This thread is for any off-topic subjects & chat. If threads are going off topic the mods will move those posts into here. Any (light-hearted!) arguments should be here -just keep it civil and within the charter rules....
Anyway, the only real difference that I can see versus normal white bread is that you're fermenting your own yeast instead of using packaged yeast.
There was a thread a good while ago saying sourdough had lower GI figures, maybe even lower than brown.
It seems the store bought sourdough isn't fermented so it's good your making it yourself.
The only widely available one I have seen is "la brea" which is got in tesco.