Hemochromatosis, diabetes, and g6pd deficiency are all diseases that have a significant impact on our society, and to us, it always seemed to have a negative effect. However, with more knowledge on these diseases, we realize that these diseases still exist because it has benefits towards our survival and evolution. Despite being a disease that kills many people because of excess iron, hemochromatosis actually had had evolutionary advantages, that provided protection during the deadly bubonic plague and excess iron in an environment with constant blood loss. Diabetes is another condition that is harmful in our nowaday society but was essential to survival in the past. During the younger dryas where temperatures were extremely low, having high
