Dr. Donald Layman

But the serving sizes, I think if you look back at the food guide pyramid, it was six to 10 servings per day.

Now I think it's two, and I might be wrong on this.

I think it's two to three servings of whole grains and two servings of refined grains or less.

And so it's much lower number.

So basically, carbohydrates are an energy source that relates to your physical activity, something you and I talk about.

Kind of got a little sidelined lately, but... Working on a paper called Carbohydrate Tolerance, and that basically...

Everyone has a tolerance at about 130 grams per day.

That's sort of your requirement.

And that's kind of in the three servings of vegetables, two servings of fruit, two to three servings of grains.

That's kind of that level.

Everything above that really is used by your muscle physical activity.

And so currently Americans are eating almost 300 grams of carbohydrates per day.

That would relate to needing about three hours of physical activity per day to burn that.

It's no reason why.

And I mean, I think that's a major reason why people are overweight.

And we're seeing the issues with diabetes.

No.

But hopefully, eventually.

Simply, the guidelines now recognize much lower carbohydrate.

The old guidelines sort of started with, oh, you should eat a lot of carbohydrates, and then what else?