295: What's the difference between 25(OH)D and 1,25(OH)2D when it comes to the VDR?
Masterjohn Q&A Files Episode 295
Short answer: 25(OH)D is 1000 times weaker at activating the VDR than 1,25(OH)D, but 1000 times more abundant. This is why I advocate measuring both, and ultimately believe we need to create a calculated index of “biological vitamin D activity” from them.
This episode was cut from the original Q&A session that you can find here.
DISCLAIMER: I have a PhD in Nutritional Sciences and my expertise is in performing and evaluating nutritional research. I am not a medical doctor and nothing herein is medical advice.
Listen to the Audio
I highly recommend watching the video above but you can also listen to the audio here:
Read the Transcript or Leave a Comment
Masterpass members have access to the transcript below.
Masterpass members can also read and leave comments below. Non-members can read and leave comments on the general podcast page.
Learn more about the Masterpass here.