Statistically significant lower risk is seen for ICU admission, hospitalization, progression, recovery, cases, and viral clearance. 24 studies from 23 independent teams in 10 countries show statistically significant improvements.
Meta analysis using the most serious outcome reported shows 50% [41‑58%] lower risk. Results are similar for higher quality studies.
Results are robust — in exclusion sensitivity analysis 26 of 28 studies must be excluded to avoid finding statistically significant efficacy in pooled analysis.
Studies analyze diet quality before infection, and use different definitions of diet quality.
No treatment or intervention is 100% effective. All practical, effective, and safe means should be used based on risk/benefit analysis.
All data to reproduce this paper and sources are in the appendix. Other meta analyses show significant improvements with diet for hospitalization Rahmati, severity Hao, and cases Hao, Rahmati.
2 meta analyses show significant improvements with diet for hospitalization
Rahmati,
severity
Hao, and
cases
Hao,
Rahmati.
Covid Analysis et al., Mar 2024, preprint, 1 author.