Vitamin D supplementation benefits COVID-19: A systematic review and meta-analysis

Yang et al., Heliyon, doi:10.1016/j.heliyon.2026.e44988, PROSPERO CRD42022367684, May 2026
Vitamin D for COVID-19
8th treatment shown to reduce risk in October 2020, now with p < 0.00000000001 from 138 studies, recognized in 18 countries.
No treatment is 100% effective. Protocols combine treatments.
6,600+ studies for 220+ treatments. c19early.org
Systematic review and meta-analysis of 20 RCTs (n = 2,756) showing significantly lower mortality and ICU admission with vitamin D treatment for COVID-19.
22 meta-analyses show significant improvements with vitamin D treatment for mortality1-15, mechanical ventilation1,5,6,11,16-18, ICU admission1,3,5,6,9,11,13,15-21, hospitalization11, severity2,4,5,10,22, and cases7,20,22.
Currently there are 138 vitamin D treatment for COVID-19 studies, showing 39% lower mortality [32‑45%], 17% lower ventilation [-5‑35%], 45% lower ICU admission [28‑57%], 22% lower hospitalization [13‑30%], and 18% fewer cases [10‑25%].
Yang et al., 13 May 2026, China, peer-reviewed, 4 authors, study period November 2022 - December 2025, trial PROSPERO CRD42022367684. Contact: houning196@163.com.
Abstract: Research article Vitamin D supplementation benefits COVID-19: A systematic review and meta-analysis Shuangshuang Yang a,b,c , Ke Xu a , Shushu Lu d , Ning Hou a,* - a Shandong Provincial Hospital Affiliated to Shandong First Medical University, Shandong Province, China - b Maternal and Child Care Centre of Dezhou, Shandong Province, China - c Graduate Department, Shandong First Medical University (Shandong Academy of Medical Sciences), Shandong Province, China d Shandong Mental Health Center, Shandong Province, China A R T I C L E I N F O Keywords: COVID-19 Vitamin D Immunity Mortality rate ICU admission rate Length of hospital stay
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J. Infect. Dis.", "key": "10.1016/j.heliyon.2026.e44988_bib2", "volume": "166", "year": "2026" }, { "DOI": "10.1007/s11154-021-09679-5", "article-title": "Vitamin D, infections and immunity", "author": "Ismailova", "doi-asserted-by": "crossref", "first-page": "265", "issue": "2", "journal-title": "Rev. Endocr. Metab. Disord.", "key": "10.1016/j.heliyon.2026.e44988_bib6", "volume": "23", "year": "2022" }, { "DOI": "10.4049/jimmunol.164.5.2405", "article-title": "1 alpha,25-dihydroxyvitamin D3 inhibits differentiation, maturation, activation, and survival of dendritic cells leading to impaired alloreactive T cell activation", "author": "Penna", "doi-asserted-by": "crossref", "first-page": "2405", "issue": "5", "journal-title": "J. Immunol.", "key": "10.1016/j.heliyon.2026.e44988_bib7", "volume": "164", "year": "2000" }, { "DOI": "10.3390/nu10111656", "article-title": "Vitamin D: nutrient, hormone, and immunomodulator", "author": "Sassi", "doi-asserted-by": "crossref", "first-page": "1656", "issue": "11", "journal-title": "Nutrients", "key": "10.1016/j.heliyon.2026.e44988_bib8", "volume": "10", "year": "2018" }, { "DOI": "10.3390/nu5072502", "article-title": "Vitamin D and immune function", "author": "Prietl", "doi-asserted-by": "crossref", "first-page": "2502", "issue": "7", "journal-title": "Nutrients", "key": "10.1016/j.heliyon.2026.e44988_bib9", "volume": "5", "year": "2013" }, { "DOI": "10.1371/journal.ppat.1008874", "article-title": "Exploring links between vitamin D deficiency and COVID-19", "author": "Mohan", "doi-asserted-by": "crossref", "issue": "9", "journal-title": "PLoS Pathog.", "key": "10.1016/j.heliyon.2026.e44988_bib10", "volume": "16", "year": "2020" }, { "DOI": "10.3390/nu12113361", "article-title": "Evidence regarding vitamin D and risk of COVID-19 and its