Professor Frédéric Leroy: Why Meat Was Vital for Human Survival, and How to Read Red Meat Studies

Food scientist Frédéric Leroy says meat was vital for human survival and shaped how we built communities. Here's his take on our food disconnect, weak evidence and nutrients for vulnerable groups.

By Harry Gray · Nov 4, 2026 · 3 min read

By The Meat Mafia (Harry Gray and Brett Ender)

Frédéric Leroy trained as a bioengineer. He spent years in labs studying fermentation and food microbes. Then the meat debate pulled him in.

He noticed something about it. Every time a point got answered, the goalposts moved. To keep up, he had to learn history, anthropology and nutrition, and work with experts in each.

What he found, he told us, is that meat has always been more than food. Bread matters in Christian culture and rice matters in Asian cultures, but he thinks meat carries the most symbolic weight of any food.

He also thinks it's the food we owe the most to. For most of human history, he says, we didn't have a choice.

"It was vital for survival." (24:18)

Cooperative hunting, in his view, helped shape how humans live together and treat each other. Meat wasn't just fuel. It helped build communities.

Today he sees the opposite problem. Supermarket shelves are full of products in every flavor and package, and people don't know where they came from, how to combine them or how to prepare them.

"So you're completely lost as a contemporary human being." (33:16)

He says that disconnect matters, and it makes people easy to confuse with headlines about red meat.

So we asked him how to make sense of it all: the history, the studies and what's at stake for kids and pregnant women. His views, not medical advice.

Listen to the full episode · Watch on YouTube

TL;DR: Professor Frédéric Leroy says humans couldn't have survived without red meat for a very long time, and that cooperative hunting helped shape our communities. He believes modern eaters are lost among packaged foods they don't understand. He cautions that a statistically significant result isn't the same as strong evidence, and he raises concerns about nutrients like B12 and DHA for pregnant women and children on vegan diets. His views, not medical advice.

Who is Frédéric Leroy? A professor of food science and biotechnology at Vrije Universiteit Brussel who studies meat, fermented foods and the history of how we think about diet.

Key takeaways

Humans have both a fear of new foods and an attraction to them, he says (09:00).
He believes people couldn't have survived without red meat for a very long time (24:00).
He thinks meat carries more symbolic meaning than any other food (27:00).
Modern eaters are disconnected from where food comes from, he says (33:00).
Statistically significant doesn't mean strong evidence (48:00).

Meat and becoming human

Leroy says our ancestors had to become cooperative hunters, and that shaped human communities. He also says diets varied: some groups, like the Hadza, eat a lot of honey. Humans are flexible, but in his view meat was the constant.

The modern food disconnect

He describes shoppers surrounded by products they can't judge. They don't know what's wholesome or how to prepare it. He thinks rebuilding that knowledge matters more than any single rule.

How to read red meat headlines

Leroy points out that a statistically significant finding can still rest on weak evidence. He urges readers to look at how strong the evidence behind a claim really is.

Vulnerable groups

He says nutrients like B12 and DHA, which matter for brain development, tend to be lower in vegan pregnant women, and that he wouldn't take that risk with kids. If you're pregnant or feeding young children, plan nutrition with your clinician.

FAQ

Who is Frédéric Leroy? A professor of food science and biotechnology at Vrije Universiteit Brussel who researches meat and fermented foods.

Does Frédéric Leroy think humans evolved to eat meat? He says people couldn't have survived without red meat for a long time and that hunting shaped human communities (~24:00).

What does he say about vegan diets in pregnancy? He says B12 and DHA tend to be lower in vegan pregnant women and calls it a risk he wouldn't take (~42:00). Talk with your clinician.

How should you read red meat studies? Check how strong the evidence is, not just whether a result is statistically significant (~48:00).

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Not medical advice. This post summarizes a podcast conversation for education. The views are the guest's own. Talk to a qualified clinician before you change your diet, supplements or any medication.