Dr. Donald (Don) Layman

speaker

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

We may have different opinions about it, but basically it goes back to 1980 and the very first dietary guidelines, that 10% number came out of thin air in a committee, and we've basically had it ever since.

Is there a better number?

I think that's probably why it didn't change this time.

Is 11% or 9% a better number?

I don't think there's any data to pick a better number.

So I think that's why it didn't change.

I think if you look at the big picture though,

Where we get our saturated fat has changed.

As we talked previously, we've changed our animal protein sources and that changed our source of fat.

We now get more than a third of our saturated fat comes from hydrogenated seed oil.

Is that a problem?

It's a synthetic fat.

And up until...

2020, those synthetic fats were filled with trans fatty acids, which everyone recognizes was a problem.

And so when we see a lot of these surveys about health and longevity and things like that, one has to realize they were all underpinned by trans fats.

So, you know, arguing that that was a good choice, I think is a really weak argument.

Why didn't it change?

Then I think you have to always say how many reputations and how much money is based on keeping it.

And I think you have to go down that rabbit hole.

It's just that number has really very little data to back it up.

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