severity", "author": "Mercola", "doi-asserted-by": "crossref", "first-page": "3361", "issue": "11", "journal-title": "Nutrients", "key": "10.1016/j.heliyon.2026.e44988_bib11", "volume": "12", "year": "2020" }, { "article-title": "Interpretation of practice guidelines on clinical issues related to vitamin D nutrition in Chinese children", "author": "Zhang", "first-page": "5", "issue": "5", "journal-title": "Chinese Journal of Pediatrics", "key": "10.1016/j.heliyon.2026.e44988_bib12", "volume": "60", "year": "2022" }, { "article-title": "Analysis of serum 25-hydroxyvitamin D levels and related factors in 4,311 cases of physical examination in a tertiary hospital in Hefei", "author": "Gao", "first-page": "1304", "issue": "8", "journal-title": "Chinese Family Medicine", "key": "10.1016/j.heliyon.2026.e44988_bib13", "volume": "21", "year": "2023" }, { "DOI": "10.1530/EJE-20-0665", "article-title": "Mechanisms in endocrinology: vitamin D and COVID-19", "author": "Bilezikian", "doi-asserted-by": "crossref", "first-page": "R133", "issue": "5", "journal-title": "Eur. J. Endocrinol.", "key": "10.1016/j.heliyon.2026.e44988_bib14", "volume": "183", "year": "2020" }, { "article-title": "Could vitamin D supplementation play a role against COVID-19?", "author": "Li", "journal-title": "Front. Immunol.", "key": "10.1016/j.heliyon.2026.e44988_bib15", "volume": "13", "year": "2022" }, { "DOI": "10.1136/bmj.d5928", "article-title": "The Cochrane Collaboration's tool for assessing risk of bias in randomised trials", "author": "Higgins", "doi-asserted-by": "crossref", "journal-title": "Br. Med. J.", "key": "10.1016/j.heliyon.2026.e44988_bib16", "volume": "343", "year": "2011" }, { "author": "Higgins", "key": "10.1016/j.heliyon.2026.e44988_bib17", "series-title": "Cochrane Handbook for Systematic Reviews of Interventions", "year": "2024" }, { "article-title": "Statistical formulae for calculating some 95% confidence intervals", "author": "Hackshaw", "first-page": "205", "key": "10.1016/j.heliyon.2026.e44988_bib18", "series-title": "A Concise Guide to Clinical Trials", "year": "2009" }, { "DOI": "10.1186/s13063-023-07114-5", "article-title": "Effect of vitamin D supplementation versus placebo on recovery delay among COVID-19 Tunisian patients: a randomized-controlled clinical trial", "author": "Abroug", "doi-asserted-by": "crossref", "first-page": "123", "issue": "1", "journal-title": "Trials", "key": "10.1016/j.heliyon.2026.e44988_bib19", "volume": "24", "year": "2023" }, { "DOI": "10.1371/journal.pmed.1003999", "article-title": "High-dose versus standard-dose vitamin D supplementation in older adults with COVID-19 (COVIT-TRIAL): a multicenter, open-label, randomized controlled superiority trial", "author": "Annweiler", "doi-asserted-by": "crossref", "issue": "5", "journal-title": "PLoS Med.", "key": "10.1016/j.heliyon.2026.e44988_bib20", "volume": "19", "year": "2022" }, { "DOI": "10.1038/s41598-022-22045-y", "article-title": "Effect of vitamin D3 supplementation on cellular immunity and inflammatory markers in COVID-19 patients admitted to the ICU", "author": "Bychinin", "doi-asserted-by": "crossref", "issue": "1", "journal-title": "Sci. Rep.", "key": "10.1016/j.heliyon.2026.e44988_bib21", "volume": "12", "year": "2022" }, { "DOI": "10.1186/s12916-022-02290-8", "article-title": "A single-oral bolus of 100,000 IU of cholecalciferol at hospital admission did not improve outcomes in COVID-19 disease: the COVID-VIT-D—a randomised multicentre international clinical trial", "author": "Cannata-Andía", "doi-asserted-by": "crossref", "first-page": "83", "issue": "1", "journal-title": "BMC Med.", "key": "10.1016/j.heliyon.2026.e44988_bib22", "volume": "20", "year": "2022" }, { "DOI": "10.3390/nu14153048", "article-title": "Positive effects of vitamin D supplementation in patients hospitalized for COVID-19: a randomized, double-blind, placebo-controlled trial", "author": "De