Response to Vitamin D - many studies
190+ Vitamin D Life pages with RESPONSE OR RESPONDER
This list is automatically updated NOT "vaccine OR virus OR vaccination OR COVID")
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Dr. Berg video of my suggestions of what to do if you have a poor response
When Vitamin D Doesn't Work...Do This! - Jan 2020
Dr. Berg video of my suggestions to increase aborption - 2020
How to Increase Your Vitamin D Absorption?
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Vitamin D Life - Genetics chart shows the vitamin D genes
