white bread and refined flours in general are toxic for your body because they have been stripped of virtually all vitamins, minerals, fiber, and other important nutrients. Because of this, the body does not know how to properly digest and assimilate these so-called foods, which can lead to health problems. Refined white flour has also been bleached with chlorine and brominated with bromide, two poisonous chemicals that have been linked to causing thyroid and organ damage.