December 2021 in “Dermatology research” Low levels of vitamin B12, ferritin, and calcium are linked to premature graying of hair.
December 2019 in “bioRxiv (Cold Spring Harbor Laboratory)” Redheaded people have higher levels of a vitamin D precursor, suggesting red hair may be an adaptation for better vitamin D synthesis in areas with less sunlight.
32 citations
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September 2016 in “Dermatologic Surgery” The evidence for using Low-Level Laser Therapy for hair loss is limited and more thorough research is needed.
June 2024 in “Cermin Dunia Kedokteran” Low level laser therapy is effective and safe for various skin and hair conditions.
38 citations
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January 2023 in “International Journal of Medical Sciences” Red-light therapy may slow myopia progression better than traditional treatments.
13 citations
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April 2022 in “Frontiers in oncology” Melanoma development can be linked to the breakdown of skin's melanin-producing units.
11 citations
,
January 2011 in “Turkish Journal of Medical Sciences” Low iron levels are a significant risk factor for hair loss, while high vitamin D levels might be a response to hair loss, not a cause.
5 citations
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June 2020 in “Experimental dermatology” Redheaded people may have evolved to efficiently make vitamin D in areas with less sunlight.
January 2026 in “International Journal of Pharmaceutical Quality Assurance” Alopecia Areata patients have low zinc and high copper levels.
11 citations
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September 2012 in “Journal of animal physiology and animal nutrition” Higher protein diets with DL-methionine improve mink hair growth and fur quality.
November 2025 in “Biological Trace Element Research” Hair mineral analysis doesn't reliably show blood mineral levels but may help track long-term mineral trends.
16 citations
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October 2015 in “Photochemistry and photobiology” Reducing copper (II) ion levels in hair can decrease hair damage.
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.
1 citations
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March 2019 in “Chinese Medical Journal” Researchers identified potential markers for human hair color stem cells.
January 2023 in “Pakistan Armed Forces Medical Journal” People with vitiligo tend to have lower vitamin D levels.
7 citations
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March 2016 in “Journal of Cosmetic and Laser Therapy” Home-use lasers and IPL devices are unlikely to directly cause paradoxical hair growth; it may be linked to inflammation or hormonal issues.
7 citations
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January 2016 in “Hair therapy & transplantation” People with early graying hair often have lower levels of iron, ferritin, and calcium.
4 citations
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March 2018 in “PloS one” Men with less sun-sensitive skin have lower PSA levels, while men with more sun-sensitive skin have higher PSA levels.
3 citations
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December 2018 in “Meta Gene” Certain gene variations increase male hair loss risk, influenced by hormone levels.
4 citations
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December 2020 in “Mammalian genome” Harlequin mutant mice have hair loss due to low AIF protein levels and retroviral element activity.
2 citations
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November 1998 in “Journal of The European Academy of Dermatology and Venereology” Prednisone reduces organ mast cell infiltration but does not alter the abnormal appearance of mast cells in systemic mastocytosis.
May 2026 in “Archives of Dermatological Research” Genetics likely cause premature graying hair, not vitamin levels.
9 citations
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February 2022 in “BMC Genomics” Melatonin affects gene expression in goat hair follicles, potentially increasing cashmere production.
May 2025 in “Veterinary Medicine and Science” Melatonin improved reproductive function in male Pomeranian dogs with Alopecia X, but more research is needed.
53 citations
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July 1981 in “Journal of Endocrinology” α-MSH and cyclic AMP boost melanin production, while cyclic GMP and melatonin reduce it.
18 citations
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March 2015 in “Journal of Investigative Dermatology” Silencing certain circadian clock genes increases skin pigmentation.
5 citations
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April 2022 in “Journal of Chromatography B” The new method can measure sleep-related hormones in hair effectively and could help track long-term sleep patterns.
February 2025 in “BMC Genomics” Melatonin improves cashmere quality and yield in goats by enhancing hair follicle development.
1 citations
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December 2005 in “Al-Mağallaẗ al-ʻirāqiyyaẗ li-l-ṣaydalaẗ” Melatonin reduced oxidative stress and might improve hair growth in alopecia areata patients.
November 2024 in “Genomics” Melatonin boosts hair growth in cashmere goats by helping certain cells multiply.