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It seems its well known that low vitamin D can cause sleeping issues, one link:

https://examine.com/nutrition/can-supplemental-vitamind-improve-sleep/

Therefore, I became curious and was wondering about the reverse. If someone had, say, by supplementation (since it seems its nearly impossible to do its via the sun) too much vitamin D. Can that affects someones sleep pattern?

My theory is that vitamin D is correlated with being in the sun. So if your body has too much vitamin D it would think its in the sun to much and stay awake or not have normal sleep patterns. Though I am just guessing. I'd love to see better thought out reasonings and ideally any real scientific evidence pointing to what the relation of excess vitamin D with sleep is.


By excess vitamin D3 I mean more than 2,000 IU units daily or more than 50,000 IU weekly.

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  • A note on calcium and magnesium medicalnewstoday.com/releases/163169.php
    – Gordon
    Commented Dec 16, 2018 at 15:04
  • If one is on "high dose" vitamin D, calcium needs will go down (say no more than 500mg a day), but magnesium needs will go up, reserve 100mg magnesium just to assist the Vitamin D. Might not be a bad idea to take K2 also.
    – Gordon
    Commented Dec 16, 2018 at 15:06
  • Be under the care of a doctor so they can run regular blood tests, for one thing to check calcium that is in the blood. Kidney issues. Of course vitamin D status. The vitamin K, K2 must be managed with those on blood thinners. So really this should be under physician management imo. vitamindwiki.com/…
    – Gordon
    Commented Dec 16, 2018 at 15:10
  • Such a person as you describe may be low on magnesium. (It is possible to take more calcium if one is on K2 probably). Again work with a physician who can help monitor a blood tests. One does not want too much calcium to lodge in the heart, kidneys etc.
    – Gordon
    Commented Dec 16, 2018 at 15:26
  • Magnesium education: magnesiumeducation.com
    – Gordon
    Commented Dec 16, 2018 at 16:04

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