I don't know how reliable this is but if it is relibale and
accurate it's interesting reading...
Another reason wheat makes you fat is that in the US, for the past thirty years, wheat flour has contained bromine compounds as “dough conditioners”, enhancing the stretchy, glue-like properties of dough that allow bread to rise and pizza dough to hold together as it is spun in the air. Before that time, iodine was used for the same purpose; in fact, a slice of bread used to supply a day’s requirement of iodine, an essential nutrient. Bromine, however, is a toxic substance that interferes with the beneficial actions of iodine in the body. Iodine, when complexed with the amino acid tyrosine, forms the thyroid hormones triiodothyronine (T3), and tetraiodothyronine (T4). By interfering with thyroid hormones, brominated wheat flour may also be contributing to America’s obesity. In Europe, bromine additives are not allowed.
Mark Hyman, MD: Three Hidden Ways Wheat Makes You Fat