Three Diets, One Lesson, and a Quiet Number on My Arm
I spent three days this week looking at vegetables.
Not growing them — I’m done with that chapter. Just looking at what the world’s healthiest diets actually do with them, and why they all seem to arrive at the same place from completely different directions.
Monday we looked at how vegetables show up across three diets. The Mediterranean table treats them as the main event — roasted, braised, dressed in good olive oil, eaten slowly with people you like. The Blue Zones — Sardinia, Okinawa, Loma Linda — don’t make a production of it. Vegetables are just part of the landscape. Grown in small gardens, eaten seasonally, cooked simply. Nobody’s tracking servings. They’re just eating what’s there. The Nordic approach works with what a short growing season actually provides. Root vegetables, cabbage, kale, beets, legumes. Hearty, unglamorous, built for long winters and limited sunlight. Not pretty on a plate, but remarkably effective for health.
Three different cultures. Three different tables. Same principle.
Wednesday we looked at why they all agree. The science turns out to be pretty clear. Vegetables slow the absorption of sugar into the bloodstream — the fiber acts as a buffer. For anyone managing blood sugar or on a GLP-1 medication, that buffering effect matters every single meal. The diversity of plant fiber feeds the microbiome. Professor Tim Spector’s research is blunt about this — variety is the point. Thirty different plants a week sounds like a lot until you start counting. And the long-term evidence on disease prevention is about as strong as nutritional science gets. Consistent vegetable intake is linked to lower rates of cardiovascular disease, type 2 diabetes, and certain cancers. Not a guarantee. Just a very good argument for the plate.
Then Friday I got personal.
I wear a FreeStyle Libre 3 on the back of my arm. It sits there quietly, sending my glucose readings to my phone every minute. No fingersticks. No guessing. Just a number that tells me exactly how my body is responding to what I just ate.
Last week I had a chef’s salad for lunch. Glucose barely moved. Two days later I had a hamburger. Different story entirely.
That’s not a diet lecture. That’s data. The kind a farmer appreciates — real, immediate, and honest. You plant something, you watch what happens. The Libre 3 is just a very small field.
What strikes me about all of this is how the wisdom came first. The Mediterranean grandmother didn’t know about the microbiome. The Okinawan farmer wasn’t tracking glycemic response. The Nordic cook wasn’t thinking about cardiovascular outcomes. They were just eating what their land and their culture gave them, the way people had eaten for generations.
The science caught up later and confirmed what they already knew.
I find that reassuring. It means the answer isn’t complicated. Eat more plants. Eat them whole. Eat them often. Let the culture around the table change. The vegetables do the same work they always have.
The quiet number on my arm agrees.
From the Field
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These are observations from one retired dirt farmer — not prescriptions.
William questions everything, including his own opinions.
Curiosity and humility over authority and certainty.
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