October 2008 in “Trace Elements and Electrolytes” Tailored supplementation of calcium, magnesium, and vitamin D based on hair analysis may improve bone health.
April 2008 in “Faculty Opinions – Post-Publication Peer Review of the Biomedical Literature” The vitamin D receptor helps control hair growth and may protect against certain skin tumors.
Azelaic acid and vitamin B6 together may improve hair growth.
Calcium and magnesium levels in hair decrease after taking supplements, indicating early metabolic changes in perimenopausal women.
The vitamin D receptor has many roles in the body beyond managing calcium, affecting the immune system, hair growth, muscles, fat, bone marrow, and cancer cells.
March 2006 in “The FASEB Journal” Vitamin D receptor is essential for adult hair growth.
September 2005 in “CRC Press eBooks” Vitamin D is important for skin cell growth and health, and its active form and receptor play key roles in skin and hair processes.
January 2005 in “Chinese Journal of Reproductive Health” Vitamin-D and calcium effectively treat hair loss in children.
January 2005 in “mediaTUM – the media and publications repository of the Technical University Munich (Technical University Munich)” Vitamin D and glucocorticoids affect bone growth, metabolism, and immune response.
October 2004 in “Radiotherapy and oncology” Active vitamin D3 might protect hair follicles from radiation damage.
May 2004 in “Journal of steroid biochemistry and molecular biology/The Journal of steroid biochemistry and molecular biology” Vitamin D affects Msx1 protein expression and may influence mineralized tissue health.
October 1990 in “Pediatric Research” Nocturnal calcium infusions improved a boy's severe rickets without causing hair loss.
Excessive vitamin A intake caused severe health issues that mostly resolved after stopping the intake.
May 1961 in “Tumori Journal” Vitamin A treatment reduced abnormal cell growth and improved skin conditions in rats with tumors.
March 1942 in “The Science News-Letter” 
June 1937 in “Science news-letter/Science news letter” Vitamin B can prevent hair from turning gray in rats.
September 2021 in “Journal of advances in medicine and medical research” Low Vitamin D levels are linked to female hair loss.
July 2021 in “Journal of pharmaceutical research international” Most women with female pattern hair loss have low vitamin D levels.
July 2021 in “PARIPEX INDIAN JOURNAL OF RESEARCH” Men with early baldness often have low vitamin D levels.
December 2020 in “The Medical journal of Basrah University” Low vitamin D levels may contribute to female pattern hair loss.
1 citations
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February 2022 in “Journal of the American Academy of Dermatology” Taking biotin supplements can be risky and often lacks evidence of effectiveness for skin, hair, and nail issues.
January 2025 in “Global Health” People with type 2 diabetes have lower vitamin E levels, especially older adults and females.
10 citations
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January 2013 in “TURKISH JOURNAL OF MEDICAL SCIENCES” Low vitamin D levels can lead to increased parathyroid hormone levels.
July 2025 in “Insights-Journal of Health and Rehabilitation” Adding vitamin D to metformin lowers blood sugar more than metformin alone in type 2 diabetes.
July 2025 in “JAAD Case Reports” 
June 2023 in “Italian journal of dermatology and venereology” The oral supplement improved hair loss in patients with telogen effluvium.
13 citations
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December 1940 in “The journal of nutrition/The Journal of nutrition” Lack of certain vitamins causes fur loss and greying in silver foxes.
April 2026 in “International Journal of Engineering Research and Science & Technology” The system helps identify vitamin deficiencies early by analyzing symptoms.
November 2022 in “Gene Cell and Tissue” Zinc deficiency might affect vitamin B12 levels.
378 citations
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February 2020 in “Nature Reviews Endocrinology”