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私たちの皮膚はどうやって太陽光をビタミン D に変えるのでしょうか?
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Episode 51: Vitamin D Deficiency? | Healthy Reasonings Podcast
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Vitamin D: Sunlight vs. Supplements - The TRUTH! | Dr Michael Holick Clips
How Much Sun Exposure Recommended to Get 100% Vitamin D in INDIA | Time & Duration Explained
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Sunlight vs Supplements: Vitamin D, Bone Health & Autoimmunity - with Professor Michael Holick
Here Comes The Sun: The Science of Vitamin D