13 citations
,
December 2016 in “Egyptian Journal of Basic and Applied Sciences” Alopecia areata patients have lower vitamin D levels than healthy individuals.
1 citations
,
January 2010 in “Springer eBooks” Certain micronutrients may improve hair and nail health, but more research is needed to confirm their benefits.
Skin tumor cells in patients with tuberous sclerosis have higher levels of a protein called cathepsin B.
January 2004 in “Trace Elements Science” Diabetics have lower chromium, manganese, and copper, but higher iron in their hair.
6 citations
,
June 2011 in “British Journal of Dermatology” People with alopecia areata have higher levels of RBP4 protein and antibodies against it.
June 2017 in “Journal of clinical and investigative dermatology” Red blood cell folate levels are reliable indicators of long-term folate status in alopecia areata patients.
November 2024 in “SKIN The Journal of Cutaneous Medicine” Baricitinib slightly increased cholesterol levels in alopecia areata patients, but these changes were manageable.
October 2020 in “Our Dermatology Online” Skin changes and high vitamin B12 levels can be early signs of cancer.
January 2025 in “The International Journal of Gastroenterology and Hepatology Diseases” Vitamin B12 is crucial for hair and nerve health, and its malabsorption can cause hair loss and nerve damage.
1 citations
,
August 2023 in “JAMA Dermatology” Increasing the dose of baricitinib to 4 mg helps more patients with severe alopecia areata regrow hair.
October 2025 in “Electronic Theses and Dissertations Repository (University of Pisa)” Baricitinib effectively treated alopecia areata in 73% of patients, with minor metabolic changes and significant changes in inflammatory markers.
2 citations
,
May 2022 in “Diagnostics” Vitamin D levels in hair don't match those in blood, so hair isn't a reliable indicator of Vitamin D status.
36 citations
,
June 2012 in “Alcoholism Clinical and Experimental Research” People with decreased kidney function have higher levels of ethyl glucuronide in their hair.
66 citations
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January 1987 in “Journal of Investigative Dermatology” Coal tar shampoo increases enzyme activity in hair follicles, enhancing carcinogen binding to DNA.
June 2025 in “Current Issues in Molecular Biology” Minoxidil, caffeine, and biotin can improve hair shine by restoring certain genes.
January 2004 in “Weiliang yuansu yu jiankang yanjiu” Diabetics have lower chromium, manganese, and copper, but higher iron in their hair.
May 2023 in “Pharmaceuticals” Three specific mutations in the LIPH gene can cause hair loss by damaging the protein's structure and function.
9 citations
,
January 2006 in “Cutaneous and ocular toxicology” L-cystine, D-pantothenat, and miliacin together significantly boost keratinocyte growth and metabolism.
Certain gene variations and different levels of BDNF and CRH hormones are linked to vitiligo.
1 citations
,
January 2013 in “Nasza Dermatologia Online” Vitamin B12 deficiency can cause reversible hair color loss in children.
January 2021 in “Turkiye Klinikleri Journal of Dermatology” Many young men with hair loss have low levels of vitamin D and B12.
6 citations
,
June 1976 in “Journal of Investigative Dermatology”
September 2025 in “Cutaneous and Ocular Toxicology” Micronutrient levels and thyroid function likely don't affect scarring alopecias.
February 2022 in “Global academic journal of medical sciences” People with alopecia areata have much lower Vitamin-D levels than healthy individuals.
April 2018 in “Journal of Investigative Dermatology” Higher levels of nidogen1 and type IV collagen are found in basal cell carcinoma compared to normal skin.
September 2017 in “Hair transplant forum international” Biotin is popular for hair loss, but there's little scientific proof it works.
July 2023 in “Drug testing and analysis (Print)” Homemade hair treatments can significantly lower drug levels in hair, possibly causing false-negative drug tests.
10 citations
,
June 2013 in “International Journal for Vitamin and Nutrition Research” High hair calcium levels are linked to low calcium intake and low bone density.
37 citations
,
January 2010 in “Human Molecular Genetics” FTase and GGTase-I are essential for skin keratinocyte health.
4 citations
,
December 2018 in “Macedonian Journal of Chemistry and Chemical Engineering” A new method accurately measures amino acids in treated hair, showing bleaching reduces amino acids while protein treatments increase them.