TLDR Iron and ferritin levels don't affect alopecia areata.
This study evaluated serum iron and ferritin levels in 50 patients with alopecia areata (AA) compared to 50 control subjects without hair loss. The results indicated no significant differences in mean hemoglobin, ferritin, and iron levels between the two groups. Additionally, these levels did not vary significantly with the extent or duration of AA, family history, history of atopy, or nail involvement. The study concluded that serum iron and ferritin levels did not appear to play a role in the etiology of AA.
163 citations
,
November 2003 in “Journal of Investigative Dermatology” Low iron levels may be linked to some types of hair loss in women.
124 citations
,
August 1990 in “British Journal of Dermatology” Diffuse alopecia in women may be related to androgens and iron deficiency, and basic hormone and nutrient screening is useful.
51 citations
,
March 1986 in “Acta Dermato Venereologica” Alopecia patients had similar element levels to normal people, except for differences in copper and low selenium.
1 citations
,
October 2020 in “IP Indian journal of clinical and experimental dermatology” Low serum ferritin levels are significantly linked to diffuse hair loss.
93 citations
,
January 2009 in “PubMed” Low iron levels are linked to hair loss in women.
83 citations
,
November 2002 in “British Journal of Dermatology” Low iron levels are not directly linked to chronic hair loss and iron supplements may not help.