Low ferritin and vitamin D levels are linked to hair loss.
May 2025 in “Journal of the Egyptian Womenʼs Dermatologic Society” Vitamin D3 is a safe and effective alternative to steroids for treating alopecia areata, with fewer side effects.
April 2023 in “Clinical Chemistry and Laboratory Medicine” The document concludes that inflammation markers can be used in diabetes, vitamin D3 affects immune pathways, hyperthyroidism changes hormone levels, androgen levels help diagnose Adrenocortical Carcinoma, erectile dysfunction is linked to diabetes, hypogonadism is common in HIV-infected males, and hormones can be biomarkers for various conditions.
January 2019 in “Egyptian Journal of Dermatology and Venereology /Egyptian Journal of Dermatology and Venerology” Low vitamin D levels might indicate more severe hair loss in alopecia areata patients.
May 2018 in “DergiPark (Istanbul University)” Hormone levels studied are not linked to PCOS.
4025 citations
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December 2003 in “Human Reproduction” The 2003 consensus updated PCOS diagnosis criteria and linked PCOS to higher risks of diabetes and heart problems, recommending lifestyle changes to lower these risks.
52 citations
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March 1987 in “Journal of the American Academy of Dermatology” High DHEA-S levels may cause hair loss in young men.
37 citations
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September 2018 in “The Journal of Clinical Endocrinology and Metabolism” Intravaginal testosterone cream improves sexual satisfaction and reduces vaginal discomfort in postmenopausal women on breast cancer treatment without affecting hormone levels.
30 citations
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August 1992 in “The Journal of Clinical Endocrinology and Metabolism” Finasteride doesn't affect hormone levels in normal men.
18 citations
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November 1998 in “Comparative biochemistry and physiology. Part A, Molecular & integrative physiology” Changes in prolactin and DHEA levels are not required for the start of mink hair growth cycles.
1 citations
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October 2022 in “Evidence-based Complementary and Alternative Medicine” Traditional Chinese Medicine may help treat hair loss but needs more research.
January 2026 in “International Journal of Endocrinology” Lowering HER2 levels with certain drugs may reduce metabolic syndrome risk in women.
Lower serum irisin levels are linked to androgenetic alopecia but not to insulin resistance.
April 2024 in “Food science & nutrition” Many displaced schoolchildren in Cameroon are malnourished, with high rates of thinness, stunting, underweight, and deficiencies in iron and protein.
April 2007 in “Nature Clinical Practice Urology” Finasteride lowers PSA levels about the same whether taken at 1 mg or 5 mg daily.
19 citations
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April 2018 in “Clinical cardiology” Older men with low levels of a testosterone byproduct had a higher chance of developing an irregular heartbeat.
18 citations
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September 2015 in “Clinical Endocrinology” Women with PCOS have higher levels of a certain growth factor, which can be reduced by taking metformin.
15 citations
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January 2016 in “International journal of trichology” Low vitamin D3 levels are significantly linked to hair loss, especially in female students.
14 citations
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September 2021 in “Journal of Cosmetic Dermatology” Low vitamin D levels are linked to various types of hair loss, but more research is needed before using it as a treatment.
8 citations
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August 1970 in “JAMA” Excessive vitamin A can cause symptoms that mimic serious brain conditions.
7 citations
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January 2019 in “Indian dermatology online journal” People with alopecia areata often have lower vitamin D levels, which may be linked to the condition's severity.
2 citations
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December 2024 in “Gene Reports” Higher IL-37 levels are linked to more severe alopecia areata, but the gene variation doesn't affect disease risk.
1 citations
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May 2017 in “Journal of The American Academy of Dermatology” People with alopecia areata often have lower vitamin D levels than healthy people.
February 2026 in “Zenodo (CERN European Organization for Nuclear Research)” Triamcinolone is more effective for hair regrowth in alopecia areata, but Vitamin D also helps, especially if levels are low.
February 2026 in “Zenodo (CERN European Organization for Nuclear Research)” Triamcinolone is more effective for hair regrowth in alopecia areata, but Vitamin D also helps, especially if levels are low.
October 2024 in “Benha Medical Journal” Patients with Alopecia Areata have higher levels of certain inflammatory markers.
September 2020 in “Benha Journal of Applied Sciences” Higher IL-19 levels are linked to more severe Alopecia Areata.
June 2018 in “The Journal of Sexual Medicine” Finasteride does not negatively affect male reproductive function.
December 2020 in “The Medical journal of Basrah University” Low vitamin D levels may contribute to female pattern hair loss.
51 citations
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November 1988 in “The Journal of Clinical Endocrinology & Metabolism” Higher levels of a specific hormone are linked to more chest hair and acne in men.