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☀️ D3: The Calcium Doorman 🚪 Only 10% Gets In Without D3!
D3: The Calcium Doorman 🚪🦴🦷
Most people don’t realize: without D3, your gut absorbs only about 10% of the calcium you eat. That means 9 out of 10 calcium “guests” never make it in. With enough D3, absorption can jump up to 20x more! That’s how bones and teeth get strong 💪 🦴🦷🩻
But here’s how it actually works in your body:
🔬 The D3 Journey
1️⃣ Skin: Sunlight (UVB rays) hits your skin → makes raw D3 (cholecalciferol). 🌞
2️⃣ Liver: The liver changes D3 into calcidiol (the storage form). 🧪
• This is what blood tests measure.
• Most livers can do this unless there’s major disease like cirrhosis.
3️⃣ Kidneys: The kidneys convert calcidiol into calcitriol: the active hormone. 💥
• This is the “boss form” of D3 that tells your gut: “Absorb calcium now!”
4️⃣ Bones & Teeth: Finally, calcium gets inside and strengthens your bones + teeth. 🦴🦷🩻🎉
📊 Recap
• ❌ No D3 → only ~10% calcium absorbed
• ✅ With D3 → up to 20x more calcium absorbed
• ⚠️ But calcium is clueless… it still needs K2 to guide it to bones (that’s in the next video).
📚 Sources to Study More
• Harvard Health: https://www.health.harvard.edu/staying-healthy/vitamin-d-and-your-health
• NIH (US gov): https://ods.od.nih.gov/factsheets/VitaminD-Consumer
• Cleveland Clinic: https://my.clevelandclinic.org/health/articles/15050-vitamin-d–vitamin-d-deficiency
💬 Community Call
Do you get your D3 mostly from sun, food, or supplements? Ever tested your levels?
Drop your thoughts and questions below ⬇️ let’s help each other grow stronger and healthier.
🔔 Next Video
Don’t miss Part 2 → K2: The Dance Floor Guide (Calcium’s GPS).
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