Niet", "doi-asserted-by": "crossref", "first-page": "3048", "issue": "15", "journal-title": "Nutrients", "key": "10.1016/j.heliyon.2026.e44988_bib23", "volume": "14", "year": "2022" }, { "DOI": "10.1186/s12906-024-04393-6", "article-title": "Impact of vitamin D supplementation on the clinical outcomes of COVID-19 pneumonia patients: a single-center randomized controlled trial", "author": "Dilokpattanamongkol", "doi-asserted-by": "crossref", "first-page": "97", "issue": "1", "journal-title": "BMC Complement. Med. Ther.", "key": "10.1016/j.heliyon.2026.e44988_bib24", "volume": "24", "year": "2024" }, { "DOI": "10.3390/nu15051234", "article-title": "Vitamin D supplementation and clinical outcomes in severe COVID-19 patients-randomized controlled trial", "author": "Domazet Bugarin", "doi-asserted-by": "crossref", "first-page": "1234", "issue": "5", "journal-title": "Nutrients", "key": "10.1016/j.heliyon.2026.e44988_bib25", "volume": "15", "year": "2023" }, { "DOI": "10.3389/fimmu.2025.1593200", "article-title": "Impact of vitamin D supplementation in the prognosis of patients with SARS-CoV2 pneumonia admitted to the intensive care unit - a randomized controlled trial", "author": "Gonçalves", "doi-asserted-by": "crossref", "journal-title": "Front. Immunol.", "key": "10.1016/j.heliyon.2026.e44988_bib26", "volume": "16", "year": "2025" }, { "DOI": "10.5812/jcp-138083", "article-title": "Efficacy of vitamin D as adjuvant therapy for treatment of hospitalized children with COVID-19: a randomized clinical trial", "author": "Hashemian", "doi-asserted-by": "crossref", "issue": "4", "journal-title": "J. Compr. Pediatr.", "key": "10.1016/j.heliyon.2026.e44988_bib27", "volume": "14", "year": "2023" }, { "DOI": "10.3390/biomedicines11051277", "article-title": "Effect of single high dose vitamin D substitution in hospitalized COVID-19 patients with vitamin D deficiency on length of hospital stay", "author": "Jaun", "doi-asserted-by": "crossref", "first-page": "1277", "issue": "5", "journal-title": "Biomedicines", "key": "10.1016/j.heliyon.2026.e44988_bib28", "volume": "11", "year": "2023" }, { "DOI": "10.3390/nu14132602", "article-title": "Effect of cholecalciferol supplementation on the clinical features and inflammatory markers in hospitalized COVID-19 patients: a randomized, open-label, single-center study", "author": "Karonova", "doi-asserted-by": "crossref", "first-page": "2602", "issue": "13", "journal-title": "Nutrients", "key": "10.1016/j.heliyon.2026.e44988_bib29", "volume": "14", "year": "2022" }, { "DOI": "10.1371/journal.pone.0267918", "article-title": "High-dose vitamin D versus placebo to prevent complications in COVID-19 patients: Multicentre randomized controlled clinical trial", "author": "Mariani", "doi-asserted-by": "crossref", "issue": "5", "journal-title": "PLoS One", "key": "10.1016/j.heliyon.2026.e44988_bib30", "volume": "17", "year": "2022" }, { "DOI": "10.1016/j.cdnut.2023.101971", "article-title": "Vitamin D and zinc supplementation to improve treatment outcomes among COVID-19 patients in India: results from a double-blind randomized placebo-controlled trial", "author": "Partap", "doi-asserted-by": "crossref", "issue": "8", "journal-title": "Curr. Dev. Nutr.", "key": "10.1016/j.heliyon.2026.e44988_bib31", "volume": "7", "year": "2023" }, { "DOI": "10.1136/postgradmedj-2020-139065", "article-title": "Short term, high-dose vitamin D supplementation for COVID-19 disease: a randomised, placebo-controlled study (SHADE study)", "author": "Rastogi", "doi-asserted-by": "crossref", "first-page": "87", "issue": "1156", "journal-title": "Postgrad. Med. J.", "key": "10.1016/j.heliyon.2026.e44988_bib32", "volume": "98", "year": "2022" }, { "DOI": "10.3390/nu13072170", "article-title": "Effects of a 2-week 5000 IU versus 1000 IU vitamin D3 supplementation on recovery of symptoms in patients with mild to moderate