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Overview Gut and vitamin D

Did you know?
  • High level of vitamin D/UV reduces the risk of many gut problems
  • Many gut problems result in less absorption of Vitamin D & Magnesium . . .
    Not restoring Vitamin D levels increases the risk of many other diseases
  • Increasing Vitamin D reduces many inflammations - incude those of the gut
  • Several companies make gut-friendly forms of vitamin D
  • There are 187 items in the Gut category in VitaminDWiki
          (more GUT information below)

Learn how Vitamin D is essential for good health
  Watch a 5 minute video "Does Less Sun Mean more Disease?"
  Browse for other Health Problems and D in left column or here
  see also Supplementing and More in the menu at the top of every page
If you have a disease associated with low Vit D take Vit D
Raising your Vit D levels will substantially prevent other low-Vit D health problems
Proof that Vitamin D Works   Getting Vitamin D into your body

Is 50ng enough?   How to restore levels quickly  VitaminDWiki interview and transcript - Jan 2022
Books and Videos 228   Diseases that are related via low vitamin D
Reasons for low response to vitamin D   Why are doctors reluctant
Cancer studies include:   Breast 239   Colon 132   Lung 53   Prostate 97   Pancreatic 54   Skin 115
Colds and flu   Dark Skin 455   Diabetes 514   Obesity 396   Pregnancy 837   Seniors 387
COVID-19 treated by Vitamin D - studies, reports, videos

Gut Summary

  • Gut problems result in reduced absorption of Vitamin D, Magnesium, etc.
  • Celiac disease has a strong genetic component.
    • Most, but not all, people with celiac disease have a gene variant.
    • An adequate level vitamin D seems to decrease the probability of getting celiac disease.
    • Celiac disease causes poor absorption of nutrients such as vitamin D.
    • Bringing the blood level of vitamin D back to normal in patients with celiac disease decreases symptoms.
    • The prevalence of celiac disease, not just its diagnosis, has increased 4X in the past 30 years, similar to the increase in Vitamin D deficiency.
  • Review in Nov 2013 found that Vitamin D helped
    Many intervention clinical trials with vitamin D for Gut problems (101 trials listed as of Sept 2019)
  • All items in category gut and vitamin D 187 items

See VitaminDWiki (other than Crohn's)


87% of eating disorders got worse with COVID-19 - Aug 2020

Exploring the impact of the COVID-19 pandemic and UK lockdown on individuals with experience of eating disorders
UK study, FREE PDF

Celiac disease is the most common genetic disease in Europe.

In Italy about 1 in 250 people and in Ireland about 1 in 300 people have celiac disease.
from http://www.wrongdiagnosis.com/c/celiac_disease/prevalence.htm

Many gut diseases will do better with gut-friendly forms of Vitamin D

Gut-friendly, Sublingual, injection, topical, UV, sunshine

Getting Vitamin D into your body has the following chart

Getting Vitamin D into your body also has the following
If poorly functioning gut
Bio-D-Mulsion Forte – especially made for those with poorly functioning guts, or perhaps lacking gallbladder
Sublingual – goes directly into bloodstream
   you can make your own sublinqual by dissovling Vitamin D in water or using nanoemulsion form
Oil: 1 drop typically contains 400 IU, 1,000 IU, or 4,000 IU, typically not taste good
Topical – goes directly into bloodstream. Put oil on your skin, Use Aloe vera cream with Vitamin D, or make your own
Vaginal – goes directly into bloodstream. Prescription only?
Bio-Tech might be usefulit is also water soluble
Vitamin D sprayed inside cheeks 2X more response (poor gut) – RCT Oct 2015
    and, those people with malabsorption problems had a larger response to spray
Inject Vitamin D quarterly into muscle, into vein, or perhaps into body cavity if quickly needed
Nanoparticles could be used to increase vitamin D getting to the gut – Oct 2015
Poor guts need different forms of vitamin D has the following
Guesses of Vitamin D response if poor gut

Bio FormSpeedDuration
10Injection ($$$)
or Calcidiol or Calcitriol
D - Slow
C -Fast
10 Sun/UVBSlowLong
(skin patch/cream, vagina)
Fast nano
9Nanoemulsion -mucosal
perhaps activates VDR
9?Inhaled (future)FastNormal
8Bio-D-Mulsion ForteNormalNormal
6Water soluble (Bio-Tech)NormalNormal
(some goes into gut)
3Coconut oil basedSlowNormal
2Food (salmon etc.)SlowNormal
2Olive oil based (majority)SlowNormal

