I don 't agree. Fructose is the stealth bomb of carbs. It goes first to replenish liver glycogen, through a specific enzyme. This one unfortunately runs out fast, and when it's over, the rest of fructose will be converted in tryglycerides. Only prolly 20/25 grams of fructose a day can be used safely.... My 2 cents
Metformin is the best glucose disposal agent out there. I used since 1996 to carb up or to go in ketosis faster with the old bodyopus diet. I used bidiabe another gucose disposal agent but not with the same results. One thing that happens when starting glucophage while dieting is a drop of weight quite immediatly...