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    Glossary Vitamin D Metabolism

    process converting vitamin D into its active, calcium-regulating form

    Vitamin D metabolism refers to the process by which the body converts vitamin D from sunlight or dietary sources into its active form, which is crucial for calcium absorption and bone health. This involves two main steps: first, vitamin D is converted to calcidiol in the liver, and then to calcitriol in the kidneys, which is the biologically active form that helps regulate calcium and phosphate levels in the blood.

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    1. Sunlight: Does it Stimulate Hair Growth or Hair Loss? Reddit · 9 Apr 2024
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    21. PSA: Check your vitamin D levels! Reddit · 20 Jun 2025
    22. Hair loss from low ferritin (5 ng/mL) and vitamin D deficiency – how long to see regrowth? Reddit · 14 Jun 2025
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    24. 3.5 month dutasteride(1mg)+ vitamin D+ minoxidil %5 progress (24 years old). Reddit · 16 May 2025
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