt and other specialty varieties, nutrition experts say the long...
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Will Masters @willmasters.bsky.social · 07/09/2026
One key message of Robel Alemu's great paper is that iodized salt remains a miracle of 20th century science. In this high-tech 21st century we shouldn't take it for granted. Even in the U.S., symptoms of extreme iodine deficiency are coming back: www.brown.edu/news/2025-09...
brown.edu
Not getting enough iodine? Brown pediatric endocrinologist reveals why iodine deficiency is on the rise
Dr. Monica Serrano-Gonzalez of the Warren Alpert Medical School discussed her research on the risks of iodine deficiency and what people can do about it.
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Will Masters @willmasters.bsky.social · 07/09/2026
Back in June 2007, my family and I did some tourism across Ethiopia. Visiting Bahir Dar market, I took this photo of a vendor selling the traditional bars and also loose grains of non-iodized salt. I had no idea that we would later be able to measure its harmful effects.
Vendor selling traditional, non-iodized salt at Bahir Dar market in June 2007
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Will Masters @willmasters.bsky.social · 07/09/2026
Iodized salt is a great achievement, easily lost: Adoption in Ethiopia was paused in the late 1990s, permanently harming those born at that time especially in districts with low environmental iodine. Great work from @robel-alemu.bsky.social in @natfood.nature.com, from @tuftsnutrition.bsky.social
nature.com
Loss of salt iodization harmed child survival and academic achievement in Ethiopia - Nature Food
This study examines the effects of early-life iodine deficiency on health and educational outcomes following the war-induced disruption of Ethiopia’s salt iodization programme in the late 1990s. Using...
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Will Masters @willmasters.bsky.social · 15/07/2026
Farms can be beautiful sites that connect us to nature & history & culture, so we want some farms preserved near cities... but keeping high-value land in low-output farms is for agrotourism rather than sustainability, equity or health, so their area should be small. open.substack.com/pub/matthewy...
open.substack.com
Farms aren’t nature
A banal take with serious consequences
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Will Masters @willmasters.bsky.social · 13/05/2026
...and to see inside, here is Spotify's automated summary of topics:
Screenshot of podcast contents
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Will Masters @willmasters.bsky.social · 13/05/2026
This deep-dive conversation with David Introcaso covers all the big questions in #FoodEconomics. It's just what you need: an unedited 40 minutes on agriculture, food and health... starting with an intro to my wonderful Friedman School of Nutrition at Tufts @tuftsnutrition.bsky.social
open.spotify.com
Tufts Professor William Masters Discusses Food Affordability and Food Production Stability in the Age of Climate Denial
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ANH Academy Science-Policy Platform @anhacademy.bsky.social · 12/05/2026
📢 Rome Nutrition Week 2026 is almost here! #RNW26 Taking place 25–28 May in Rome and online, Day 1 opens with a session on the Cost of a Healthy Diet, a metric with IMMANA roots now used by FAO, WFP and the World Bank globally. 🥗 Free to register 🔗 www.unnutrition.org/rome-nutriti...
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Will Masters @willmasters.bsky.social · 01/05/2026
...and for academics, here is Ambolley's song Teacher, recorded with the same band on his U.S. tour last year: www.youtube.com/watch?v=KFFm...
youtube.com
Gyedu-Blay Ambolley - Teacher (Live on KEXP)
YouTube video by KEXP
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Will Masters @willmasters.bsky.social · 01/05/2026
In Accra, celebrating the successful launch of the ANH Africa Regional Collaborative from @anhacademy.bsky.social, I was fortunate to catch the great Gyedu-Blay Ambolley at +233 Jazz. Here is his magnificent take on John Coltrane's A Love Supreme: www.youtube.com/watch?v=xP1k.... Wow.
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ANH Academy Science-Policy Platform @anhacademy.bsky.social · 31/03/2026
📣 Applications open for Round 2 of the ANH Academy Competitive Research Grants! Funding impact & cost-effectiveness evaluations to support equitable consumption of safe, affordable, nutritious foods 🍏🌱🌍 Apply by 1 May 2026 → www.anh-academy.org/workstreams/...
