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Summary of COVID-19 sunlight studies

Studies   Meta Analysis   Hide extended summaries

30 patient sunlight RCT: 32% shorter hospitalization (p=0.02) and 38% faster recovery (p=0.0006).
RCT 30 hospitalized COVID-19 patients investigating the effectiveness of photobiomodulation (PBM) using a vest with near-infrared LEDs (simulating part of the sunlight spectrum). The treatment group showed shorter hospitalization, significant improvement in cardiopulmonary function, and improvements in leukocyte, neutrophil, and lymphocyte counts post-treatment. The treatment group had higher pneumonia severity at baseline. For more discussion see [youtube.com].

Dec 2022, J. Photochemistry and Photobiology B: Biology, https://www.sciencedirect.com/science/article/pii/S1011134422002342, https://c19p.org/pereira2

100 patient sunlight study: 58% fewer symptomatic cases (p=0.004).
Prospective study of 100 COVID-19 patients in South Africa, 50 with COVID-19 pneumonia and 50 asymptomatic, showing higher risk of symptomatic COVID-19 with lower exposure to sunlight, and with vitamin D deficiency. Sunlight exposure may be correlated with physical activity and may have additional benefits independent of vitamin D [sciencedirect.com].

Apr 2022, Southern African J. Infectious Diseases, https://sajid.co.za/index.php/sajid/article/view/359, https://c19p.org/kalichuransun

sunlight study: 32% lower mortality (p=0.004).
Analysis of UVA exposure and COVID-19 mortality in the USA, England, and Italy, showing increased UVA exposure associated with lower mortality.

Apr 2021, British J. Dermatology, https://onlinelibrary.wiley.com/doi/10.1111/bjd.20093, https://c19p.org/cherrie

240 patient sunlight study: 63% fewer cases (p=0.0002).
Analysis of 120 COVID-19 and 120 control patients in Iraq, showing lower risk of cases with regular sunlight exposure (3 times/week).

Dec 2021, Nat. Volatiles & Essent. Oils, https://www.nveo.org/index.php/journal/article/view/1046, https://c19p.org/jabbarsun

19,535 patient sunlight study: 23% fewer cases (p=0.0001).
Analysis of 39,915 patients with 1,768 COVID+ cases based on surveys in the Nurses' Health Study II, showing higher UVA/UVB exposure associated with lower risk of COVID-19 cases.

Dec 2021, The American J. Clinical Nutrition, https://academic.oup.com/ajcn/advance-article/doi/10.1093/ajcn/nqab389/6448988, https://c19p.org/ma2sun
Please send us corrections, updates, or comments. c19early involves the extraction of 100,000+ datapoints from thousands of papers. Community updates help ensure high accuracy. Treatments and other interventions are complementary. All practical, effective, and safe means should be used based on risk/benefit analysis. No treatment or intervention is 100% available and effective for all current and future variants. We do not provide medical advice. Before taking any medication, consult a qualified physician who can provide personalized advice and details of risks and benefits based on your medical history and situation. FLCCC and WCH provide treatment protocols.
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