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Will Masters @willmasters.bsky.social · 3d

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...

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...

doi.org

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Will Masters @willmasters.bsky.social · 3d

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.

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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.

www.bostonglobe.com

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Will Masters @willmasters.bsky.social · 3d

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
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FRED Graph

fred.stlouisfed.org

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Will Masters @willmasters.bsky.social · 3d

The tomato theory of everything

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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.

www.bostonglobe.com

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Will Masters @willmasters.bsky.social · 3d

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!

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...

www.penguinrandomhouse.com

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Will Masters @willmasters.bsky.social · 17d

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

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.”

www.wsj.com

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Will Masters @willmasters.bsky.social · Aug 31

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:

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…

www.sciencedirect.com

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Will Masters @willmasters.bsky.social · Aug 31

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.

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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 · Aug 31

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...
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Why the vegans lost

Veganism didn’t become less good for us or the planet, so what changed?

on.ft.com

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Will Masters @willmasters.bsky.social · Aug 23

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

Slide of data showing higher CO2-equivalent emissions from more expensive options within major food groups

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Will Masters @willmasters.bsky.social · Aug 20

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

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Will Masters @willmasters.bsky.social · Aug 20

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.

Will Masters @willmasters.bsky.social · Feb 22

My guess is that MAHA will follow the food policy playbook of Italy's right wing, whose defense of tradition is used to stop rules against harmful new foods. In the U.S. we'll be distracted by fights over raw milk & beef tallow, while the real story is rules on sugar & salt.

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PS, about Italy:

The Mediterranean diet is a lie

Italy’s food is supposed to be the world’s healthiest. So why are so many of its kids obese?

www.politico.eu

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Reposted by Will Masters

Parke Wilde @parkewilde.bsky.social · Aug 18

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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Reposted by Will Masters

Parke Wilde @parkewilde.bsky.social · Aug 16

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...

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.

abcnews.go.com

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Reposted by Will Masters

Richard Waite @waiterich.bsky.social · Aug 16

Remember all of the “food prices are too high” social media posts from 2024?

Grocery price inflation is higher now than it was then

Will Masters @willmasters.bsky.social · Aug 12

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 Graph

fred.stlouisfed.org

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Reposted by Will Masters

David L. Ortega @dlortega.bsky.social · Aug 15

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...

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.

www.marketplace.org

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Will Masters @willmasters.bsky.social · Aug 13

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.

Teaching materials – Food Economics

sites.tufts.edu

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Will Masters @willmasters.bsky.social · Aug 13

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

Teaching resources – Food Economics

sites.tufts.edu

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Will Masters @willmasters.bsky.social · Aug 12

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 Graph

fred.stlouisfed.org

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Will Masters @willmasters.bsky.social · Jul 29

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:

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.

openknowledge.fao.org

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Will Masters @willmasters.bsky.social · Jul 29

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:

Will Masters @willmasters.bsky.social · Jul 26

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

Reposted by Will Masters

David Evans @daveevansphd.bsky.social · Jul 25

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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Will Masters @willmasters.bsky.social · Jul 24

Great storytelling about agricultural innovation from @kimseverson.bsky.social.

The context is a taxpayer-funded public institution doing modern genetics that helps millions of people, but the story is framed as a branded treat from a cute couple at the bucolic-sounding Wild Peanut Lab. Genius!

How an M&M Sparked the Search for the Next Perfect Peanut

www.nytimes.com

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Reposted by Will Masters

Julia Belluz @juliabelluz.bsky.social · Jul 16

Many moons ago, @kevinh-phd.bsky.social and I talked about a book we wished existed. No fads, no weight loss hacks, no fear-mongering -- just the science of how food works in your body. Thrilled to share that we wrote it!
Out September 23, pre-oder here: www.penguinrandomhouse.com/books/671334...

Food Intelligence by Julia Belluz, Kevin Hall, PhD: 9780593332306 | PenguinRandomHouse.com: Books

The essential guide for understanding what you’re eating, and the forces that are driving you to eat it. Nutrition isn’t rocket science; it’s harder. There are new diet fads, bold...

www.penguinrandomhouse.com

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