[ronin0352]

Glycaemic Index Effects on Fuel Partitioning in Humans - Research Review by Lyle McDonald
Just a small exerpt, but I thought this was a pretty good read.

Originally Posted by Lyle M

...The short-, mid- and long-term studies typically examined things like blood glucose, insulin, blood fatty acid levels, carb and fat oxidation and/or energy expenditure over periods ranging from 6-24 hours (or longer) after the ingestion of foods or meals differing in GI. I’m not going to detail each and every one but, with one or two exceptions, the majority simply found no significant difference in things like fatty acid suppression or fuel oxidation despite significant differences in blood glucose and insulin response. Even longer term intervention studies of 30 days to 10 weeks found no significant impact on weight or body composition for diets designed with different GI levels....