Anemia in Pregnancy By Lara A Friel, MD, PhD, University of Texas Health Medical School at Houston, McGovern Medical School Reviewed / Revised Oct 2021 | Modified Sep 2022 View Patient Education Symptoms and Signs Diagnosis Treatment Key Points Iron Deficiency Anemia in Pregnancy Diagnosis Treatment Prevention Folate Deficiency Anemia in Pregnancy Diagnosis Treatment Prevention Hemoglobinopathies in Pregnancy Normally during pregnancy, erythroid hyperplasia of the marrow occurs, and red blood cell (RBC) mass increases.