Briefly, I will say that things like fortification of staple foods and things like multiple micronutrient supplements, which are low cost, that are given before delivery can help to reduce anemia. It's important to note that a lot of vulnerability exists before birth and before getting pregnant, so if you can shrink that pool, you shrink the pool of risk as well.
When blood volume in a pregnant woman doubles during pregnancy and she is anemic already, that puts her at extreme risk of hemorrhage during pregnancy. The face of this pandemic and this crisis in malnutrition is a teenage girl bleeding out in the operating room theatre because she hasn't had low-cost, high-impact interventions such as that.