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0 0.5 1 1.5 2+ Hospitalization 81% Improvement Relative Risk Diet for COVID-19  Zamanian et al.  Prophylaxis Is a healthy diet beneficial for COVID-19? Retrospective 141 patients in Iran Lower hospitalization with healthier diets (p=0.0016) Zamanian et al., Clinical Nutrition Op.., Mar 2023 Favors healthy diet Favors control

The association of dietary approach to stop hypertension (DASH) diet with hospitalization risk in patients with COVID-19

Zamanian et al., Clinical Nutrition Open Science, doi:10.1016/j.nutos.2023.02.001
Mar 2023  
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Diet for COVID-19
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*, now known with p < 0.00000000001 from 28 studies.
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4,100+ studies for 60+ treatments.
Case control study with 53 inpatients and 88 outpatients in Iran, showing lower risk of hospitalization with increased adherence to the DASH (Dietary Approach to Stop Hypertension) diet. Increased intake of fruits, vegetables and low-fat dairy products, and lower intake of sodium and processed/red meat were significantly associated with reduced risk of hospitalization due to COVID-19.
risk of hospitalization, 81.0% lower, OR 0.19, p = 0.002, higher quality diet 41, lower quality diet 53, adjusted per study, case control OR, DASH ≥27 vs. ≤22, multivariable, model 3.
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Zamanian et al., 3 Mar 2023, retrospective, Iran, peer-reviewed, mean age 46.2, 10 authors. Contact:
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The association of dietary approach to stop hypertension (DASH) diet with hospitalization risk in patients with COVID-19
Ali Zamanian, Zahra Yari, Samira Soltanieh, Marieh Salavatizadeh, Sara Karimi, Sussan K Ardestani, Mohammadreza Salehi, Soodeh Razeghi Jahromi, Tooba Ghazanfari, Azita Hekmatdoost
Clinical Nutrition Open Science, doi:10.1016/j.nutos.2023.02.001
Background and aim: Given the importance of dietary habits in the immune system, the current study aimed at investigating the association between Dietary Approach to Stop Hypertension (DASH) diet and risk of hospitalization due to COVID-19. Methods: Dietary data of 141 patients with COVID-19 were collected using 147-item food frequency questionnaire. DASH score in this cross-sectional study was calculated based on eight components, including fruits, vegetables, legumes and nuts and seeds, whole grains, low-fat dairy, red or processed meats, sweetened beverages, and sodium. Multivariable logistic regression models were applied to estimate the OR and 95% CI for hospitalization due to COVID-19 in each tertile of DASH score. Results: Mean ± SD of DASH score in inpatients (n¼74) and outpatients (n¼ 87) was 22.5 ± 4.57 and 25.34 ± 4.23, respectively. The risk of hospitalization in the highest tertile of DASH score was 81% lower than the lowest tertile (OR¼0.19, 95%CI: 0.07e0.55, P trend ¼ 0.001 after adjustment for age, sex, BMI, energy intake). Also, more intake of fruits, vegetables and low-fat dairy products and less intake of sodium, red and processed meat were each
Conflict of interest The authors declare no conflict of interest.
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