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A comment on Vitamin D Supplementation Improves Cognitive Function: 12-month RCT. Parent comment
If you do take Vitamin D, variant D3 is by far best, and it may be wise to take vitamin K2 as well to avoid calcium metabolism issues (calcification).
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If you do take Vitamin D, variant D3 is by far best, and it may be wise to take vitamin K2 as well to avoid calcium metabolism issues (calcification).