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Vitamin D3 and Sleep: More Good News From Primal Girl

Posted Jan 19 2012 12:00am

Late last year, Tara Grant (aka Primal Girl ) considered the possibility that taking Vitamin D3 has the same effect as sunlight exposure. For example, taking Vitamin D3 at 7 pm is like getting sunlight at 7 pm. This idea with my advice about how to sleep well (get an hour of sunlight first thing in the morning) ringing in her ears – led her to try to improve her sleep by taking Vitamin D3 first thing in the morning . It worked:

I usually took my supplements mid-afternoon. I vowed to take them first thing every morning. If I forgot, I would not take the Vitamin D at all that day. I tried it the next day and that night I slept like a rock. And the next night. And the next. Days I forgot and skipped the D3, I still slept great. That was the only change I made to my lifestyle and my sleep issues completely resolved.

I called this “ a stunning discovery ” and have blogged about it several times . I recently asked Tara for details and an update. She replied:

I am so happy to hear that 1) other people didn’t make the connection easily so I’m not a little slow and that 2) there seems to be something to my discovery. :) I’ve had a few comments from people who have said it has worked for them too. So let me answer your questions:

[What type of Vitamin D3 do you take?]

I take Trader Joe’s brand of Vitamin D3, which is a 1000 IU gelcap, in olive oil. 180 capsules for $4.99. Best deal I’ve found. I tried the tablets years ago and they had no affect on me (even on 8000 units a day plus tanning twice a week my blood levels were only at 58.)

[Has your sleep remained solid?]

My sleep HAS remained solid. I have not had ONE night of bad sleep since I started paying attention to when I was taking my Vitamin D.

[How much do you take?]

I was initially taking 10,000 units a day. After about 2 months, I cut that back to 5000 units to see if there was a difference. I did not wake up quite as rested, but I still slept soundly through the night. On days that I increase my dosage, I sleep better, deeper and feel more rested the following morning. I’ve tried this several times, even when I’ve been spending the night away from home, and it has made a difference. I have also tried eating sugar shortly before bedtime and caffeine in the afternoon (both things that would always make my sleep restless in the past) and I still sleep well!! I’ve also thrown exercising into the mix to see if it makes a difference but it doesn’t change the quality of my sleep – it just makes me tired earlier in the evening. I continue to change my dosage randomly and monitor the results.

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