77 citations
,
August 1986 in “Archives of Dermatology” Vitamin B12 deficiency can cause skin and hair color changes, which are reversible with treatment.
16 citations
,
February 2008 in “PubMed” Vitamin B12 deficiency can cause skin darkening and white hair, but it's reversible.
16 citations
,
January 2008 in “Acta dermato-venereologica” Vitamin B12 deficiency can cause skin darkening and increased blood vessels, but treatment can improve symptoms.
11 citations
,
August 1986 in “Archives of Dermatology” Vitamin B12 deficiency can cause skin and hair color changes, which can be reversed with treatment.
5 citations
,
August 2015 in “Sultan Qaboos University medical journal” Vitamin B12 deficiency can cause skin darkening and other symptoms, which improve with B12 supplements.
4 citations
,
March 2020 in “JAAD Case Reports” Vitamin B12 deficiency can cause darkening of all nails.
2 citations
,
October 2016 in “Nutrition in clinical practice” Vitamin B12 deficiency can cause facial dark spots that go away with treatment.
1 citations
,
January 2013 in “Nasza Dermatologia Online” Vitamin B12 deficiency can cause reversible hair color loss in children.
August 2024 in “Journal of the Association of Physicians of India” Adding vitamin B12 to food like salt can effectively improve vitamin levels in rural areas.
May 2024 in “Journal of ayurveda and integrated medical sciences” Amra Beej Majja Churna may help improve Vitamin B12 levels and symptoms in vegans.
April 2024 in “International Journal of Advanced Research” Vitamin B12 deficiency is linked to hair loss and skin pigmentation changes.
July 2021 in “PARIPEX INDIAN JOURNAL OF RESEARCH” Knuckle darkening can be an early sign of vitamin B12 deficiency.
October 2025 in “International Journal For Multidisciplinary Research” Ayurvedic treatment improved Vitamin B12 levels and symptoms.
October 2024 in “INTERNATIONAL JOURNAL OF SCIENTIFIC RESEARCH” Trichoscopy can help diagnose Vitamin B12, Vitamin D3, and ferritin deficiencies without blood tests.
November 2022 in “Gene Cell and Tissue” Zinc deficiency might affect vitamin B12 levels.
August 2022 in “International Journal of Health Sciences (IJHS)” Low levels of zinc, ferritin, and vitamin B12 are linked to severe hair loss in pregnant women during their last two trimesters.
17 citations
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December 1951 in “Experimental biology and medicine” Vitamin B12 and aureomycin can reverse or reduce cortisone's negative effects on body and hair growth in rats.
September 2020 in “Osmangazi tıp dergisi” Thyroid dysfunction, vitamin D and B12 deficiencies, and iron deficiency may be linked to hair loss condition Telogen Effluvium.
January 2019 in “Kocaeli tıp dergisi” People with chronic hair loss may have a higher chance of Vitamin B12 deficiency.
16 citations
,
January 2017 in “DOAJ (DOAJ: Directory of Open Access Journals)” Low levels of vitamin B12 and ferritin are linked to early hair graying.
July 2025 in “Humanitarian and Natural Sciences Journal” Low vitamin D and ferritin levels may contribute to hair loss in women.
June 2025 in “International Journal of Science and Research (IJSR)” Low iron and vitamin D are common in young females with hair loss.
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.
2 citations
,
December 2015 in “Journal of dermatology research and therapy” People with Chronic Telogen Effluvium mainly have lower iron levels compared to healthy individuals.
1 citations
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April 2021 in “International Journal of Research in Dermatology” Low iron and vitamin B12 levels are common in women with chronic hair loss, while low vitamin D is less common.
January 2018 in “International journal of medical biochemistry” Women with telogen effluvium have lower levels of iron, folate, and vitamin B12.
25 citations
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January 2017 in “International Journal of Trichology” Most Indian people with hair loss in the study lacked nutrients, especially iron.
9 citations
,
September 2019 in “Journal of clinical sleep medicine” Vitamin B12 deficiency can rarely cause excessive daytime sleepiness.
1 citations
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June 2018 in “International Journal of Contemporary Pediatrics” Poor nutrition in young children causes skin and hair issues, highlighting the need for better nutrition education.
July 2023 in “Dermatology practical & conceptual” Low hemoglobin levels are significantly correlated with hair loss in women with Telogen Effluvium.