Dr. Donald (Don) Layman

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439 appearances 1 recordings 1 series first heard Jun 2026 last heard 30 Jun

Dr. Donald (Don) Layman’s voice in public audio — every appearance, attributed to the second.

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Recordings per month over the last 12 months — 1 in all, peaking in Jun 2026 with 1.

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The Dr. Gabrielle Lyon Show · Is the Protein RDA Too Low for You? What 40 Years of Studies Show - Dr. Don Layman & Dr. Heather Leidy | GLS #214 · 30 Jun 2026 podcast

Will you just pause and explain that a little bit?

When you're putting together a protein, you're using these amino acids like building blocks to put it together.

And if you look within the total human body and look, the essential amino acids make up 50% in the body of all those amino acids.

But if you look at the dietary guidelines, the guidelines say that

only getting 25% of those amino acids is enough.

And I worry about that because it's based on techniques that don't really look at the metabolic outcome.

So I think that's an area that is going to have to get explored more.

And my concern with it is in the plant-based narrative that

people should have more plant-based diets.

Americans, as they do that, shift to using grains.

They don't shift to using beans and lentils and things that would be higher protein quality.

So of the plant-based protein in the American diet, more than 80% of it comes from grains and almost all of it from wheat, which is limiting or deficient in leaf

four of those essential amino acids.

So we've done a lot of modeling with that.

And if you get below 50% animal proteins in your diet with the current American pattern of using grains... What was the last?

So what we know for absolute certainty over the last 40 years of the dietary guidelines and the food guide pyramid is that it's changed the dietary pattern.

we know that when it appeared that egg consumption, dairy consumption, beef consumption went down by 35 to 40% across the board.

And people say, well, protein didn't really change because people started eating more chicken.

And that's true, but they started eating it in forms that weren't as healthy.

They started eating it as barbecued wings, and they started eating it as fried and breaded chicken patties and chicken fingers and all kinds of things like that.

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