For another random data point: There's an old book called "Life without bread" that was a pre-Atkins low carb diet written by a German Doctor named Wolfgang Lu

For another random data point: There's an old book called "Life without bread" that was a pre-Atkins low carb diet written by a German Doctor named Wolfgang Lutz. He claimed that, after much trial and error, 72 grams (about 6 slices of bread) was the cutoff, and further restriction didn't particularly help patients in any measurable way. Leben Ohne Brot (Life Without Bread) http://www.amazon.com/Life-Without-Bread-Low-Carbohydrate-Diet/dp/0658001701/ref=cm_cr_pr_pdt_img_top?ie=UTF8 http://www.amazon.com/Life-Without-Bread-Low-Carbohydrate-Di...