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March 2001 in “European journal of endocrinology” Testosterone levels influence male behaviors and physical traits, but this relationship is complex and influenced by both internal and external factors.
5 citations
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March 1992 in “PubMed” Arsenic levels in rat hair reflect arsenic intake and accumulation in the body.
March 2011 in “European Urology Supplements” Blood tests for tumor cells could improve prostate cancer diagnosis and treatment; hair loss severity linked to a gene affecting prostate conditions.
January 2011 in “Nuclear Techniques” Lead levels in hair increased due to environmental exposure, while iron, copper, and zinc levels stayed stable.
January 2004 in “Chinese Journal of New Drugs and Clinical Remedies” The two finasteride tablet brands are bioequivalent.
January 2015 in “Indian Journal of Medical Biochemistry” Men with early balding should be checked for metabolic syndrome, as there's a link between the two.
13 citations
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September 1976 in “Archives of Environmental Health An International Journal” Bushman women have higher iron and zinc levels, while American mothers have more copper.
May 2013 in “DOAJ (DOAJ: Directory of Open Access Journals)” Women with hair loss have higher free testosterone levels.
1 citations
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June 2021 in “The Indonesian Biomedical Journal” Glycated hemoglobin is not as effective as the oral glucose tolerance test for diagnosing blood sugar problems in women with PCOS in Southern Iraq.
October 2006 in “Urology” Finasteride may help treat BPH by affecting certain biological markers.
1 citations
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January 2010 Finasteride is mainly broken down by the enzyme CYP3A4, affecting its levels in the body.
July 2023 in “International Journal of Pharmaceutical Sciences and Drug Analysis” The study found different absorbance values for simplex and complex homoeopathic hair oils when analyzed with a UV-visible spectrophotometer.
4 citations
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January 2012 in “Human health handbooks” Normal iron levels are crucial for healthy skin, hair, and nails.
15 citations
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January 2015 in “Stem cells international” Human hair follicle stem cells can be turned into red blood cells.
5 citations
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December 2017 in “Atom Indonesia” Workers exposed to certain jobs have higher levels of heavy metals in their hair.
June 2025 in “International Journal of Science and Research (IJSR)” Low iron and vitamin D are common in young females with hair loss.
66 citations
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October 1987 in “The Journal of clinical endocrinology and metabolism/Journal of clinical endocrinology & metabolism” Measuring androstanediol glucuronide in blood is useful for assessing and tracking treatment in women with excessive hair growth.
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October 2011 in “Faṣlnāmah-i bīmārīhā-yi pūst” Iron and ferritin levels don't affect alopecia areata.
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January 1984 in “Nutrition reports international” 55 citations
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February 1990 in “Journal of Nutrition” Selenium in hair and nails is higher with L-selenomethionine and low methionine.
June 2024 in “Benha Journal of Applied Sciences” Serum IMA levels may be linked to premature hair graying and erectile dysfunction.
June 2023 in “Zenodo (CERN European Organization for Nuclear Research)” Neutropenic patients show significant changes in immune cell types and lower neutrophil and natural killer cell percentages.
November 2025 in “Věda a perspektivy” November 2025 in “Communications Biology” Human hair contains many different molecules that change along its length, influenced by personal care products.
103 citations
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June 2006 in “British journal of sports medicine” The document concludes that better biomarkers are needed to detect long-term oral testosterone use in athletes.
9 citations
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March 2019 in “European Journal of Sport Science” New signs like changes in blood markers, physical symptoms, and behavioral shifts may help detect hidden steroid use in athletes.
18 citations
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April 2009 in “Journal of Chromatography A” Detecting steroid esters in cattle hair is inconsistent and influenced by sampling factors.
Current microbial test methods for hair cosmetics need revision due to strong bacteriostasis.
46 citations
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February 1983 in “The Journal of Dermatology” Hair regrowth slows with age due to changes in enzyme activity.
11 citations
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September 1990 in “Clinical Endocrinology” Girls with prepubertal simple hypertrichosis have higher dihydrotestosterone (DHT) levels.