January 2004 in “DOAJ (DOAJ: Directory of Open Access Journals)” Men with androgenetic alopecia do not have elevated DHEA-S levels.
January 2001 in “Biomedical Research” THH and PAD type III appear together early in hair growth, but deiminated THH appears later, suggesting another factor is involved.
32 citations
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January 1966 in “Archives of Dermatology” The method accurately measures hair growth with minimal risk and is better than other techniques.
April 2023 in “Cancer Research” Plucked hair can effectively monitor drug effects in cancer treatment.
February 2023 in “American Journal of Biomedical and Life Sciences” Hair analysis can effectively assess nutritional status.
April 2016 in “Journal of The American Academy of Dermatology” Alopecia areata affects quality of life more than androgenetic alopecia.
2 citations
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January 2005 in “PubMed” Women with excessive body hair often have higher male hormones and related health issues.
1 citations
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August 2023 in “Journal of Investigative Dermatology” 7 citations
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April 2022 in “Journal of pharmaceutical and biomedical analysis” The method can measure multiple steroids in human hair to study long-term steroid metabolism, especially in newborns and children.
28 citations
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August 2003 in “Steroids” Hirsute women have lower type 2 17β-HSD enzyme levels, which improve with treatment.
September 2010 in “Advances in Dermatology and Allergology/Postępy Dermatologii i Alergologii” TrichoScan is reliable for counting and measuring hair density but may not accurately assess hair types in women with hair loss.
41 citations
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May 2005 in “International Journal of Cosmetic Science” Human hair contains various lipids that vary among individuals and help protect the hair.
2 citations
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July 2024 in “Journal of Cosmetic Dermatology” The HAIR-Q is a reliable tool for assessing patient satisfaction with hair loss treatments.
72 citations
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February 1990 in “British Journal of Clinical Pharmacology” Hair analysis can track haloperidol dosage history.
30 citations
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April 2011 in “Rapid communications in mass spectrometry/RCM. Rapid communications in mass spectrometry” Analyzing hair with this method can help understand and monitor scalp conditions and treatment effects.
65 citations
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May 2006 in “Journal of Investigative Dermatology” Dexamethasone may influence hair growth by altering estrogen receptor activity in hair cells.
9 citations
,
December 1958 in “Journal of Investigative Dermatology”
3 citations
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January 2021 in “Hair transplant forum international” The Hair Diameter Index (HDI) was created to help plan hair restoration surgery after finding that visual hair density is linked to hair count and thickness, not volume.
November 2022 in “Innovation in aging” Older adults in Puerto Rico often couldn't be tested for hair cortisol due to refusal or lack of hair, with race and hair products affecting results.
23 citations
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May 2005 in “British Journal of Cancer” Plucked human hair can be used to study drug effects on certain cell markers.
23 citations
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January 2020 in “Frontiers in Pharmacology” Dihydrotestosterone affects hair growth by changing the Wnt/β-catenin pathway, with low levels helping and high levels hindering growth.
November 2025 in “Communications Biology” Human hair contains many different molecules that change along its length, influenced by personal care products.
82 citations
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January 2000 in “Hormone Research in Paediatrics” DHEA stimulates skin oil glands and could help postmenopausal women, with potential for acne and excessive hair growth treatments.
December 2023 in “International Journal of Medical Sciences And Clinical Research” Dermoscopy is a useful tool for diagnosing female pattern hair loss.
18 citations
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May 2010 in “Zentralblatt für Veterinärmedizin Reihe A” Hair zinc levels don't reliably indicate overall zinc status in animals.
January 2026 in “Phaidra - Repository of the University of Veterinary Medicine, Vienna” Hair cortisol levels in wolves reflect stress and vary by season and body region.
1 citations
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October 2020 Hair can reliably measure average estradiol levels over months in humans and monkeys.
June 2019 in “DOAJ (DOAJ: Directory of Open Access Journals)” Trace element deficiencies may contribute to diffuse alopecia.
2 citations
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June 2012 in “Journal of Dermatological Science” The gene HDC is important for the development of hair follicles in newborn mice.
May 2009 in “Faculty Opinions – Post-Publication Peer Review of the Biomedical Literature” DHEA therapy improved pubic hair growth and psychological well-being in young females with adrenal insufficiency.