How does “Iron Deficiency Anemia” (low ferritin levels) in women block the success of hair treatments?

Ferritin is the body’s iron storage protein, and for hair follicle cells to divide (mitosis) and produce hair, ferritin levels must be at least 40-70 ng/ml. When there is an iron deficiency, the body sends the small amount of iron it has to vital organs such as the heart and brain instead of non-vital tissues like hair. Due to the lack of blood, the amount of oxygen reaching the hair follicles decreases, and the hair rapidly transitions from the anagen phase to the telogen (breakage/shedding) phase. No matter how much hair mesotherapy is done externally without raising ferritin levels internally, a lasting improvement cannot be achieved because the follicles suffer from a lack of raw materials (oxygen and iron).