They didn't eat bleached wheat flour packed full of preservatives, fillers and additives. Check out what types of grains they ate and made bread from. Ancient grains were far more nutritious than the stuff pushed as grain products today. They also didn't ripen their wheat and oats with Roundup. Flour bleaching is an oxidation process which uses acidic chemicals to speed the process. Prior to chemical bleaching, flour had to sit around and be exposed to sunlight to lose its yellow color. The process of chemically bleaching flour strips a large portion of the vitamins, minerals and nutrients from flour as well as the natural yellow color of the grain. Most of what we get now days has basically about the same nutrition as Elmer's glue, hence why they have to "fortify" most flour with folic acid and vitamins now days.