Iron deficiency, despite being one of the most prevalent nutritional issues worldwide, can lead to various symptoms, including fatigue and major depressive disorder (MDD). Iron plays a vital role in the synthesis of neurotransmitters and is crucial for fetal development during pregnancy. This has led researchers to explore the possibility that iron deficiency during and after pregnancy might be linked to postpartum depression. In the United States alone, an estimated 10 million people are iron deficient, which is a significant figure compared to the 15 million individuals diagnosed with MDD. Globally, more than 3.5 billion people suffer from iron deficiency, making it the most common nutritional deficiency.
