78 citations
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January 2017 in “Skin appendage disorders” Biotin supplements may improve hair and nail growth in people with certain deficiencies or conditions, but there's not enough evidence to recommend it for healthy individuals.
19 citations
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July 2015 in “Journal of inherited metabolic disease” Methionine restriction works better than betaine for treating CBS deficiency symptoms in mice.
5 citations
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March 2008 in “DMW - Deutsche Medizinische Wochenschrift” A man was poisoned with thallium, treated successfully, but still had some nerve issues after 6 months.
November 2025 in “Journal of Investigative Dermatology” Dithranol reduces inflammation in alopecia areata by lowering certain immune responses.
7 citations
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March 2012 in “Journal of Investigative Dermatology” Some thymic peptides can increase human hair growth, while others may inhibit it.
3 citations
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February 2013 in “Actas dermo-sifiliográficas/Actas dermo-sifiliográficas” A 6-year-old boy developed excessive hair growth after taking diazoxide for low blood sugar.
January 2011 in “대한피부과학회지” A 7-year-old girl was diagnosed with trichothiodystrophy due to low sulfur levels in her hair.
43 citations
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October 1955 in “The journal of nutrition/The Journal of nutrition” Germ-free rats need biotin for growth and have different vitamin metabolism compared to regular rats.
September 2019 in “PubMed” The conclusion suggests using a science-based, multi-targeted treatment for hair loss instead of just biotin.
January 2016 in “DSpace - FIRAT (Fırat University)” 27 citations
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November 2000 in “Journal of Veterinary Medicine Series B” Iodine deficiency in lambs causes poor growth, less wool, and delayed sexual maturity.
33 citations
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August 1993 in “FEBS Letters” A new enzyme in rats may help regulate hair growth.
December 2025 in “Molecules” DPP may help hair regrowth by improving blood vessel function under stress.
March 2019 in “Reactions Weekly”
9 citations
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September 2018 in “Journal of Photochemistry and Photobiology B-biology” A hair-growth formula with cystine and thiamin helps protect skin cells against UV damage and improves their growth.
54 citations
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July 1967 in “Science” Decomposed tritiated thymidine is less accurate for DNA tracing, and hair changes can indicate malnutrition.
7 citations
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February 2012 in “British Journal of Dermatology” TH antibodies in vitiligo and AA patients recognize the same protein parts.
70 citations
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February 2009 in “Biological Trace Element Research”
16 citations
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January 2008 in “Acta dermato-venereologica” Vitamin B12 deficiency can cause skin darkening and increased blood vessels, but treatment can improve symptoms.
March 2000 in “Preventive Nutrition and Food Science” Whalgichan improved hair growth, reduced hair loss, and enhanced cholesterol and lipid metabolism without side effects.
27 citations
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July 1993 in “The journal of investigative dermatology/Journal of investigative dermatology”
6 citations
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January 2013 in “Chemical & pharmaceutical bulletin/Chemical and pharmaceutical bulletin” A new compound shows promise as a topical treatment for hair loss.
2 citations
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July 2014 in “Our Dermatology Online” Contact immunotherapy can cause vitiligo in patients with autoimmune conditions.
GV-350 improves hair growth and quality of life in iron-deficient women without side effects.
April 2026 in “Global Journal of Health Science” Micronutrient deficiencies are common in hypothyroidism-related hair loss, so monitoring these nutrients may help manage hair health.
43 citations
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March 1942 in “The Journal of experimental medicine/The journal of experimental medicine” Mice need pantothenic acid to make inositol.
8 citations
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July 2017 in “Biochemical and biophysical research communications” A new compound, BOI, can help hair grow by changing hair cycle phases and increasing certain cell contents.
July 2025 in “JAAD Case Reports”
8 citations
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January 2007 in “Hair transplant forum international” Vitamin B12 improves the health and growth of hair micrografts.
10 citations
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March 1973 in “Journal of Investigative Dermatology”