Dr. Donald Layman

And then into carbohydrates, people need to restrict that really in line with their energy needs, and particularly favoring more whole grain.

So that's kind of an overview of the layout, and it's really presented as bullet points which are very easy to understand.

I think that the main reason is that most animal proteins, which are probably the most nutrient-dense proteins in the food supply, are also a source of cholesterol and saturated fat.

So I think they were trying to avoid it.

There's been a longtime push that we needed a more plant-based diet.

So that's sort of been an underlying.

So I think that's really been the main issue.

It's sort of been behind the cloak of that saturated fat issue.

So the RDA created back in the 70s really was

trying to get a minimum number of protein that individuals would need.

And what they did was they used 25-year-old, young, healthy, ideal weight, physically active males, and fed them nothing but a dairy, high-quality dairy protein for seven days and looked at nitrogen balance.

So they got a number, 0.8 grams per kg, which is very low,

that probably only applies to physically active, healthy, young 25-year-olds.

And so I think it gives us sort of a basement number, but it has nothing to do with optimum health.

I mean, nitrogen balance...

is sort of an indicator for growth, which is where it really developed.

It developed out of animal sciences.

When an animal or a person is growing, they're gaining nitrogen.

They're growing.

They're gaining muscle mass.