Researchers tested the affect of white sourdough, regular white bread, whole wheat bread and whole wheat bread with barley on a group of overweight people aged 50 to 60 years old. When the subjects ate the sourdough bread, they saw the least blood sugar and blood insulin response, which is a good thing. There's an urban myth that if you want to lose weight, you shouldn't eat bread. But the truth is, bread is one of our biggest sources of grains and has a number of healthy benefits. It is likely that the fermentation of the sourdough changes the nature of the starches in the bread, creating a more beneficial bread. The milling process involved in making the whole wheat bread is similar to that used for white bread. The parts of the grain like wheat germ and bran that have the health benefits are taken out to create white flour and then partially added back in to make whole wheat. However not all whole wheat or whole grain breads are made this way.
