Following on from our webinar ‘Vitamin D Update Series Session 3 – Vitamin D and Immune Health’, we have pulled together some of the 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.

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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

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



Calcifediol treatment and COVID-19-related outcomes (2021), Nogues et al. Study finding that in patients hospitalised with COVID-19, calcifediol treatment significantly reduced ICU admission and mortality

Calcifediol Treatment and Hospital Mortality Due to COVID-19: A Cohort Study (2021), F. Alcala-Diaz et al. Study finding that among patients hospitalised with COVID-19, treatment with calcifediol was significantly associated with lower in-hospital mortality

Effect of a Single High Dose of Vitamin D3 on Hospital Length of Stay in Patients With Moderate to Severe COVID-19 (2021), Murai et al. Study reporting that Vitamin D supplementation did not significantly reduce hospital length of stay for COVID-19

Vitamin D and immune regulation: antibacterial, antiviral, anti-inflammatory (2020), Bishop et al. Recommended top read from the speaker of the webinar – study exploring the role of vitamin D in immune function

Nutrition, immunity and COVID-19 (2020), Calder P. The role of vitamins (including Vitamin D) and trace elements in the immune system and reducing risk of infections

Vitamin D and SARS-CoV-2 virus/COVID-19 disease (2020), S. Lanham-New et al. Evidence-based advice around Vitamin D and COVID-19

Failure of national antenatal vitamin D supplementation programme puts dark skinned infants at highest risk: A newborn bloodspot screening study (2020), Uday et al. Study finding that nearly 70% of all newborns and 85% of winter-borns had 25(OH)D concentrations below 50 nmol/L (20 μg/L)

Clinical trial to investigate whether vitamin D protects against COVID-19 (2020), Queen Mary University of London. Information on a new clinical trial investigating whether vitamin D could protect people from COVID-19

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

Effects of Cholecalciferol vs Calcifediol on Total and Free 25-Hydroxyvitamin D and Parathyroid Hormone (2017), Shieh et al. Study finding that calcifediol increased vitamin D status more rapidly compared to cholecalciferol (D3)

Toll-like receptor triggering of a vitamin D-mediated human antimicrobial response (2006), Liu et al. Study looking into the bacterial killing properties of vitamin D



Can Foods Boost Your Immune System? British Dietetic Association’s (BDA) Older People Specialist Group. Infographic on whether we can ‘boost’ the immune system via diet, the role of food supplements and specific foods and COVID-19

Eat Well, Be Well, Stay Well (2021), The Irish Nutrition and Dietetic Institute (INDI). An article with nutrition tips around COVID-19, including the role of Vitamin D

Trending topics – Vitamin D and COVID-19: Do Latest Studies Support Supplementation? (2021), Pen Nutrition. Exploring the research behind Vitamin D supplementation and COVID-19 outcomes

Vitamin D – the sunshine vitamin, and potential COVID treatment? (2021), Annabel van Griethuysen RD, for the BDA. An article into Vitamin D and the role within COVID-19

Vitamin D and Immunity – Q & A (2020), The British Nutrition Foundation. A resource with answers to typical questions regarding Vitamin D and immunity, including advice on requirements, sources, deficiency, government advice for supplements and COVID-19

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

What should I eat to boost my immunity? (2020), Victoria Taylor RD. Practical advice on nutrition and immunity, including the role of Vitamin D

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

Am I Getting Enough Vitamin D (2019), Ener Delaney RD. Practical advice on how much Vitamin D we need, with top food sources and Vitamin D rich recipes

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



Immunity (2020), a twitter chat between registered dietitians around immunity, including a question point around vitamin D



COVID-19: The role of vitamin D (2020), Sarah Boseley and Susan Lanham-New. Podcast discussion around whether vitamin D could play a role in protection against COVID-19



@MartinHewison (Twitter) for Professor Martin Hewison (speaker of the webinar)

Professor Susan Lanham-New (Linkedin) Speaker of the webinar – World-renowned Vitamin D expert (webinar speaker for Part 1 of the series)

@corferesearch (Twitter) for Professor Bernard Corfe (webinar speaker for Part 2 of the series)

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

@BDA_olderpeople (Twitter) and bda_olderpeople (Instagram) for the British Dietetic Association’s Specialist Older Peoples Group

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

@TheEndoSociety (Twitter), theendocrinesociety (Instagram) and Endocrine Society (Website) for the Endocrine Society

@RoyalOsteoSoc (Twitter),  royalosteosoc (Instagram) and The ROS (Website) for the Royal Osteoporosis Society



New government advice on vitamin D under lockdown (2020). We discuss the latest guidelines around vitamin D supplementation

Immunity series webinars – Part 1, Part 2 and Part 3



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

Key Resources: Vitamin D Update

Vitamin D Update Series Session 2: Vitamin D and Gut Health

Key Resources: Vitamin D and Gut Health