4 ms·
Slight correction: sucrose (table sugar) and fructose are not metabolically equivalent. There's an enzyme in your duodenum which cleaves the sucrose molecule i
by ender7 15y ago
Slight correction: sucrose (table sugar) and fructose are not metabolically equivalent.
There's an enzyme in your duodenum which cleaves the sucrose molecule into one fructose and one glucose molecule semi-instantly. In both cases, your body ends up with a bunch of fructose. However, if you're eating table sugar, only half of the resulting calories are from fructose; the rest are from glucose.
- dredmorbius 15y ago"Fructose" in Lustig's case is HFCS. HFCS is (depending on the formulation) ~45% - 85% fructose, with the remainder being glucose, and a typical formulation being close enough to 50-50 that it's a wash. Sucrose is a bound molecule, HFCS is free fructose + glucose molecules. So, while there are some differences (and I suspect there actually are significant differences between HFCS and table sugar), for the most part, eating a lot of foods formulated with HFCS is very, very similar, metabolically, to eating a lot of foods formulated with table sugar.