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    Learn 3 of 26

    1. Vitamin D Vitamin made in the skin from sunlight, also taken as a supplement
    2. Calcium D oantothenate
    3. Biotin B vitamin, often sold as a hair supplement
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    Research 10 of 1000+

    1. A Comprehensive Systematic Review of the Association Between Vitamin D Deficiency and Alopecia Areata Jurnal Sehat Indonesia (JUSINDO) · 2026
    2. The Epidermal Vitamin D System and Innate Immunity: Some More Light Shed on This Unique Photoendocrine System? Dermatology · 2008 · 14 citations
    3. VITAMIN D DEFICIENCY IN PATIENTS WITH ALOPECIA AERATA, AND RESPONSIVENESS TO VITAMIN D ANALOGUES: A SYSTEMATIC REVIEW Journal of advanced research in Medical and Health science · 2024
    4. Increased prevalence of vitamin D deficiency in patients with alopecia areata: a systematic review and meta‐analysis 2018 · 48 citations
    5. Vitamin D deficiency in patients with alopecia areata: A systematic review and meta-analysis Journal of the American Academy of Dermatology · 2017 · 32 citations
    6. Off-Label Uses of Topical Vitamin D in Dermatology: A Systematic Review Journal of cutaneous medicine and surgery · 2014 · 26 citations
    7. Association of Alopecia Areata with Vitamin D and Calcium Levels: A Systematic Review and Meta-analysis Dermatology and Therapy · 2020 · 6 citations
    8. The effect of vitamin D on the hormonal profile of women with polycystic ovarian syndrome: a systematic review and meta-analysis Middle East Fertility Society Journal · 2024 · 3 citations
    9. Vitamin D and its Analogs in Treatment of Mild to Moderate Alopecia Areata: Systematic Review and Meta-Analysis. PubMed · 2025
    10. Vitamin D deficiency in non-scarring and scarring alopecias: a systematic review and meta-analysis Frontiers in Nutrition · 2024
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    Community 10 of 905

    1. MY Hair Loss Treatment Summary Reddit · 3 Jun 2024
    2. Balding absolutely ruined my life at 17. Reddit · 1 Aug 2024
    3. Give me courage, friends! / Is finasteride response correlated with aggressiveness of hair loss? Reddit · 27 Jan 2023
    4. Serious question, is there nothing that can be done if Dutasteride doesn’t help to stop my hair loss? Reddit · 7 Jul 2022
    5. Any advice/ alternatives after stopping Fin Reddit · 30 Oct 2025
    6. New update: progress pics, stack (shedding i believe has stopped)anyone gone through this? Reddit · 2 Sept 2024
    7. 1 year Monthly Progress (Top Minox, Oral Fin, Vitamin D, Dermastamp) Reddit · 18 Jul 2026
    8. 3 months into fin / min / biotin/ vitamin c / vitamin d Reddit · 12 May 2026
    9. I got my blood test results, my Thyroid and Ferritin are good but Vitamin D is 11.1 I started topic minoxidil yesterday (5%) Reddit · 2 Apr 2026
    10. Rare case: AGA recovery with vitamin D alone (case study) Reddit · 21 Mar 2026
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