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    Glossary Vitamin A Deficiency

    lack of vitamin A leading to vision and immune issues

    Vitamin A Deficiency, also known as hypovitaminosis A, occurs when the body doesn't get enough vitamin A, an essential nutrient for maintaining healthy vision, immune function, and skin health. This deficiency can lead to symptoms such as night blindness, an increased risk of infections, and in severe cases, can cause complete blindness and other serious health issues.

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    Research 10 of 1000+

    1. Vitamin D deficiency in alopecia areata 2014 · 105 citations
    2. Reversible Hyperpigmentation of Skin and Nails With White Hair due to Vitamin B12 Deficiency Archives of Dermatology · 1986 · 77 citations
    3. Increased prevalence of vitamin D deficiency in patients with alopecia areata: a systematic review and meta‐analysis 2018 · 48 citations
    4. Vitamin D deficiency in patients with alopecia areata: A systematic review and meta-analysis Journal of the American Academy of Dermatology · 2017 · 32 citations
    5. Prevalence of vitamin D deficiency in Slovak women with polycystic ovary syndrome and its relation to metabolic and reproductive abnormalities Wiener Klinische Wochenschrift · 2015 · 16 citations
    6. Reversible cutaneous hyperpigmentation and nails with white hair due to vitamin B12 deficiency. PubMed · 2008 · 16 citations
    7. Skin Hyperpigmentation and Increased Angiogenesis Secondary to Vitamin B12 Deficiency in a Young Vegetarian Woman Acta dermato-venereologica · 2008 · 16 citations
    8. Vitamin C Deficiency-Induced Pulmonary Arterial Hypertension CHEST Journal · 2020 · 13 citations
    9. Reversible hyperpigmentation of skin and nails with white hair due to vitamin B12 deficiency Archives of Dermatology · 1986 · 11 citations
    10. Vitamin D Deficiency in Adults with Musculoskeletal Pain Turkish Journal of Osteoporosis · 2015 · 7 citations
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    Community 10 of 905

    1. Has anyone here is vitamin D deficient and lost hair and then regrew? Reddit · 25 Aug 2026
    2. Can Slight Hypothyroidism and Borderline Vitamin D Deficiency Really Prevent Finasteride and Minoxidil From Working? Reddit · 14 Aug 2026
    3. Vitamin D deficiency and hair loss - does anyone have personal evidence of hair regrowth following correction? Reddit · 21 May 2026
    4. M20 Vitamin D Deficiency and Hair Thinning Community · 14 May 2025
    5. Vitamin D deficiency - could it be the cause? Reddit · 7 May 2025
    6. Does vitamin D deficiency actually cause hair loss? Has anyone actually grew back hair after fixing vitamin d levels? Reddit · 19 Oct 2024
    7. Vitamin D deficiency strongly correlates with androgenic alopecia, FMPH and telogen effluvium Reddit · 24 Sept 2024
    8. What vitamin deficiencies that cause hair loss Reddit · 10 Sept 2025
    9. Vitamin Deficiency Correction Timeline? Reddit · 9 Feb 2026
    10. 19, Diffuse Thinning with Vitamin Deficiency: Start Minoxidil or Wait? Community · 19 Jul 2025
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    Learn 10 of 26

    1. Vitamin D Vitamin made in the skin from sunlight, also taken as a supplement
    2. Biotin B vitamin, often sold as a hair supplement
    3. Vitamin C
    4. Vitamin B5
    5. Vitamin B6
    6. Vitamin E
    7. Vitamin B12
    8. vitamin A
    9. Vitamin B1
    10. vitamin b2
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