1. Pimentel states on page 60, that glucose "is completely absorbed by the body within the first one or two feet of the gastrointestinal tract.2. His definition of "gastrointestinal tract" on page 136 says that it includes "the mouth, esophagus, stomach, small intestine, colon, rectum, and anus."3. From 1 and 2, above, that tells me that glucose is probably absorbed before it has a chance to enter the duodenum.My conclusion is confirmed by Pimentel's claim on page 95 that glucose never [edit: this word added later, whoops! ] reaches the small intestine.My question is, how is this possible? I can swallow some glucose, so it's not all absorbed in my mouth. Is it all absorbed in the esophagus? That seems highly unlikely to me. I can't believe there is enough time.If I am correct, that means that Pimentel must believe that all of the glucose is absorbed in the stomach. But does the stomach absorb nutrients into the bloodstream? I never thought that was possible.