Evidence gaps for the global problem of iron deficiency and iron deficiency anemia in women and girls of reproductive age.

The symptom of heavy menstrual bleeding and the frequently associated condition of iron deficiency (ID) individually and collectively adversely impact the lives of women and girls of reproductive age in various ways. The insidious but sometimes profound effects of periconceptual ID on the developing fetus may continue throughout the individual's life with consequences that are also felt by families, friends, and society at large. Unfortunately, in most instances, current healthcare policies are not designed to address the plethora of issues in a fashion that will result in meaningful improvement in health and other outcomes that affect both individuals and society. Identification and prioritization of the many evidence gaps will be an essential component of the strategy for change. This article identifies and describes the evidence gaps and provides direction for investigators and those involved in healthcare policy.