<<Disclaimer: Verify this information before applying it to your situation.>>

Perhaps this explains the weight gain with the different flours.

In the book, ENTER THE ZONE, (Barry Sears), the glycemic index is
explained as the rate at which the carbohydrate enters the bloodstream.
Quoting from Sears:  "There are 3 common sugars that comprise all edible
carbohydrates, and each has a different molecular structure, which
ultimately determines its rate of entry into the bloodstream.  Glucose is
the most common of these sugars, followed by fructose and galactose."

"Glucose is found in grains, pasta, bread, cereal, starches and
vegetables.  Fructose is primarily found in fruits.  Galactose is found in
dairy products.  However, while all of these simple sugars are rapidly
absorbed by the liver, only glucose can be released directly into the
bloodstream.  This is whyglucose-rich carbohydrates....virtually sprint
back from the liver into the bloodstream, while galactose and fructose,
which first must be converted to glucose in the liver, enter the
bloodstream at a slower rate.." (pages 16 - 17)

How is the glycemic index determined?  In addition to the structure of the
simple sugars in the food - glucose, galactose or fructose - the amount of
soluble fiber and the fat content of the food are also players.

Fiber acts to slow down the rate of entry of other carbs into the blood.
The higher the fiber content of a carb, Sears says, the slower the rate of
entry into the blood.

So a high glycemic, low fiber food is easily digested, and absorbed into
your bloodstream.  Now, Sear's approach is to balance the insulin -
glucagon levels, and I'm not going to try to go into that, except to say
that these high glycemic foods cause our bodies to release insulin in a
quick response.

The standard for glycemic index is white bread.

Foods that have a higher index than white bread - less fiber, more
glucose:

Puffed rice
Corn Flakes
...
Millet
Instant Rice
Instant potato
Microwaved potato
Simple sugars (Maltose, glucose)
Tofu ice cream
Puffed rice cakes.

Foods that are high fiber, low in glucose (Reduced insulin secretion):

Grain based foods:
Barley
Oatmeal (slow-cooking)
Whole grain rye bread
Fruits:
Apple
 Apple juice
Applesause
Pears
Grapes
Peaches
Vegetables:
idney beans
Lentils
Black-eyed peas
Chick-peas
Dried Kidney beans
Lima beans
Tomato soup
Peas

A complete list is on pages 269 - 272 of The ZONE.  Maybe consciously
increasing fiber content is significant.  Incidentally, in the
US, metacmucil powder is gluten free, the wafers are not.  I just called
Proctor & Gamble to confirm a week & a half ago.

Bec
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Pennsylvania