Anyone who knows me fairly well would tell you that I have disastrous sleeping disorder...It begins in Seasonal Affective Disorder (SADD) which causes in me a tendency to hibernate in the winter time. Add to that a marked effect by falling barometer - Large storms coming through will knock me out, and I may not surface again for days. These two things I have had all my life.
This alone makes circadian rhythm hard to maintain, but add in bouts of pain, and sleep becomes a rarity, which causes fibromyalgia to awaken, which causes an extraordinary pain cycle to present, making sleep even more rare - till I enter a destructive painful waking, followed by a crash-and-burn cycle... and time just goes out the window. This is a symptom of my later disability with arthritis and fibro...
Needless to say, Vitamin D has long been on my mind - Long periods stuck indoors, long periods of inactivity, and the native deficiency that plainly exists for those of us blessed to live in the greater Northwest, make me a particular candidate for Vitamin D deficiency.
So Vitamin D has been a factor for a long time, to include doctor administered mega-doses, and I know that come winter, I had better get on 3k IU a day, which helps to some degree, but has never been a game changer... Getting on D has always been an ethereal treatment without a noticeable bang-for-buck, but over all, across weeks, I know it helps me some. Likewise, paying attention to the triumvirate interaction between D, Magnesium, and Calcium has been very helpful toward maintaining health, but not in a life-changing way...
But that may have changed. My sister, who is wise in alt med, may have found something. She read somewhere about the advantage of taking Vitamin D with Vitamin K in researching for my brother, who was suffering heart palpitations, which wound up being a vitamin D deficiency of his own.... She remembered the Vitamin K angle, and tried it with him, when developing a regimen. The response was much more immediate than she was used to (Vitamin D deficiency is a go-to diagnosis in the Northwest).
So she then tried it on me.
It is too early to say for sure, but this has the making of a phenomenon in me.
I went (in two days) from a free-wheeling circadian rhythm where day and night, and time itself, had ceased to exist, to a rigidly stable 'awake at 6am, asleep at 11pm' cycle that is all but set in stone.
Energy levels have doubled, as has desire to do, and sleep, when it comes, requires no aid, hitting me almost uncontrollably like a freight train.
The only difference was an increase to 10k IU D, which is not really a 'change', and the addition of this one outlier, 'vitamin K'.
Like I said, too early to tell long term, but folks having trouble assimilating Vitamin D, or finding Vit D to be a lackluster help, had better research the addition of Vit K... I have never had this positive a reaction, ever before.