10 citations
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January 2012 in “International Journal of Trichology” The study found no link between anxiety, vitamin B12, folate, TSH, ferritin, zinc levels, and trichodynia in telogen alopecia patients.
May 2013 in “DOAJ (DOAJ: Directory of Open Access Journals)” Women with hair loss have higher free testosterone levels.
9 citations
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June 2014 in “European Journal of Obstetrics & Gynecology and Reproductive Biology” Blood AMH levels are higher in women with PCOS than in those with other similar conditions.
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.
April 2022 in “PANACEA JOURNAL OF MEDICAL SCIENCES” People with both obvious and not-so-obvious underactive thyroid issues often have higher levels of the hormone prolactin.
November 2023 in “International Journal of Trichology” No significant link between hair loss and iron or thyroid levels was found, but checking for deficiencies might still be useful.
7 citations
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January 2022 in “Evidence-based complementary and alternative medicine” Ginger supplements helped reduce symptoms and improve metabolic health in hypothyroid patients.
September 2025 in “Online Türk Sağlık Bilimleri Dergisi” Low zinc and folate levels are linked to hair loss in children.
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.
1 citations
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December 2020 in “Harran Üniversitesi týp fakültesi dergisi” Many people with hair loss had low iron and ferritin levels.
2 citations
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August 2020 in “Dermatologic Therapy” Low ferritin and zinc levels, as well as anemia, are linked to more severe hair loss in Egyptian children with chronic hair shedding.
September 2020 in “University of Thi-Qar Journal of Medicine” Low iron and vitamin D3 levels might be major causes of hair loss in Iraqi women.
December 2013 in “대한피부과학회지” Korean women with female pattern hair loss have higher levels of ferritin, testosterone, and vitamin D than average.
January 2015 in “Turkiye Klinikleri Journal of Endocrinology” PCOS patients with autoimmune thyroid disease have lower DHEAS levels.
April 2025 in “Journal of the Faculty of Medicine Baghdad” Alopecia areata patients may have higher T3 and cortisol levels, suggesting a hormonal link.
Injecting patients' own PRP into their thyroid improved thyroid function and symptoms in most hypothyroidism cases.
25 citations
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January 2022 in “Endocrine journal” Long COVID patients may have hormonal imbalances linked to their symptoms.
3 citations
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January 2013 Hypothyroidism in dogs is usually caused by immune system issues or gland atrophy, affects middle-aged purebreds most, and is treatable with medication.
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 2021 in “Journal of pharmaceutical research international” The conclusion is that hirsutism is strongly linked to PCOS and higher levels of certain hormones, but not to DHEAS, prolactin, cortisol, or TSH.
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.
January 2024 in “University of Zagreb University Computing Centre (SRCE)” Women with PCOS have different hormone levels than those without it.
78 citations
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November 2008 in “Fertility and Sterility” Amenorrhea is relatively rare and initial testing should check FSH, TSH, and prolactin levels.
5 citations
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September 2021 in “Journal of cosmetic dermatology” People with alopecia areata often have abnormal thyroid hormones, thyroid antibodies, antinuclear antibodies, low vitamin D, and high C-reactive protein levels.
2 citations
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September 2025 in “Scientific Reports” Women with PCOS are more likely to have thyroid antibodies than those without.
2 citations
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January 2014 in “Journal of Integrated Health Sciences” Obesity is strongly linked to the severity of hirsutism in women.
December 2020 in “Journal of Drugs in Dermatology” The document concludes that more research is needed to confirm if blood tests for things like iron and vitamin D are helpful for hair loss from Telogen effluvium.
February 2021 in “PARIPEX INDIAN JOURNAL OF RESEARCH” Women with PCOS, especially if they are obese, are more likely to have an underactive thyroid than women without PCOS.
November 2023 in “Ibrahim Cardiac Medical Journal” Alopecia areata patients are more likely to have thyroid disorders than healthy individuals.
1 citations
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December 2018 in “Veterinary dermatology” The hair coat disorder in Schipperkes is similar to Alopecia X and involves increased androstenedione levels and hair cycle arrest.