10

votes

Vitamin D: Morning (Seth Roberts) versus Night (Robb Wolf)

Answered on August 19, 2014
Created February 16, 2012 at 7:16 PM

Seth Roberts has been collecting anecdotes from people taking vitamin D in the early morning and reporting improved sleep. He thinks the body might interpret it like sunlight.

Robb Wolf, on the other hand, finds that taking VD3 at night works best for him.

What factors determine whether one will get better results from taking VD3 in either the early morning or evening?

510bdda8988ed0d4b0ec0b738b4edb73

(20888)

on March 05, 2012
at 06:00 PM

It was fairly recent. Last 5 or so.

1586db0f16b2cef51ee4e71ab08ad1a2

(965)

on March 05, 2012
at 05:19 PM

Do you remember which episode this was in?

Ed71ab1c75c6a9bd217a599db0a3e117

(25482)

on February 17, 2012
at 02:53 AM

yep......my paleo Summit talk with Sean is all about this.

F3fc2e0a9577e7e481a387d917904d1e

(1070)

on February 17, 2012
at 02:16 AM

Do you have any particular ideas on this topic though?

F4d04667059bc682540fdfd8b40f13a7

on February 16, 2012
at 11:30 PM

Interesting Miked, will have to read up on that

B442730f74eed4f00b7d6027a7109977

(100)

on February 16, 2012
at 08:52 PM

I too take both at night and have had no issues. I am taking magnesium supps so I am already getting very good sleep. I haven't noticed if it's any better or worse since adding in the D3.

510bdda8988ed0d4b0ec0b738b4edb73

(20888)

on February 16, 2012
at 08:16 PM

Robb make a good point about the evolutionary reason for night time supplementation - when you're out in the sun you're not making Vit D, you're making all of the precursors. You actually don' t make the D until you're sleeping and it's dark out.

1dcfcebc5f36408d121f124a78292d42

(1295)

on February 16, 2012
at 07:56 PM

I usually take mine throughout the day. I'm curious what others with will recommend.

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8 Answers

5
36defae79ba8304c5d6c7c326c926ec8

on February 17, 2012
at 12:03 AM

I got the idea from Tara Grant. Her sleep instantly improved when she started taking Vitamin D3 first thing in the morning instead of mid-afternoon or early evening.

3
F4d04667059bc682540fdfd8b40f13a7

on February 16, 2012
at 08:14 PM

Interesting - I can't see evolutionionary reasons for either. I'm always careful to take mine as close to solar noon as possible - and only on days I've not had adequate sun exposure

510bdda8988ed0d4b0ec0b738b4edb73

(20888)

on February 16, 2012
at 08:16 PM

Robb make a good point about the evolutionary reason for night time supplementation - when you're out in the sun you're not making Vit D, you're making all of the precursors. You actually don' t make the D until you're sleeping and it's dark out.

F4d04667059bc682540fdfd8b40f13a7

on February 16, 2012
at 11:30 PM

Interesting Miked, will have to read up on that

2
510bdda8988ed0d4b0ec0b738b4edb73

(20888)

on February 16, 2012
at 08:15 PM

After hearing Robb's podcast I switched my Vit D to night along with my Mg. MUCH better sleep. It's like I just pass out and don't remember the night at all and I wake up refreshed. There is probably no single right answer for everyone; and, it's so simple to test for yourself, that you should just do a week both ways and see what works best for you.

B442730f74eed4f00b7d6027a7109977

(100)

on February 16, 2012
at 08:52 PM

I too take both at night and have had no issues. I am taking magnesium supps so I am already getting very good sleep. I haven't noticed if it's any better or worse since adding in the D3.

510bdda8988ed0d4b0ec0b738b4edb73

(20888)

on March 05, 2012
at 06:00 PM

It was fairly recent. Last 5 or so.

1586db0f16b2cef51ee4e71ab08ad1a2

(965)

on March 05, 2012
at 05:19 PM

Do you remember which episode this was in?

2
794978379087a4c0db7eb7a71554ee45

(30)

on February 16, 2012
at 08:02 PM

I had trouble sleeping when I started Paleo and was taking my D3 at night before bed. Was nervous and couldn't seem to settle down. No problems since I went to morning, I have them with my fish oil right after breakfast.

1
79fc447191de75e7c178951594a43f13

(448)

on February 16, 2012
at 10:17 PM

I prefer taking it in the morning. I think it helps set my circadian rhythm.

1
Ed71ab1c75c6a9bd217a599db0a3e117

(25482)

on February 16, 2012
at 08:07 PM

Knowing Robb's schedule and how busy he is I bet he is telling the truth about D3 better at night for him because his circadian rhythms are pretty screwed up secondary to his neolithic life.

Ed71ab1c75c6a9bd217a599db0a3e117

(25482)

on February 17, 2012
at 02:53 AM

yep......my paleo Summit talk with Sean is all about this.

F3fc2e0a9577e7e481a387d917904d1e

(1070)

on February 17, 2012
at 02:16 AM

Do you have any particular ideas on this topic though?

1
41dfb1a4fecb38d24075ff52f13ccb28

on February 16, 2012
at 08:04 PM

I prefer it at night. I find I sleep better. You probably have to test it out and see which one works better for you.

0
3cd398a671e0a51d8a75e0c633621ce6

on November 06, 2012
at 01:31 AM

I tried taking vitamin D the evening first, and I was pretty anxious and could not sleep even with only 2000 iu/day. I switched to morning in past 2 weeks and I have been sleeping like a baby ever since. I think my explanation for sleep disturbance is that the fillers in vitamin D supplements could be the culprit rather than the vitamin D itself. I have bumped my daily intake to 5000 this past week and it seems to be working.

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