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