The domestication of livestock for food occurred very recently in time. In most regions of the world it coincided with grain and vegetable farming, which commenced, in most cases, anywhere from 10,000 to 4,000 years ago depending on the region of the world one studies. Yet as recently as the Twentieth Century there were still small isolated pockets of people here and there who were still Hunter Gatherers.
History of Food
The following quoted excerpts from the Software Toolworks Multimedia Encyclopedia regarding scurvy illustrate how fast man reacted to the first recognized nutritional deficiency disease. From our perspective today we can only assume that folks of that era must of been very ignorant. But actually they were no different than folks are today in what we call the “Information Age.”