21 citations
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September 2021 in “Fertility and Sterility” A blood test level of 3.2 ng/mL of Antimüllerian hormone is good for identifying polycystic ovarian morphology in European women aged 25–45.
77 citations
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June 2006 in “Best Practice & Research Clinical Endocrinology & Metabolism” The document concludes that accurate measurement of serum androgens is crucial for diagnosing hyperandrogenism.
46 citations
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November 2014 in “The Journal of Clinical Endocrinology & Metabolism” Men with isolated hypogonadotropic hypogonadism have partial steroid deficiencies, while those with panhypopituitarism have severe deficiencies.
September 2023 in “Journal of Cosmetic Dermatology” Lower vitamin D levels are linked to higher CRP levels in people with a type of hair loss called alopecia areata.
August 2025 in “DS Reviews of Research in Life Sciences” Women with PCOS have higher levels of DHEA, IL-6, and TNF-α.
June 2014 in “Toxicologie analytique et clinique/Annales de toxicologie analytique” Older age increases positive hair alcohol test results, and chest hair is a good alternative for testing; season affects results, with higher levels in winter.
1 citations
,
October 2020 in “IP Indian journal of clinical and experimental dermatology” Low serum ferritin levels are significantly linked to diffuse hair loss.
40 citations
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November 2011 in “American Journal of Human Biology” Stress from being transgender is linked to higher blood pressure at night and more inflammation, which may affect heart health.
6 citations
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February 2022 in “European journal of endocrinology” The method can measure multiple hormones in women's hair and may help identify hormone-related health issues.
29 citations
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January 2009 in “Gynecological Endocrinology” Women with PCOS have higher levels of certain blood clotting factors, suggesting a greater risk of cardiovascular issues.
January 2019 in “Türkiye klinikleri dermatoloji dergisi” Low levels of iron, ferritin, zinc, and folic acid may contribute to hair loss in women.
22 citations
,
June 1993 in “Calcified Tissue International” Women with hyperandrogenic amenorrhea have similar bone density to healthy women but lower than androgenized women without amenorrhea, and high DHEAS levels might affect bone density.
April 2021 in “Journal of evolution of medical and dental sciences” Women with PCOS have higher levels of certain androgens, which are good at predicting excess hair growth.
2 citations
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July 2022 in “Dermatology practical & conceptual” Iron deficiency anemia may contribute to hair loss in women with Telogen effluvium.
September 2025 in “Mansoura Journal of Chemistry” Blood and urine markers are important for diagnosing lupus in children.
56 citations
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October 2018 in “Journal of The American Academy of Dermatology” Androgens play a complex role in skin conditions like acne and hair loss in women, and normal blood levels don't always show true androgen status.
April 2010 in “DOAJ (DOAJ: Directory of Open Access Journals)” Improving iron levels can help reduce hair loss in females.
February 2024 in “Research Square (Research Square)” People today have lower levels of arsenic, lead, cadmium, and iron in their hair than people did 100 years ago.
47 citations
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November 2010 in “Vox Sanguinis” Iron supplements helped female blood donors with low iron avoid anaemia and return to donate again.
Higher cortisol levels might be linked to worsening keratoconus.
115 citations
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December 1996 in “PubMed” The safe daily selenium intake is up to 819 micrograms.
October 2022 in “The Egyptian Journal of Hospital Medicine” Females with idiopathic hirsutism have higher levels of omentin-1, which may lead to excessive hair growth.
1 citations
,
January 2016 in “INTAS POLIVET” High selenium levels in some areas cause health issues in cows and buffaloes, but blood tests remain normal.
Lower serum irisin levels are linked to androgenetic alopecia but not to insulin resistance.
1 citations
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September 2016 in “Brain Behavior and Immunity” Hair cortisol levels can indicate stress and are affected by washing frequency, not cosmetic treatments.
May 2024 in “Pakistan Journal of Health Sciences” Iron deficiency is linked to hair loss in CTE patients.
January 2024 in “International Journal of Trichology” PON1 levels might indicate hair loss severity, but other health factors can affect this.
May 2023 in “Animal Reproduction Update” High levels of cortisol in hair show long-term stress which can lower fertility in animals.
November 2025 in “Iraqi Journal of Science” Celiac patients may have kidney function risks due to increased urea and creatinine and decreased magnesium, zinc, and vitamin C.
September 2024 in “African Journal of Biomedical Research” Alopecia areata patients have lower vitamin D and slightly lower copper levels, so these should be checked.