September 2025 in “Indian Journal of Psychiatry” Valproic acid treatment may cause hair loss due to reduced biotinidase activity.
January 2023 in “Neuroscience applied” People with an imbalance between their cognitive and emotional empathy have lower levels of the hormone oxytocin in their hair.
Glycosylated keratin levels in hair can help identify the onset of insulin-dependent diabetes.
40 citations
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March 1982 in “British Journal of Dermatology” Young women with diffuse hair loss may have low SHBG levels, which could lead to more active testosterone and contribute to their hair loss.
7 citations
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August 2021 in “Heliyon” Phyllotex™ extract was found to significantly promote hair growth and protect against hair loss.
6 citations
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March 2015 in “European Journal of Public Health” Long-term hair dye use may increase testosterone levels in women.
4 citations
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July 2019 in “IOP conference series” Most young men with early gray hair have low vitamin D but normal iron levels.
3 citations
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January 2017 in “Indian journal of health sciences and biomedical research KLEU” Low iron levels are significantly linked to hair loss in women.
2 citations
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January 2009 The procedure reliably measures cortisol in rhesus macaque hair.
March 2024 in “Portuguese Journal of Dermatology and Venereology” People with hair loss often have lower levels of iron, vitamin D, and vitamin B12.
January 2017 in “International Journal of Trichology” Vitamin D supplements might help reduce hair fall.
January 2005 in “The Chinese Journal of Dermatovenereology” High fluoride increases damage in hair follicles, but low selenium can reduce this damage at lower fluoride levels.
December 2010 in “SciVee” May 2019 in “Case medical research”
January 2009 in “Elsevier eBooks” Low level laser therapy may help with hair loss.
January 2022 in “Advances in Clinical Medicine”
4 citations
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May 2021 in “Molecules” The hair test for vitamin D could be a useful alternative to blood tests, providing a longer-term vitamin D status, but more research is needed.
5 citations
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January 2021 in “PeerJ” Elephant tail-hair can show past stress levels, matching times when stressful events happened.
2 citations
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December 2021 in “Scientific reports” Scalp hair sweating is a significant predictor of hair cortisol levels.
May 2023 in “Journal of animal science/Journal of animal science ... and ASAS reference compendium” Cows that shed more hair in winter have better reproductive success and their calves weigh more at weaning.
4 citations
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April 2020 in “Journal of Cosmetic Dermatology” Low vitamin D levels are linked to different types of hair loss.
February 2025 in “Biomolecules” RORA boosts autophagy in hair follicle stem cells, potentially aiding hair growth.
227 citations
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January 1998 in “Journal of Endocrinology” Cells from balding scalps have more androgen receptors than cells from non-balding scalps.
23 citations
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January 2016 in “International Journal of Trichology” Women with female pattern hair loss have lower Vitamin D3 levels.
1 citations
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March 2020 in “Current Science” Most people in the surveyed area experience hair loss, but they are not aware of the role of diet, iron, hormones, genetics, and possibly water quality in causing it.
June 2025 in “OPAL (Open@LaTrobe) (La Trobe University)” The RHC complex with nicotinamide promotes hair growth and health.
June 2025 in “Frontiers in Bioengineering and Biotechnology” Recombinant collagen with nicotinamide boosts hair growth and health.
Low serum ferritin levels are linked to specific types of hair loss in women.
August 2016 in “Psychoneuroendocrinology” May 2013 in “DOAJ (DOAJ: Directory of Open Access Journals)” Women with hair loss have higher free testosterone levels.