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Will Masters @willmasters.bsky.social · 03/04/2026
Oops that's Erroll Schweizer, no t.
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Will Masters @willmasters.bsky.social · 03/04/2026
Condolences to Erroll Schweitzer -- and big thanks to him for this thoughtful assessment of NYC's plan to improve food access through five city-owned grocery stores:
open.substack.com
Grocery Update #147: Three Ways New York’s Public Grocery Experiment Could Fail.
The Mamdani Administration’s Pilot Faces Structural Dangers That Have Nothing To Do With Whether Public Groceries Are A Good Idea.
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Will Masters @willmasters.bsky.social · 07/03/2026
The American singer-songwriter tradition at its best: here's my stepdad at the iconic Dan & Whit's general store in Norwich, VT
substack.com
PHIL BUSH 6 songs
Recorded by Chad Finer Upstairs at Dan &Whit's Feb 15, 2026
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Will Masters @willmasters.bsky.social · 21/02/2026
Thank you to Ed Mabaya for hosting this talk on Food Prices for Nutrition -- my best effort at showing how and why the FAO, World Bank and national governments are measuring access to healthy diets in a new way, featuring links between @cornelluniversity.bsky.social & @tuftsnutrition.bsky.social.
youtube.com
Cost and affordability of healthy diets: Adoption and use of a new food security metric worldwide
YouTube video by Cornell Global Development
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Will Masters @willmasters.bsky.social · 03/02/2026
Thank you Ben! ...and anyone can play with our classroom exercise mentioned in the first sentence of the Boston Globe / STAT article, recently published in Journal of Economic Education:
sites.tufts.edu
Least-cost diet exercise for nutrient adequacy – Food Economics
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Ben Chrisinger @bchrisinger.bsky.social · 03/02/2026
Great analysis and resource on food prices resource from @willmasters.bsky.social @tuftsnutrition.bsky.social. As with many things MAHA, a mixed bag. Via @sarah-todd.bsky.social @statnews.com
statnews.com
MAHA says its new food pyramid is affordable and healthy. We asked experts
How affordable are the new dietary guidelines? Economists and nutrition experts weigh in.
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Tamar Haspel @tamarhaspel.bsky.social · 29/01/2026
Heartiest of congratulations to @willmasters.bsky.social, whose work on food & ag I value very much.
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Friedman School of Nutrition Science and Policy @tuftsnutrition.bsky.social · 28/01/2026
William A. Masters has been awarded the 2026 Georg and Greta Borgström Prize for Global Food Security 🏆 His work brings economics, agriculture, and nutrition together to make healthy diets more affordable worldwide. 🔗 Read more: bit.ly/4jWQpre
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Will Masters @willmasters.bsky.social · 30/01/2026
Thank you Tamar -- and likewise!
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Parke Wilde @parkewilde.bsky.social · 10/12/2025
Yan Bai, Elena Martinez, Anna Herforth, @willmasters.bsky.social (at @tuftsnutrition.bsky.social) and others have an insightful article with information-dense graphics in Nature Food this week, comparing low-cost to climate-friendly food options internationally. www.nature.com/articles/s43...
nature.com
Environmental impacts and monetary costs of healthy diets worldwide - Nature Food
Identifying low-cost options for a healthy diet is an essential step towards allowing all people to meet their nutritional needs. This study measures the frontiers of the lowest available cost and gre...
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Parke Wilde @parkewilde.bsky.social · 03/12/2025
The nicely annotated recording of the webinar on Nov 20 with Prof. Norbert Wilson of Duke University @dukewfpc.bsky.social, about the recent end of the USDA nationally representative household food security survey, now has been posted. wfpc.sanford.duke.edu/webinar-what...
wfpc.sanford.duke.edu
Webinar: What We Lose as USDA Household Food Security Reporting Ends - World Food Policy Center
Overview On November, 20, 2025, Duke’s World Food Policy Center hosted an in-depth webinar on a major policy shift by the US Department of Agriculture:…
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Will Masters @willmasters.bsky.social · 03/12/2025
Sure but be careful what you wish for -- the ends may not justify the means
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Will Masters @willmasters.bsky.social · 03/12/2025
...and here's another angle on how cruise ship companies have overcome the constraints of life on shore
worksinprogress.co
Progress unmoored - Works in Progress Magazine
Airports and cities may face delays and rising costs, but cruise ships keep breaking records. They show what can still be built.
