Is depression caused by Anemia?

Chronically Anemic. 3 months ago my ferritin was 1.4 and my iron was 4. It was higher 3 months before that so now it’s probably lower. I get an iron transfusion this week. I haven’t had one in 3 years. I used to get them weekly. Though I moved and had new doctors so the process of getting them again been long. My stomach can’t tolerate iron supplements. I’m wondering if anyone’s depression improved after getting iron infusions? I can’t recall how I felt after them last time. I’ve known about my severe anemia for 12 years iron supplements have never helped me. TIA