Following on from our Vitamin D Update Series webinar session 2, Vitamin D and Gut Health, we have pulled together key resources and references discussed within the webinar, plus some additional ones on the topic. We have also included useful websites and social media accounts recommended to keep up to date on the subject. If you missed the live webinar, you can watch the recording.

Download a PDF visual summary of the main webinar message

Reports and Guidelines

British Society of Gastroenterology consensus guidelines on the management of inflammatory bowel disease in adults (2021), British Society of Gastroenterology. Guidelines for the management of inflammatory bowel disease (IBD) with input from the British Dietetic Association for nutrition and lifestyle factors

COVID-19 rapid guideline: vitamin D (2020), National Institute for Health and Care Excellence (NICE). Guidance relating to the use of vitamin D in the context of COVID-19

Crohn’s Disease: Management (2019), NICE. NICE guidelines for Crohn’s Disease

Ulcerative colitis: management (2019), NICE. NICE guidelines for Ulcerative Colitis

Irritable bowel syndrome in adults: diagnosis and management (2018), NICE. Guidelines for IBS management

Diet, Nutrition, Physical Activity and Colorectal Cancer (Revised 2018), WCRF, Report specific to colorectal cancer and lifestyle aspects including the role of vitamin D

Vitamin D: supplement use in specific population groups (2017), The Scientific Advisory Committee on Nutrition (SACN). Public health guidance for the use of vitamin D supplementation in specific groups of the population at risk of deficiency

Vitamin D and Health Report (2016), SACN. Report with recommendations for vitamin D supplementation and reference nutrient intakes

Dietary reference values for vitamin D (2016), The European Food Safety Authority (EFSA). Scientific opinion on Dietary Reference Values (DRVs) for vitamin D



Managing vitamin D deficiency in inflammatory bowel disease (2019), Nielsen et al. Summary of the latest knowledge of the immunological effects of vitamin D and inflammatory bowel disease (IBD)

Vitamin D supplementation and total cancer incidence and mortality: a meta-analysis of randomized controlled trials (2019), Keum et al. Meta-analysis of vitamin D supplementation and cancer, finding that supplementation significantly reduced total cancer mortality but did not reduce total cancer incidence

Transcriptomic Response to 1,25-Dihydroxyvitamin D in Human Fibroblasts with or without a Functional Vitamin D Receptor (VDR): Novel Target Genes and Insights into VDR Basal Transcriptional Activity (2019), Costa et al. Study looking into the role of the Vitamin D Receptor (VDR) in health

Gene Expression Profiling and Assessment of Vitamin D and Serotonin Pathway Variations in Patients With Irritable Bowel Syndrome (2018), Dussik et al. Study into IBS and vitamin D insufficiency

Relationship between nutritional status and the systemic inflammatory response: micronutrients (2018), McMillan et al. Study into the role of micronutrients in inflammation, including vitamin D

Vitamin D status in irritable bowel syndrome and the impact of supplementation on symptoms: what do we know and what do we need to know? (2018), Williams et al. Review of the evidence behind vitamin D and IBS and what research is needed in the future

Vitamin D deficiency in inflammatory bowel disease: prevalence and predictors in a Norwegian outpatient population (2017), Frigstad et al. Study finding that vitamin D deficiency was common in Crohn’s disease patients

The impact of vitamin D pathway genetic variation and circulating 25-hydroxyvitamin D on cancer outcome: systematic review and meta-analysis (2017), Vaughan-Shaw et al. Study finding that higher vitamin D levels were associated with better cancer outcomes

Chemoprevention of colorectal cancer in individuals with previous colorectal neoplasia: systematic review and network meta-analysis (2016), Dulai et al. A systematic review into colorectal cancer and the role of candidate agents including vitamin D

Vitamin D3 as a novel treatment for irritable bowel syndrome: single case leads to critical analysis of patient-centred data (2012), Sprake et al. Case study for an IBS sufferer and the impact of vitamin D supplementation on symptoms

Higher Predicted Vitamin D Status Is Associated With Reduced Risk of Crohn’s Disease (2011), Ananthakrishnan et al. Study finding that higher levels of vitamin D reduced the risk for incident Crohn’s Disease

Do sunlight and vitamin D reduce the likelihood of colon cancer? (1980), Garland et al. Research highlighting the link between vitamin D being a protective factor against colorectal cancer


Clasado Biosciences Resources (partner for the webinar)

Learning Hub A learning hub for healthcare professionals, featuring blog posts, videos and Q&A sessions


Other Practical Resources

Inflammatory Bowel Disease (2020), The National Health Service (NHS). An overview of Inflammatory Bowel Disease

Vitamin D (2020), NHS. Article covering the sources of vitamin D, requirements, supplement use and safe upper limits

Vitamin D and fatigue in colorectal cancer survivors (2020), Annaleen Koole for WCRF. Article looking into the role vitamin D can play after a diagnosis of colorectal cancer

Vitamin D (2019), The British Dietetic Association (BDA). Food facts sheet from the BDA

Dietary Sources of Vitamin D (2019), British Nutrition Foundation. A resource looking at the vitamin D content in foods

Vitamin D, The Vegan Society. Advice on vitamin for D for those following a vegan diet


Social media and Websites

@corferesearch (Twitter) for Professor Bernard Corfe (webinar speaker)

Professor Susan Lanham-New (Linkedin) Chair of the webinar – World renowned vitamin D experts

@bda_gastro (Twitter) for the British Dietetic Association’s Specialist Gastroenterology Group

@BDA_dietitians (Twitter), bda_dietitians (Instagram) The BDA (Website) for the British Dietetic Association

@WCRF_UK and WCRF Twitter and Instagram for WCRF

@CrohnsColitisUK (Twitter), crohnsandcolitisuk (Instagram) Crohn’s and Colitis (Website) for Crohn’s and Colitis UK – leading charity for IBD


Related MyNutriWeb content

Vitamin D Update Series Session 1; Vitamin D, An Update – Current 7 Future Perspectives

Key Resources: Vitamin D Update

Vitamin D Update Series Session 3: Vitamin D and Immune Health