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![Sonic The Hedgehog [Roger Craig Smith]](https://res.dogdub.ai/tts/pic/2025/1010/48484faae07e4cfdb8064da770ee461e.png)

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Let's discuss vitamin D absorption and its impact on calcium metabolism. While sunlight exposure triggers vitamin D synthesis, many factors affect its bioavailability. The average person needs between 2000-5000 IU daily, but absorption rates vary based on age, weight, and melanin levels.
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