Sunlight reduces COVID-19 risk: real-time meta-analysis of 6 studies (Version 5)

Covid Analysis, May 2026
Sunlight for COVID-19
35th treatment shown to reduce risk in December 2021, now with p = 0.0000011 from 6 studies.
Lower risk for mortality, hospitalization, recovery, and cases.
No treatment is 100% effective. Protocols combine treatments.
6,600+ studies for 220+ treatments. c19early.org
Meta-analysis
Significantly lower risk is seen for mortality, hospitalization, recovery, and cases. 6 studies from 6 independent teams in 4 countries show significant benefit.
Meta-analysis using the most serious outcome reported shows 39% [26‑50%] lower risk. Results are similar for Randomized Controlled Trials.
Control Sunlight
No treatment is 100% effective. Protocols combine safe and effective options with individual risk/benefit analysis and monitoring. Sunlight currently has no early treatment studies. Two studies are ecological studies reporting results per specified increases in UVA/sunlight exposure. All data and sources to reproduce this analysis are in the appendix.
Important missing comments or errors? Let us know.
Covid Analysis et al., May 2026, preprint, 1 author.
Please send us corrections, updates, or comments. c19early involves the extraction of 200,000+ 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. IMA and WCH provide treatment protocols.
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