Covid-19: a randomized clinical trial", "author": "Sabico", "doi-asserted-by": "crossref", "first-page": "2170", "issue": "7", "journal-title": "Nutrients", "key": "10.1016/j.heliyon.2026.e44988_bib33", "volume": "13", "year": "2021" }, { "DOI": "10.3390/jcm10112378", "article-title": "Vitamin D levels in COVID-19 outpatients from Western Mexico: clinical correlation and effect of its supplementation", "author": "Sánchez-Zuno", "doi-asserted-by": "crossref", "first-page": "2378", "issue": "11", "journal-title": "J. Clin. Med.", "key": "10.1016/j.heliyon.2026.e44988_bib34", "volume": "10", "year": "2021" }, { "DOI": "10.3390/medicina58101358", "article-title": "Evidence for the efficacy of a high dose of vitamin D on the hyperinflammation state in moderate-to-severe COVID-19 patients: a randomized clinical trial", "author": "Sarhan", "doi-asserted-by": "crossref", "first-page": "1358", "issue": "10", "journal-title": "Medicina (Kaunas)", "key": "10.1016/j.heliyon.2026.e44988_bib35", "volume": "58", "year": "2022" }, { "DOI": "10.1093/pubmed/fdae007", "article-title": "Therapeutic high-dose vitamin D for vitamin D-deficient severe COVID-19 disease: randomized, double-blind, placebo-controlled study (SHADE-S)", "author": "Singh", "doi-asserted-by": "crossref", "first-page": "256", "issue": "2", "journal-title": "J. Public Health", "key": "10.1016/j.heliyon.2026.e44988_bib36", "volume": "46", "year": "2024" }, { "DOI": "10.5812/jkums-140510", "article-title": "Effect of high-dose vitamin D on mortality and hospital length of stay in ICU patients with COVID-19: a randomized clinical trial", "author": "Zamanian", "doi-asserted-by": "crossref", "issue": "1", "journal-title": "J. Kerman Univ. Med. Sci.", "key": "10.1016/j.heliyon.2026.e44988_bib37", "volume": "28", "year": "2024" }, { "DOI": "10.3389/fped.2022.943529", "article-title": "Efficacy and safety of vitamin D supplementation in hospitalized COVID-19 pediatric patients: a randomized controlled trial", "author": "Zurita-Cruz", "doi-asserted-by": "crossref", "journal-title": "Front. Pediatr.", "key": "10.1016/j.heliyon.2026.e44988_bib38", "volume": "10", "year": "2022" }, { "DOI": "10.1093/advances/nmab012", "article-title": "Association of vitamin D status with SARS-CoV-2 infection or COVID-19 severity: a systematic review and meta-analysis", "author": "Kazemi", "doi-asserted-by": "crossref", "first-page": "1636", "issue": "5", "journal-title": "Adv. Nutr.", "key": "10.1016/j.heliyon.2026.e44988_bib39", "volume": "12", "year": "2021" }, { "DOI": "10.3390/nu14102134", "article-title": "Effects of vitamin D supplementation on COVID-19 related outcomes: a systematic review and meta-analysis", "author": "Hosseini", "doi-asserted-by": "crossref", "first-page": "2134", "issue": "10", "journal-title": "Nutrients", "key": "10.1016/j.heliyon.2026.e44988_bib40", "volume": "14", "year": "2022" }, { "DOI": "10.1080/10408398.2020.1841090", "article-title": "Vitamin D deficiency aggravates COVID-19: systematic review and meta-analysis", "author": "Pereira", "doi-asserted-by": "crossref", "first-page": "1308", "issue": "5", "journal-title": "Crit. Rev. Food Sci. Nutr.", "key": "10.1016/j.heliyon.2026.e44988_bib41", "volume": "62", "year": "2022" }, { "DOI": "10.1210/clinem/dgab892", "article-title": "Prognostic and therapeutic role of vitamin D in COVID-19: systematic review and meta-analysis", "author": "Dissanayake", "doi-asserted-by": "crossref", "first-page": "1484", "issue": "5", "journal-title": "J. Clin. Endocrinol. Metab.", "key": "10.1016/j.heliyon.2026.e44988_bib42", "volume": "107", "year": "2022" }, { "DOI": "10.1016/j.ijid.2020.12.077", "article-title": "Low vitamin D status is associated with coronavirus disease 2019 outcomes: a systematic review and