View Full Version : Simple carbs with low GI....

12-01-2004, 04:46 PM
I'm a little confused about GI ratings......For example, fruit is considered a simple, sugary carb while oatmeal is considered a slow burning, complex carb. However, an apple has a lower GI than oatmeal. So why is oatmeal considered slow-burning and apple is not?

12-01-2004, 04:56 PM
an apple is

12-01-2004, 06:05 PM
Fiber, fiber, fiber

12-01-2004, 08:02 PM
Fiber, fiber, fiber

12-02-2004, 09:30 AM
Im lazy - what's the amount of fiber in an apple compared to that of oats? Also, what are their GI's?

12-02-2004, 02:41 PM
a medium apple has like 80 cals, 3 grams of fiberand a s*it load of nutrients
1/2 cup oats (which i like more) has 5 grams in 1/2 cup and like 150 cal (dry)

12-02-2004, 03:05 PM
So per calorie they have roughly the same amount of fiber: apple = 80cals = 3g fiber; oats = 75cals = 2.5g fiber (1/4c). I think there is more to it than fiber...?

12-03-2004, 05:41 AM
One of the nutrition gurus on the board can answer this better and in more detail than I can, but anyway:
Fructose (the kind of carb fruit mainly contain) take a different path from the digestive intestines to the blood than does glucose. Fructose must first be transformed into glucose in the liver, and then released into the blood. Also; if the level of glucose in the blood isnít low enough, the fructose is either stored in the liver, or stored as fat.
This whole process takes time, and I suppose the release of glucose from the liver is only gradual. Consequently the GI isnít raised very much.

OK, so this may not be a absolutely perfect or complete description, but the basics of it should be fairly accurate. (Anyone feel free to add too or correct it.)

12-03-2004, 11:12 AM
Sounds failry accurate to me.

As for figuring out the caloric contents of foods:

Always found this place to be super helpful.