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.
5 citations
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August 1987 in “Andrology” Men with low or no sperm count have lower salivary testosterone levels, and saliva testing can measure their testosterone well.
9 citations
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January 2014 in “Journal of analytical & bioanalytical techniques” The study did not conclude whether hair can reliably indicate kidney stones, cholelithiasis, hypertension, or diabetes.
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.
June 2020 in “Journal of Investigative Dermatology” FDA-cleared devices often fail to produce high-quality platelet-rich plasma consistently.
1 citations
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January 1985 in “IRIS UNIMORE (University of Modena and Reggio Emilia)” December 2025 in “Neurobiology of Stress” People who recently attempted suicide during depression showed signs of adrenal fatigue, but had higher DHEA levels around the attempt time.
9 citations
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November 2015 in “Gynecological Endocrinology” Different types of PCOS in Chinese Han women show varying levels of male hormone and metabolic issues.
1 citations
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May 2022 in “Reproductive Endocrinology” Accurate diagnosis and treatment of hyperandrogenism in women require comprehensive evaluation of symptoms and hormone levels.
May 2021 in “Journal of the Endocrine Society” A woman's hair loss and other symptoms were due to a rare hormone deficiency treatable with steroids.
21 citations
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January 2014 in “Dermatology Research and Practice” Hair and serum levels of zinc, copper, and iron are similar in people with alopecia areata and healthy individuals.
8 citations
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June 1981 in “Clinica Chimica Acta”
October 2013 in “Journal of the American College of Cardiology” Blood pressure that doesn't drop at night is linked to worse blood vessel function in people with high blood pressure.
December 2020 in “Benha Journal of Applied Sciences” People with severe acne tend to have higher levels of betatrophin.
6 citations
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June 2011 in “Journal of The American Academy of Dermatology” Iron deficiency might be linked to hair loss, but more research is needed.
January 2020 in “Turkiye Klinikleri Journal of Dermatology” People with chronic hair shedding had much lower vitamin D levels compared to healthy people.
7 citations
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July 1979 in “Archives of Dermatology” Patients with renal disease should be cautious with vitamin A supplements due to risk of toxicity.
5 citations
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March 2020 in “Aids Reviews” Hair antiretroviral concentration is affected by hair type, segment position, housing, drug use, sexual behavior, kidney function, and genetics.
4 citations
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December 1962 in “European journal of endocrinology” Alloxan diabetes, methylthiouracil, cortisone, and adrenaline affect how white mice hair follicles use glucose and cystine and their cell division.
13 citations
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December 2016 in “Egyptian Journal of Basic and Applied Sciences” Alopecia areata patients have lower vitamin D levels than healthy individuals.
217 citations
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July 2009 in “Experimental and Clinical Endocrinology & Diabetes” Hair analysis can track past cortisol levels in Cushing's Syndrome patients.
November 2025 in “Khalij-Libya Journal of Dental and Medical Research” Hair loss is linked to low levels of zinc, vitamin D, and ferritin.
January 1992 in “Journal of Oriental Neuropsychiatry” People with schizophrenia have lower zinc, copper, and chromium in their hair.
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 2017 in “Indian Journal of Dermatology, Venereology and Leprology” 20 citations
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February 1968 in “Journal of Histochemistry & Cytochemistry” A new test more accurately detects citrulline in hair follicles and pilomatrixomas.
6 citations
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June 2017 in “Reproductive Biomedicine Online” Chinese women with PCOS have higher androgen levels, which change with age and weight.
11 citations
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October 2020 in “General and comparative endocrinology” Male C57BL/6 mice show age-related fluctuations in certain hormones and their ratios in both blood and hair.
25 citations
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June 1998 in “Biological Trace Element Research” Young women with diabetic parents have high zinc and low copper levels.
Low serum ferritin levels are linked to specific types of hair loss in women.