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Chance of moderately severe COVID 3X less likely if plant-based diet – April 2021

Note: The survey did not ask about vitamin D supplementation.
People on a plant-based diet have less diabetes and may also supplement with Vitamin D


Plant-based diets, pescatarian diets and COVID-19 severity: a population-based case–control study in six countries

Hyunju Kim1,2, Casey M Rebholz1,2, Sheila Hegde3, Christine LaFiura4, Madhunika Raghavan4, John F Lloyd5, Susan Cheng5 and Sara B Seidelmann6,7

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Background Several studies have hypothesised that dietary habits may play an important role in COVID-19 infection, severity of symptoms, and duration of illness. However, no previous studies have investigated the association between dietary patterns and COVID-19.

Methods Healthcare workers (HCWs) from six countries (France, Germany, Italy, Spain, UK, USA) with substantial exposure to COVID-19 patients completed a web-based survey from 17 July to 25 September 2020. Participants provided information on demographic characteristics, dietary information, and COVID-19 outcomes. We used multivariable logistic regression models to evaluate the association between self-reported diets and COVID-19 infection, severity, and duration.

Results There were 568 COVID-19 cases and 2316 controls.
Among the 568 cases,

  • 138 individuals had moderate-to-severe COVID-19 severity whereas
  • 430 individuals had very mild to mild COVID-19 severity.

After adjusting for important confounders, participants who reported following ‘plant-based diets’ and ‘plant-based diets or pescatarian diets’ had 73% (OR 0.27, 95% CI 0.10 to 0.81) and 59% (OR 0.41, 95% CI 0.17 to 0.99) lower odds of moderate-to-severe COVID-19 severity, respectively, compared with participants who did not follow these diets.

Compared with participants who reported following ‘plant-based diets’, those who reported following ‘low carbohydrate, high protein diets’ had greater odds of moderate-to-severe COVID-19 (OR 3.86, 95% CI 1.13 to 13.24). No association was observed between self-reported diets and COVID-19 infection or duration.

Conclusion In six countries, plant-based diets or pescatarian diets were associated with lower odds of moderate-to-severe COVID-19. These dietary patterns may be considered for protection against severe COVID-19.
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VitaminDWiki - 12 studies in both categories Virus and Diabetes

This list is automatically updated


Studies of Diabetes and Diet

  • A plant-based diet for the prevention and treatment of type 2 diabetes - May 2017 doi: 10.11909/j.issn.1671-5411.2017.05.009
  • Changes in Plant-Based Diet Indices and Subsequent Risk of Type 2 Diabetes in Women and Men: Three U.S. Prospective Cohorts - Jan 2021 https://doi.org/10.2337/dc20-1636
  • The effects of popular diets on type 2 diabetes management - May 2019 https://doi.org/10.1002/dmrr.3188
  • Effects of high-protein diet on glycemic control, insulin resistance and blood pressure in type 2 diabetes: A systematic review and meta-analysis of randomized controlled trials - June 2020 https://doi.org/10.1016/j.clnu.2019.08.008
    • "This review showed that a high-protein diet does not significantly improve glycemic control... "
  • Dietary patterns and management of type 2 diabetes: A systematic review of randomised clinical trials - June 2019 https://doi.org/10.1016/j.numecd.2019.02.004
    • Low carb diet not reduce diabetes
  • Diabetes and the Nutrition and Diets for Its Prevention and Treatment: A Systematic Review and Dietetic Perspective - Feb 2020

Attached files

ID Name Comment Uploaded Size Downloads
19562 COVID Diet.jpg admin 12 May, 2023 33.10 Kb 97
19561 Diet and COVID.pdf admin 12 May, 2023 422.86 Kb 86