12 citations,
January 2016 in “Endocrinology, diabetes & metabolism case reports” Testosterone therapy improved physical and social health in a male with 49,XXXXY syndrome.
December 2020 in “International journal of research in ayurveda and pharmacy” Eating well and avoiding synthetic hair products are key for healthy hair.
May 2022 in “Endocrine practice” High-dose biotin can cause false thyroid test results; stop taking biotin two days before testing to avoid errors.
21 citations,
January 2009 in “Indian journal of dermatology, venereology, and leprology” Vitamin B12, folate, ferritin, and iron levels are not linked to alopecia areata.
March 2020 in “The Thai Journal of Veterinary Medicine” A Thai Bangkaew dog with diabetes and pancreatic issues improved with insulin, enzymes, and vitamins.
July 2018 in “International journal of clinical & experimental dermatology” Eat a balanced diet for healthy hair; only use supplements if you have a proven nutrient deficiency.
January 2024 in “İstanbul Kuzey Klinikleri” Low ferritin levels are linked to increased hair loss; no link found between vitamin B12, TSH levels, and hair loss.
March 2019 in “Evidence Based Women Health Journal (Online)” Vitamin D supplements increased ovulation rates in women with PCOS who were vitamin D deficient.
5 citations,
May 2020 in “Diagnostics” Lower zinc levels may predict less effective hair loss treatment.
35 citations,
January 2013 in “International Journal of Trichology” Kids with early graying hair often have low levels of calcium, ferritin, and vitamin D3.
7 citations,
June 2020 in “Experimental dermatology” Researchers found that certain lipids, especially vitamin D3, are lower in prematurely grey hair than in pigmented hair.
24 citations,
August 2009 in “Expert opinion on pharmacotherapy” The combination of calcipotriene and betamethasone is more effective and has fewer side effects for treating psoriasis.
18 citations,
March 2016 in “Journal of Investigative Dermatology” Vitamin D and calcium are essential for normal hair growth.
13 citations,
April 2018 in “Journal of The American Academy of Dermatology” People with certain types of hair loss, especially lichen planopilaris and telogen effluvium, as well as African Americans, Asians, and men, are more likely to have severe vitamin D deficiency.
24 citations,
November 2008 in “Arquivos Brasileiros de Endocrinologia & Metabologia” Four patients with a type of rickets and hair loss had different mutations in their vitamin D receptor gene, causing it to not work properly.
Low vitamin D3 and ferritin levels may cause hair loss in pregnant women.
20 citations,
November 2008 Vitamin D is important for regulating calcium, phosphate, and hair health.
9 citations,
September 2020 in “Journal of cosmetic dermatology” A woman developed vitiligo from repeated eyebrow microblading.
2 citations,
November 2017 in “PloS one” Some vitamin D analogs can thicken skin and reduce pore size like a common acne treatment, with one analog also affecting skin growth factors.
148 citations,
October 2008 in “The journal of investigative dermatology/Journal of investigative dermatology” Mice without the vitamin D receptor are more prone to UV-induced skin tumors.
104 citations,
August 2008 in “Clinics in Dermatology” Treating psoriasis on the scalp, nails, and skin folds is challenging, often requiring systemic treatments for severe cases, with some success in topical and biologic treatments.
9 citations,
January 1981 in “Australian journal of biological sciences” Lambs fed a liquid diet showed abnormal wool and skin, which improved with more B-vitamins, suggesting a link to B-vitamin deficiency.
8 citations,
March 2011 in “Endocrine” A new gene mutation causes vitamin D-resistant rickets and hair loss in two siblings.
June 1937 in “Science news-letter/Science news letter” Vitamin B can prevent hair from turning gray in rats.
110 citations,
November 1984 in “The American Journal of Medicine” A genetic defect in vitamin D receptors causes severe rickets and hair loss in children, but some heal as they age.
April 2024 in “Jurnal Agroindustri Halal/Jurnal agroindustri halal” The hair tonic with the highest seaweed extract content showed the best hair growth results.
28 citations,
March 1986 in “The American journal of medicine” Too much vitamin A can cause liver damage and skin issues.
30 citations,
April 2018 in “Experimental Dermatology” The article concludes that developing in vitro models for human hair structures is important for research and reducing animal testing, but there are challenges like obtaining suitable samples and the models' limitations.
Biotin does not significantly help with hair growth.
September 2024 in “Cosmoderma” Biotin doesn't help hair growth in healthy people and can cause health risks if overused.