Iron Deficiency Anemia Tied to Hearing Loss. Iron deficiency anemia should be relatively easy to manage. So see your doctor, get a blood test, and manage your anemia. That said, Dr. Daniel Fink, a leading noise activist, cautions that the study appears to be a preliminary one. The study reviewed data from approximately 300,000 deidentified adult patient records at Milton K. Hershey Medical Center in Harrisburg, Pennsylvania. The diagnosis of hearing loss was made by mention of one or more diagnostic codes for hearing loss on at least one encounter. The diagnosis of iron deficiency anemia was made from laboratory tests. Then statistical analyses were performed. No audiometric tests were done, and the prevalence of hearing loss was much lower than that reported in other studies. Dr. Fink thinks this report might help guide future research, but the fact remains that noise exposure, not iron deficiency anemia, is the major cause of hearing loss in the United States.