Iron Deficiency Caused Follicle to Die?

I have been told my a so called hair expert that hair that fell out from iron deficiency could have caused the hair follicle to atrophy and die. What is the chances of this happening. My hairloss lasted about 4 months. Thanks

I would need to know whether you are male or female and if the iron deficiency resolved (you commented that it ‘lasted about 4 months’). Generally, if you are iron deficient, reversing the process should bring the hair back after a hair cycle has occurred. I do not know enough about your history to answer your questions more specifically, though.