Effect of vitamin D on gastrointestinal symptoms and health-related quality of life in irritable bowel syndrome patients: a randomized double-blind clinical trial
Neurogastroenterology & Motility, DOI: 10.1111/nmo.12851
A. Abbasnezhad1, R. Amani2,*, E. Hajiani3, P. Alavinejad3, B. Cheraghian4 andA. Ghadiri5
Note: They would have found a much better increase of QoL if they just looked at the time when vitamin D levels were raised enough to be effective - approximatly 4 months
See also Gut problems associated with low vitamin D – invited review Dec 2015
This study does not appear to be aware of the many other ways to increase vitamin D
- injection, topical, sublingual, "gut friendly"
click on chart for details
- Irritable Bowel Syndrome treated by weekly 50,000 IU Vitamin D – RCT 2019
- Ulcerative Colitis inflammation treated by weekly vitamin D (40,000 IU) – July 2018
- Gut bacteria of Crohn's disease patients improved by Vitamin D – March 2018
- 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
- Ulcerative colitis treated by injection of 300,000 IU of vitamin D – RCT July 2016
- IBS quality of life improved by vitamin D (50,000 IU every two weeks) – RCT May 2016
- IBS – 82 percent had low vitamin D, 3,000 IU spray helped a lot – RCT Dec 2015
- Crohn's disease treated by 2000 IU Vitamin D - RCT June 2015
- Crohn’s disease helped when vitamin D level raised above 30 ng – RCT Feb 2015
- Irritable Bowel Syndrome - can it be treated by 3000 IU of vitamin D - RCT Feb 2014
- Crohn's Disease patients normalizing their Vitamin D levels decreased risk of surgery by 44 percent – Aug 2013
- Crohn’s helped by 5000 IU vitamin D – April 2013
ALL 8 measures improved by Vitamin D
Low-grade mucosal inflammation and immune activation are involved in the pathogenesis of irritable bowel syndrome (IBS). Furthermore, IBS symptoms are associated with a significantly higher prevalence of psychological distress, which in itself results into an impaired quality of life (QoL). Vitamin D could ameliorate the symptoms of patients suffering from IBS through its beneficial effects on psychological factors and inflammation.
A total of 90 IBS patients participated in this double-blind, randomized, placebo-controlled study. Participants were randomly selected to receive either 50 000 IU vitamin D3 or a placebo fortnightly for a period of 6 months. Patients reported their IBS symptoms at the baseline and monthly during intervention periods. The IBS severity score system (IBSSS) and IBS-specific QoL questionnaires were used at the baseline and postintervention.
Over the 6-month intervention period, a significantly greater improvement in IBS symptoms such as abdominal pain and distention, flatulence, rumbling, and overall gastrointestinal (GI) symptoms (except dissatisfaction with bowel habits) was observed in the patients receiving vitamin D as compared to the placebo group. The IBSSS and the IBS-QoL scores in the vitamin D group significantly improved compared to the placebo group postintervention (mean IBSSS score change: -53.82 ± 23.3 vs -16.85 ± 25.01, p < 0.001, respectively; mean IBS-QoL score change: 14.26 ± 3 vs 11 ± 2.34, p < 0.001, respectively).
Conclusions & Inferences
Vitamin D seems to be an effective and safe option to improve QoL and symptoms of IBS. ClinicalTrials.gov (NCT02579902).