10= best bioavailable, 0 = worst, guesses have a range of +-2
Speed: Fast ~2-6 hours, Slow ~10-30 hours
Duration: Long ~3-6 months, Normal = ~2 months

See also web


Celiac Disease is similar to Crohn's Disease in that both decrease vitamin D which can be absorbed in the gut

Celiac Disease may be similar to Crohn's Disease on the following chart

Possible Vitamin D Interactions

Review of IBD and Vitamin D (generally < 1,000 IU) - Feb 2014

Review of observational and intervention studies
 Download the PDF from VitaminDWiki

Vitamin D Council- IBS April 2013__


  • Some researchers think that low vitamin D levels may be a consequence of having IBD because the symptoms may cause you to stay indoors more and eat less.
  • However, studies have found that even people who are newly diagnosed with IBD tend to have low vitamin D levels.
    • This means that low vitamin D levels may be a risk factor for developing IBD
  • . . it has been shown that there is a difference in the risk of developing IBD based on where you live and the amount of sun exposure you get.
  • Small 2013 Crohn’s disease study with 5,000 IU of Vitamin D
    • All but 1 person had lower disease activity scores and higher quality of life after treatment.
    • 67% of the people went into remission.
  • Large 2013 IBD study: For every 1 ng/mL increase in vitamin D levels, there was a 6% decrease in risk of colorectal cancer.

Does Gluten-Free Diet Protect Children with Celiac Disease from Low Bone Density? - Aug 2014

 Download the PDF from VitaminDWiki.
They believe: CD ==> poor absorption ==> low vitamin D ==> low Bone Mineral Density
They conclude that if teen with CD has bone pain should have DXA test of BMD, then might consider giving vitamin D.

SBI can help Colitis - Aug 2022

SBI = Serum-Derived Bovine Immunoglobulin/Protein Isolate,
by Eugene Heyden



Colon Diseases



Crohn's reduced by plant-based diet - Dr. Greger

Crohn's reactions to yeast, milk, eggs - good video review of many studies (video with transcript)- Feb 2021
Is Nutritional Yeast Healthy for Everyone? Dr. Greger

The Best Diet for Crohn’s Disease Treatment Video with transcript April 2021

Vitamin D levels OK months before Crohn's, but were low only after Crohn's

Crohn's and Colitis infographic


VitaminDWiki pages with CROHN in title (36 as of Aug 2022)

