Why Do Iron Infusions Cause Low Phosphate? Explained!

🧪 Iron Infusions & Low Phosphate | The FGF23 Connection Explained

Ever prescribed an iron infusion… and then got hit with “Why is the phosphate low?” on an exam or ward round?

This video is your ultimate crash course on the link between iron infusions and hypophosphatemia — a connection that's increasingly showing up in multiple-choice questions and clinical life, but isn’t always intuitive.

🎯 In this video, we unpack:

How the body regulates phosphate through FGF23, PTH, and Vitamin D

The difference between intact and cleaved FGF23

Why ferric carboxymaltose is the main offender

Why CKD protects against this side effect

The hormonal domino effect that keeps phosphate low — even after FGF23 normalises

Management strategies (hint: it's more than just giving phosphate)

🧠 Perfect for:

Exam revision (renal, endocrinology, or general medicine)

Ward learning for interns, residents, and registrars

Anyone who wants to actually understand FGF23 and its role in phosphate balance

✨ Want more exam-ready renal content?
Check out the full Renal for the Written playlist here on YouTube, or dive into our deluxe membership for deeper MCQ-based tutorials → https://tutorials.kristeenbarker.com

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