por si quieres echarle un vistazo por encima, es un tocho de cojones:
http://www.jci.org/articles/view/37385
http://wholehealthsource.blogspot.com/2008/11/fructose-index-is-new-glycemic-index.html
según lo último que ha salido por la red no se recomienda más de 40g de fructosa al día...
Plasma glucose, plasma insulin, and insulin sensitivity. Indices of insulin sensitivity/glucose tolerance at the measured time points with effects of sugar analyses are presented in Supplemental Table 8. In general, insulin sensitivity and glucose tolerance were not affected by the consumption of glucose but were decreased during the consumption of fructose
In contrast to fasting TG, indices of postprandial TG — 23-hour AUC, TG exposure, postprandial TG peak — did not increase in subjects consuming glucose but were markedly increased in subjects consuming fructose (Figure 2, A and 
. Fasting (Figure 3, A and and postprandial apoB, the apoB/apoA1 ratio, and total and LDL cholesterol were also unchanged during consumption of glucose and increased during consumption of fructose. In both groups of subjects
In subjects consuming glucose, fasting small dense LDL (sdLDL) concentrations (Figure 3, C and D) initially decreased at 2 weeks and were not different from baseline at 10 weeks. In contrast, fasting sdLDL concentrations increased progressively in subjects consuming fructose. sdLDL was the lipid parameter most affected by preexisting metabolic syndrome risk factors (MSRF), with increases during fructose consumption more than 2-fold greater in subjects with 3 MSRF than in subjects with 0 to 2 MSRF (Supplemental Table 7). Fasting oxidized LDL concentrations did not change in subjects consuming glucose but increased in subjects consuming fructose.