This list is automatically updated

Items found: 38
Title Modified
IBD (Colitis, Crohn’s) was active 6X more often if low vitamin D – June 2015 30 May, 2022
IBD and Crohn's patients need Vitamin D, even to increase drug efficacy (Vedolizumab) June 2021 29 Jun, 2021
Crohn’s disease helped when vitamin D level raised above 30 ng – RCT Feb 2015 26 Mar, 2021
Crohn’s Disease reduced for a year by 7 weeks of high dose Vitamin D – RCT March 2021 26 Mar, 2021
Crohn's Disease patients normalizing their Vitamin D levels decreased risk of surgery by 44 percent – Aug 2013 09 Feb, 2021
Crohn's Disease 4X less likely to reoccur after surgery if good level of vitamin D – Feb 2021 09 Feb, 2021
Crohn’s Disease is associated with poor Vitamin D Receptor (many solutions) – April 2020 29 Apr, 2020
Crohn's disease associated with 7.6X deactivation of Vitamin D receptor – July 2015 12 Nov, 2019
Crohn’s Disease associated with lower Vitamin D - meta-analysis Sept 2019 28 Sep, 2019
Crohn’s Disease Activity predicted by vitamin D plus 2 additional blood tests – Dec 2018 07 May, 2019
Inflammatory Bowel Disease in children is associated with low Vitamin D, Iron (also low Zinc for Crohn’s) – Aug 2018 28 Aug, 2018
Gut bacteria of Crohn's disease patients improved by Vitamin D – March 2018 15 May, 2018
Crohn's patients with Vitamin D less than 30 ng were 1.8 X more likely to be readmitted within 1 year – April 2017 13 Mar, 2018
Crohn's disease in black children is worse in 6 ways – Dec 2015 10 Dec, 2017
Crohn's Disease flares 20 percent more likely if poor Vitamin D Binding Protein – Oct 2016 09 Nov, 2017
Crohn’s Disease risk increased 3 X if inadequate vitamin D level (another form is needed) – Oct 2017 12 Oct, 2017
Crohn's Disease relapse rate of 3 in 8 with 1,0000 IU vs 0 in 12 with 10,000 IU of Vitamin D – RCT Feb 2017 16 Jul, 2017
Crohn's Disease relapse rate of 3 in 8 with 1,000 IU vs 0 in 12 with 10,000 IU of Vitamin D – RCT Feb 2017 15 Jul, 2017
Crohn's disease treated by 2000 IU Vitamin D - RCT June 2015 31 Jan, 2017
Crohn’s disease associated with vitamin D and latitude – meta-analysis Dec 2015 11 Dec, 2016
Boron and Granulomas (TB, Rheumatoid arthritis, Crohn's, Rheumatic Fever etc.) - 2015 14 Nov, 2016
Crohn’s disease associated with low vitamin D, unless in remission (22 vs 28ng)– Dec 2015 30 Jul, 2016
Is vitamin D supplementation a viable treatment for Crohn's disease – Nov 2015 18 Nov, 2015
Infliximab reduction of inflammation (Crohn’s) greatly aided by Vitamin D – Sept 2015 12 Sep, 2015
Crohn's disease treated by Vitamin D - RCT June 2015 07 Aug, 2015
Crohn’s disease deficient in vitamin K – IBD deficient in vitamins K and D – April 2011 17 Feb, 2015
Crohn’s helped by 5000 IU vitamin D – April 2013 17 Feb, 2015
Crohn’s Disease – strange things such as no change of vitamin D levels with season – Dec 2014 09 Dec, 2014
Surgery for Crohn's disease 2X less likely if managed to raise vitamin D above 30 ng – May 2013 06 May, 2014
Active Crohn's disease is associated with low vitamin D levels – Feb 2013 14 Feb, 2013
About 40 percent more likely to get Crohn’s Disease or UC if have low vitamin D – March 2012 03 Nov, 2012
More than half those with Crohn’s disease have less than 20ng of vitamin D – March 2012 03 Nov, 2012
Even 800 IU vitamin D improved Crohn’s disease bone density – June 2012 03 Jul, 2012
Crohn's disease kids are 2X more likely to have low vitamin D, intervention helps – April 2012 12 Jun, 2012
IBD and Crohn but not Colitis associated with low vitamin D – May 2011 05 Jun, 2012
Crohn’s Disease strongly associated with low vitamin D in South Asians – March 2012 29 Mar, 2012
Extra Vitamin D needed for Crohns 14 Mar, 2012
Crohn’s relapse reduced from 29% to 13% by taking 1200 IU of D3 – May 2010 04 Apr, 2011

Overview Gut and vitamin D        
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Attached files

ID Name Comment Uploaded Size Downloads
10941 IBD vs IBS.jpg admin 01 Dec, 2018 13:25 29.38 Kb 7969
10469 Crohn's and Colitis.jpg admin 03 Sep, 2018 07:53 175.61 Kb 5013
9421 Colon Diseases.jpg admin 27 Feb, 2018 16:31 28.14 Kb 5045
7385 Optimal vitamin D levels in Crohn’s disease - a review.pdf PDF admin 24 Nov, 2016 15:16 1.40 Mb 1352
5307 Cannabis Crohn's.pdf PDF admin 14 Apr, 2015 16:12 465.15 Kb 2114
5212 1987.jpg admin 22 Mar, 2015 16:54 87.79 Kb 6596
5211 Poor D2 absorption if poor gut - 1987.pdf PDF admin 22 Mar, 2015 16:49 1.29 Mb 1846
4125 CD and low vitamin D July 2014.pdf PDF 2014 admin 10 Jul, 2014 02:45 593.50 Kb 2389
3618 IBS Vitamin D Council.jpg admin 15 Feb, 2014 20:56 477.02 Kb 11235
3604 IBD - Feb 2014.pdf PDF 2014 admin 08 Feb, 2014 12:30 3.92 Mb 3705
2654 intestinal-microflora-gut-floria-health.jpg admin 26 Jun, 2013 17:19 37.90 Kb 11188
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