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Will Masters @willmasters.bsky.social · 03/12/2025
Want to see a circular bioeconomy, with minimal food waste and max energy recycling? I learned a lot from this amazing story about ruthless efficiency in pursuit of customer service:
economist.com
Mise en masse
How do you prepare 100,000 meals at sea?
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Parke Wilde @parkewilde.bsky.social · 31/10/2025
My colleague @willmasters.bsky.social and I had a nice conversation with Norbert Wilson at @dukewfpc.bsky.social about least cost diets in the United States and internationally, with implications for understanding SNAP in the US and world hunger. wfpc.sanford.duke.edu/podcasts/how...
wfpc.sanford.duke.edu
E286: How 'least cost diet' models fuel food security policy - World Food Policy Center
Governments use something called a ‘least cost diet’ to monitor food access, inform policy discussions, and target interventions to improve food security and nutrition. So, what is the least cost diet...
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Will Masters @willmasters.bsky.social · 15/10/2025
Thanks to Pablo Rosado of @ourworldindata.org for a clear, vivid explanation of what #FoodPricesForNutrition metrics reveal about healthy diet costs and affordability. The original data are posted at www.fao.org/faostat/en/#... & worldbank.org/foodpricesfo..., from sites.tufts.edu/foodpricesfo...
ourworldindata.org
Almost three billion people cannot afford a healthy diet
A healthy, nutritious diet is much more expensive than a calorie sufficient one.
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Will Masters @willmasters.bsky.social · 05/10/2025
Yes that's true - but veg intake is poorly measured, and when prices change there's a lot of substitution among items of different quality. For diet recall, Dary's analysis of NHANES data has time trends to 2020, and the USDA loss-adjusted data is even more granular www.ers.usda.gov/data-product...
doi.org
Trends in Diet Quality Among U.S. Adults From 1999 to 2020 by Race, Ethnicity, and Socioeconomic Disadvantage | Annals of Internal Medicine
Background: Few data have assessed trends in diet quality among U.S. adults. Objective: To evaluate trends in diet quality by race, ethnicity, and socioeconomic disadvantage. Design: Repeated cross-se...
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Will Masters @willmasters.bsky.social · 05/10/2025
Having low price, high quality tomatoes depends not only on imports in winter, but also immigrant labor, new technology and market competition. It's the tomato theory of everything! Thx to @camilo-fonseca.bsky.social for clear reporting on how tariffs limit our access to imported sunshine. 3/3
bostonglobe.com
Winter is coming. So are tariff-induced price hikes on tomatoes and other produce. - The Boston Globe
A rise in produce prices could be a sign of higher costs to come as President Trump’s tariffs on imported food become more significant.
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Will Masters @willmasters.bsky.social · 05/10/2025
For a decade Americans have benefited from a downward trend in the real cost of tomatoes (in red), even more than all fruits & veg (in green), compared to all groceries (in black). Each is shown controlling for overall inflation, from FRED with updates here: fred.stlouisfed.org/graph/?g=1MNZ7 2/3
fred.stlouisfed.org
FRED Graph
FRED Graph
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Will Masters @willmasters.bsky.social · 05/10/2025
The tomato theory of everything 1/3
bostonglobe.com
Winter is coming. So are tariff-induced price hikes on tomatoes and other produce. - The Boston Globe
A rise in produce prices could be a sign of higher costs to come as President Trump’s tariffs on imported food become more significant.
