Lots of glucose molecules were found in this vein, though, with labels showing some had been chemically transformed from fructose molecules in the small intestine. (sciencenews.org)
In that situation, there is lots of glucose for the brain to use. (idmprogram.com)
It turns out he has some weird genetic thing called renal glycosuria, which spews lots of glucose into your body when you exercise too much or stress too much or something. (housegoeshome.com)