January 2025 in “Journal of the Egyptian Womenʼs Dermatologic Society” Higher substance P levels may cause discomfort in hair loss patients.
March 2012 in “Journal of The American Academy of Dermatology” Higher levels of certain nerve-related proteins are linked to hair loss in women with scalp pain.
September 2019 in “IP Indian journal of clinical and experimental dermatology” Hormones and iron deficiency are linked to female pattern hair loss, and hair thinning patterns are similar across different types of this condition.
September 2025 in “Romanian Journal of Medical Practice” Iron deficiency is linked to female pattern hair loss.
May 2025 in “AlQalam Journal of Medical and Applied Sciences” Low iron levels are common but not directly linked to hair loss in women.