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Will Masters @willmasters.bsky.social · 05/10/2025
Just finished the superb new book from @juliabelluz.bsky.social and @kevinh-phd.bsky.social. Crystal clear storytelling about the new science of nutrition, summarizing what we learn at top schools like @tuftsnutrition.bsky.social. It's a timely antidote to snake oil & vibes--highly recommended!
penguinrandomhouse.com
Food Intelligence by Julia Belluz, Kevin Hall, PhD: 9780593332306 | PenguinRandomHouse.com: Books
“Food Intelligence dispels many popular myths we have about weight loss and breaks down the real drivers of the obesity crisis based on decades of research. I really hope everyone gets a chance to...
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Will Masters @willmasters.bsky.social · 21/09/2025
The U.S. food security data to be cancelled by Trump's USDA has been of huge value but is often misunderstood -- and the WSJ piece breaking the news is exceptionally clear about what's at stake
wsj.com
Exclusive | Trump Administration Cancels Annual Hunger Survey
The government has been measuring food insecurity since the mid-1990s but now says the report has become “overly politicized.”
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Will Masters @willmasters.bsky.social · 31/08/2025
PS, academic footnote for those interested in the use (and misuse) of Google trends data, a nice article from @floriankeusch.bsky.social and coauthors here:
sciencedirect.com
The (mis)use of Google Trends data in the social sciences - A systematic review, critique, and recommendations
Researchers increasingly use aggregated search data from Google Trends to study a wide range of phenomena. Although this new data source possesses som…
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Will Masters @willmasters.bsky.social · 31/08/2025
The rise and fall of progressive idealism, as tracked by online search for vegan (vs. organic or vegetarian). These data are global, you can click to see differences in timing and relative magnitudes here: trends.google.com/trends/explo... I'll call this the "Henry Vance Index" of idealism. 2/2
Chart of Google trends data on the rise and fall of online searches for "vegan" in contrast to "organic" and "vegetarian"
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Will Masters @willmasters.bsky.social · 31/08/2025
Great piece from @henrymance.ft.com on a surprising way in which people have turned away from idealism: fewer online searches for "vegan". Data in the next post... 1/2
on.ft.com
Why the vegans lost
Veganism didn’t become less good for us or the planet, so what changed?
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Will Masters @willmasters.bsky.social · 23/08/2025
Big new paper shows limits to the common belief that healthy & sustainable foods are more expensive than other options. Details: linkedin.com/posts/wamast... Article: doi.org/10.1016/j.aj... Preprint: sites.tufts.edu/foodpricesfo... From @tuftsnutrition.bsky.social, for #foodsky #econsky #foodecon
Screenshot of AJCN articleSlide of data showing higher CO2-equivalent emissions from more expensive options within major food groups Slide of data showing varied or no correlation between retail price and nutritional profile score of widely sold items within major food groups
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Will Masters @willmasters.bsky.social · 20/08/2025
It looks like healthy adults under 65 in the U.S. might be barred from getting the updated Covid vaccine for this fall. Here's the latest from my niece Nina Masters' Know Your Vax substack, in response to the story below from Caitlin Rivers @cmyeaton.bsky.social
knowyourvax.com
Now It’s Personal: Changes to Vaccine Policy Affect All of Us
I had a painful experience at my local CVS this morning. I went in to get my flu shot and saw a pregnant woman standing at the pharmacy counter. She asked for last year’s formulation of the COVID-1…
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Will Masters @willmasters.bsky.social · 20/08/2025
Marion Nestle just posted a useful roundup of links about the leaked draft MAHA report here: www.foodpolitics.com/2025/08/http... So far MAHA is playing out somewhat like Italy's right-wing gastronationalism, which distracts food activists with symbolic stuff so as to give industry gets a free hand.
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Parke Wilde @parkewilde.bsky.social · 18/08/2025
Sailing on Boston Harbor on a breezy summer afternoon with @willmasters.bsky.social, practicing dropping and raising the anchor, and, for conversation, in our imagination, solving global food systems challenges.
Selfie with two men on a sailboat on Boston Harbor, with the Boston skyline in the background.
