It seems you don't understand what a toxin is. It's the liver's job to metabolise toxins. Hence, any metabolite processed almost exclusively by the liver is de facto a toxin. No offense, but if you had a biochemistry degree, that would be trivial to you.
Originally Posted by Derpamix
The gut protects the rest of the body from fructose by having a variable limited permeability to fructose. So often the gut takes the hit, rather than the liver.
As I said before, fructose is 100 times as oxidising as glucose.
Rat studies (as per your link) are irrelevant to humans.
F 5 ft 3. HW: 196 lbs. Primal SW (May 2011): 182 lbs (42% BF)... W June '12: 160 lbs (29% BF) (UK size 12, US size 8). GW: ~24% BF - have ditched the scales til I fit into a pair of UK size 10 bootcut jeans. Currently aligning towards 'The Perfect Health Diet' having swapped some fat for potatoes.