7 citations
,
January 2002 in “Biological Trace Element Research” Children with pituitary dwarfism have higher zinc and copper, lower manganese, and similar iron levels in hair compared to normal children.
6 citations
,
January 1971 in “Pathology” Children's hair needs only a little iron for normal growth, regardless of their body's iron levels.
4 citations
,
July 2019 in “IOP conference series” Most young men with early gray hair have low vitamin D but normal iron levels.
January 2006 in “Heilongjiang yiyao kexue” Children with frequent respiratory infections may have low levels of zinc, iron, and copper.
July 2004 in “Transplantation” Iron deficiency is common in kidney transplant patients, and while iron treatment helps, it can cause high red blood cell levels.
January 2026 in “Journal of Trace Elements in Medicine and Biology” Dogs have more iron and copper in their hair than cats, and outdoor animals have higher iron levels.
1 citations
,
March 2020 in “QJM: An International Journal of Medicine” Lactoferrin levels are lower in people with chronic hair shedding, suggesting supplements could help treat it.
August 2022 in “International Journal of Health Sciences (IJHS)” Low levels of zinc, ferritin, and vitamin B12 are linked to severe hair loss in pregnant women during their last two trimesters.
7 citations
,
January 2018 in “PubMed” Low levels of iron, copper, and calcium may cause early hair graying.
16 citations
,
January 2017 in “DOAJ (DOAJ: Directory of Open Access Journals)” Low levels of vitamin B12 and ferritin are linked to early hair graying.
January 2011 in “Nuclear Techniques” Lead levels in hair increased due to environmental exposure, while iron, copper, and zinc levels stayed stable.
March 2025 in “American journal of biochemistry & biotechnology/American journal of biochemistry and biotechnology” Higher levels of certain hormones and lower levels of minerals may contribute to hair loss.
163 citations
,
November 2003 in “Journal of Investigative Dermatology” Low iron levels may be linked to some types of 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.
May 2025 in “AlQalam Journal of Medical and Applied Sciences” Low iron levels are common but not directly linked to hair loss in women.
May 2024 in “World Journal Of Advanced Research and Reviews” Low iron levels are strongly linked to chronic hair loss in women.
Reducing iron levels didn't improve heart health or metabolism in women with certain ovarian issues.
17 citations
,
January 2013 in “International Journal of Cosmetic Science” Higher metal levels in hair are linked to poorer perceived hair health.
7 citations
,
January 2017 in “Journal of Clinical Biochemistry and Nutrition” Higher vitamin D levels are linked to higher iron levels in Korean women without metabolic syndrome, but not in those with it.
5 citations
,
January 1976 in “Acta Dermato Venereologica” Sodium and potassium levels in Egyptian scalp hair differ by sex and can aid in legal cases.
2 citations
,
January 1976 in “Munich Personal RePEc Archive (Ludwig Maximilian University of Munich)” Sodium and potassium levels in Egyptian scalp hair differ by sex and can aid in legal cases.
Matriptase-2 helps control iron levels by suppressing hepcidin, and its deficiency can cause iron-deficiency anemia.
October 2023 in “Journal of Preventive Diagnostic and Treatment Strategies in Medicine” Low ferritin and Vitamin D levels may cause hair loss after COVID-19.
239 citations
,
July 2002 in “Clinical and Experimental Dermatology” Low iron and L-lysine levels can cause hair loss in women, and increasing these nutrients can reduce hair shedding.
62 citations
,
January 2013 in “Skin Pharmacology and Physiology” Low iron and vitamin D levels are linked to hair loss in women.
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.
June 2026 in “Journal of Cosmetic Dermatology” FFA patients have higher metal levels in hair, possibly linked to product use.
15 citations
,
October 2011 in “Gynecological Endocrinology” Obesity changes androgen levels in women with PCOS, leading to higher testosterone relative to androstenedione.
63 citations
,
May 2017 in “American Journal of Clinical Dermatology” People with alopecia areata often have lower levels of vitamin D, zinc, and folate, but more research is needed to understand if supplements can help treat it.
January 2022 in “International Journal of Medicine in Developing Countries” Many patients with hair loss had low iron and vitamin D levels, but thyroid issues were not common.