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Parke Wilde @parkewilde.bsky.social · 16/08/2025
As ABC News @max-zahn.bsky.social reports, producer prices for vegetables jumped nearly 40% in one month. Tariffs? Supply hiccups due to immigration crackdown on farm laborers? Weather? Or random noise? Let's monitor vegetable prices in the next two months to see. abcnews.go.com/Business/tar...
abcnews.go.com
Are tariffs to blame for nearly 40% spike in wholesale vegetable prices? Experts weigh in
The wholesale-price spike may eventually hike prices for shoppers, experts said.
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Richard Waite @waiterich.bsky.social · 16/08/2025
Remember all of the “food prices are too high” social media posts from 2024? Grocery price inflation is higher now than it was then
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David L. Ortega @dlortega.bsky.social · 15/08/2025
Wholesale prices came in hot in today’s PPI report, but veggies stole the show 🥦📈 Vegetable prices at the wholesale level surged nearly 39% in July. @willmasters.bsky.social & I unpack what’s behind this spike in today's @marketplace.org 🎙️ www.marketplace.org/story/2025/0...
marketplace.org
Why are wholesale vegetable prices spiking, and what's that mean for consumers?
About a quarter of the 3.3% price increase recorded by this month’s producer price index was driven by a spike in wholesale prices for veggies.
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Will Masters @willmasters.bsky.social · 13/08/2025
Yes indeed, and this page explains how to get the password: sites.tufts.edu/foodeconomic.... Should be quick and helpful to join the elist, and passwords should protect the files from appearing in search and AI training content.
sites.tufts.edu
Teaching materials – Food Economics
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Will Masters @willmasters.bsky.social · 13/08/2025
For university courses about #FoodEconomics, a full set of class slides, weekly exercises, & exams is now available for use with the free online textbook from @afinaret.bsky.social and me. Audience is advanced undergrads and first-year grad students using graphical diagrams, examples and global data
sites.tufts.edu
Teaching resources – Food Economics
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Will Masters @willmasters.bsky.social · 12/08/2025
Today's U.S. CPI shows grocery price inflation rising and above 2% year-on-year since March 2025, after the period of low grocery price rises in 2023-24. This FRED chart shows rise in grocery inflation (green) vs restaurant meals (red) and the overall CPI (blue): fred.stlouisfed.org/graph/?g=1LgBF
fred.stlouisfed.org
FRED Graph
FRED Graph
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Will Masters @willmasters.bsky.social · 29/07/2025
This year's #AAEA2025 coincides with launch of the UN system's #SOFI2025 report on The State of Food Security and Nutrition in the World. Beyond diet costs and affordability, this year's report includes new work from @tuftsnutrition.bsky.social and @fao.org on relative cost of different foods:
openknowledge.fao.org
3.4 Price inflation of nutrient-dense foods relative to other foods: Are there differences?
This report documents how high food price inflation is associated with increases in food insecurity and child malnutrition.
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Will Masters @willmasters.bsky.social · 29/07/2025
Yesterday's launch of #SOFI2025 marks the 4th annual update of global diet cost and affordability data published jointly by FAO and the World Bank, used by UN agencies and national governments as a clear and actionable new metric of global food security. Direct link to the report is here:
openknowledge.fao.org
2.2 Cost and affordability of a healthy diet
This report documents how high food price inflation is associated with increases in food insecurity and child malnutrition.
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Will Masters @willmasters.bsky.social · 26/07/2025
Big thanks to #ABCDE2025 for an amazing 4 days blending new research with big-picture debate on global development in this era of political change. Here's their video of my 15-min summary of #FoodPricesForNutrition, on whether & how agriculture can meet health needs: www.youtube.com/live/AEV4YE1...
Screenshot of the World Bank's Preston Auditorium for the Annual Bank Conference on Development Economics, July 25th 2025
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David Evans @daveevansphd.bsky.social · 25/07/2025
Will Masters of Tufts University shows how a well-crafted indicator (in this case, the lowest cost of a healthy diet) can actively inform civil society discussion. For more, read his paper www.sciencedirect.com/science/arti... #ABCDE2025
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