Is 50 ng of vitamin D too high, just right, or not enough
Overview of the controversy
- Most experts say 40 ng is good
- Some experts say 50 ng is much better for disease prevention
- Some experts say 50 ng is too much (high latitude, black skin)
- Concern that >40 ng may be too much if taking some chemotherapy and unable to reduce the dose taken
- Some experts feel 50 ng is not enough to TREAT some diseases
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