Weight Loss Understanding the pscylogy and sabatoge of weight | Page 145

Using GL to sort the good, the bad and the suicidal 124 about how we interpret this research as it may apply only to postmenopausal women. Research like that quoted here is telling us that simply looking at calories or the energy of various foods, is not sophisticated enough when it comes to the complex metabolism of carbohydrate. In fact, as it turned out, GI itself was not quite sophisticated enough. As the GI story evolved, it became apparent that it had its limitations – albeit with only a few foods. Certain foods like carrots, pumpkin, certain breads( e. g., fibre enriched white bread) and watermelon had high GIs( over 70) so early proponents started avoiding these foods. The reality was that these foods were not a problem. Other foods like Basmati rice with low GIs were actually not quite as healthy as their GI would suggest. There was a missing factor. GI measured the degree to which the carbohydrate in the food turned into glucose in the blood. What it did not measure was how much carbohydrate there was in each food. Enter Glycemic Load or GL. GL adds into the formula how much carbohydrate there is in the food. With this addition carrots, watermelon, pumpkin and fibre enriched bread became acceptable as they all had low GLs( i. e., 10 or less). So for these foods, while the carbohydrate in them was readily turned into glucose, there was not very much in the food to start with. Basmati rice was the reverse story. While it had a moderate GI of 58 its GL was high( 20 or more) at 24. Professor Jennie Brand-Miller at Sydney University is a world authority on GI / GL and has published widely in this field. This chapter is just an introduction to the work of Professor Brand Miller and her colleagues. I recommend her books to you, especially her most recent – The Low GI Diet Cookbook. Recipes are something this book will not cover as I have no expertise in cooking( just ask my wife!). You can visit their website at www. glycemicindex. com and go to the database where you can quickly access the latest GI and GL data. In our various discussions, Jennie Brand Miller has explained to me that the biggest danger with GL is that people have a tendency to use