It slows the absoorption of carbs. If absorption of glucose into the blood stream is rapid, the pancreas freaks out and secretes a lot of insulin because too much glucose in the blood stream is very toxic and glycates the hell out of important stuff; in this situation there is likely going to be an "over-shoot" of insulin. If the fiber slows the digestion and absorption, the pancreas is less likely to over-shoot insulin and so you don't get more insulin than is appropriate for the amount of carbs that you ingested.
Originally Posted by Melbyrd
In the PB you're not going to be consuming anything that causes such a fast absorption.
Stabbing conventional wisdom in its face.
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