meta-analysis", "author": "Liu", "doi-asserted-by": "crossref", "first-page": "58", "journal-title": "Int. J. Infect. Dis.", "key": "10.1016/j.heliyon.2026.e44988_bib43", "volume": "104", "year": "2021" }, { "DOI": "10.1016/j.jsbmb.2021.105883", "article-title": "Therapeutic and prognostic role of vitamin D for COVID-19 infection: a systematic review and meta-analysis of 43 observational studies", "author": "Petrelli", "doi-asserted-by": "crossref", "journal-title": "J. Steroid Biochem. Mol. Biol.", "key": "10.1016/j.heliyon.2026.e44988_bib44", "volume": "211", "year": "2021" }, { "article-title": "Guidelines for the diagnosis and treatment of primary osteoporosis", "first-page": "1671", "issue": "14", "journal-title": "Chinese General Practice", "key": "10.1016/j.heliyon.2026.e44988_bib45", "volume": "26", "year": "2022" }, { "DOI": "10.1007/s40520-020-01678-x", "article-title": "Vitamin D supplementation: upper limit for safety revisited?", "author": "Rizzoli", "doi-asserted-by": "crossref", "first-page": "19", "issue": "1", "journal-title": "Aging Clin. Exp. Res.", "key": "10.1016/j.heliyon.2026.e44988_bib46", "volume": "33", "year": "2021" }, { "DOI": "10.1007/s00198-012-1944-7", "article-title": "Effect of oral cholecalciferol 2,000 versus 5,000 IU on serum vitamin D, PTH, bone and muscle strength in patients with vitamin D deficiency", "author": "Diamond", "doi-asserted-by": "crossref", "first-page": "1101", "issue": "3", "journal-title": "Osteoporos. Int.", "key": "10.1016/j.heliyon.2026.e44988_bib47", "volume": "24", "year": "2013" }, { "DOI": "10.1111/all.15136", "article-title": "Nutrient supplementation for prevention of viral respiratory tract infections in healthy subjects: a systematic review and meta-analysis", "author": "Vlieg-Boerstra", "doi-asserted-by": "crossref", "first-page": "1373", "issue": "5", "journal-title": "Allergy", "key": "10.1016/j.heliyon.2026.e44988_bib49", "volume": "77", "year": "2022" }, { "DOI": "10.1136/bmjgh-2020-003176", "article-title": "Effect of micronutrient supplements on influenza and other respiratory tract infections among adults: a systematic review and meta-analysis", "author": "Abioye", "doi-asserted-by": "crossref", "issue": "1", "journal-title": "BMJ Glob. Health", "key": "10.1016/j.heliyon.2026.e44988_bib50", "volume": "6", "year": "2021" }, { "DOI": "10.1002/rmv.1909", "article-title": "Vitamin D modulation of innate immune responses to respiratory viral infections", "author": "Zdrenghea", "doi-asserted-by": "crossref", "issue": "1", "journal-title": "Rev. Med. Virol.", "key": "10.1016/j.heliyon.2026.e44988_bib51", "volume": "27", "year": "2017" }, { "DOI": "10.3390/nu15112588", "article-title": "The vitamin D serum levels in pregnant women affected by COVID-19: a systematic review and meta-analysis", "author": "Szarpak", "doi-asserted-by": "crossref", "first-page": "2588", "issue": "11", "journal-title": "Nutrients", "key": "10.1016/j.heliyon.2026.e44988_bib52", "volume": "15", "year": "2023" }, { "DOI": "10.3390/nu15041052", "article-title": "COVID-19 in pregnancy: influence of body weight and nutritional status on maternal and pregnancy outcomes-a review of literature and meta-analysis", "author": "Attini", "doi-asserted-by": "crossref", "first-page": "1052", "issue": "4", "journal-title": "Nutrients", "key": "10.1016/j.heliyon.2026.e44988_bib53", "volume": "15", "year": "2023" } ], "reference-count": 48, "references-count": 48, "relation": {}, "resource": { "primary": { "URL": "https://linkinghub.elsevier.com/retrieve/pii/S2405844026004998" } }, "score": 1, "short-title": [], "source": "Crossref", "subject": [], "subtitle": [], "title": "Vitamin D supplementation benefits COVID-19: A systematic review and meta-analysis", "type": "journal-article", "update-policy": "https://doi.org/10.1016/elsevier_cm_policy", "volume": "12" }
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