>fiber is protective against many of the negative effects associated with fructose.
Sorry for my ignorance in the subject, but isn't fiber the non digestible part of food? I've read that it absorbs some toxins, but how it can have such a big impact?
It's probably not as simple as just the fiber in fruits protecting against fructose/glucose, but it does help. (EDIT: what I mean is, don't replace fruits with a glass of metamucil and sugar :))
Soluble fiber is just that: soluble in water. In your stomach, it absorbs water and turns into a sort of carb-trapping gel. While the carbs are still eventually digested, the gel slows down the absorption. This is good, because it helps to regulate your blood sugar (not as much of a big spike and drop).
Since blood sugar spikes == insulin response == hungry signals, this is quite useful.
Insoluble fiber is also useful, but mostly just for waste processing.
I have read that fiber helps control your blood sugar levels (by carrying the sugar away before your body can process it), but I cannot find any good references.
Sorry for my ignorance in the subject, but isn't fiber the non digestible part of food? I've read that it absorbs some toxins, but how it can have such a big impact?