Summary

Over the past year I’ve investigated potential interventions against respiratory illnesses. Previous results include “Enovid nasal spray is promising but understudied”, “Povidone iodine is promising but understudied” and “Humming will solve all your problems no wait it's useless”. Two of the iodine papers showed salt water doing as well or almost as well as iodine. I assume salt water has lower side effects, so that seemed like a promising thing to check. I still believe that, but that's about all I believe, because papers studying gargling salt water (without nasal irrigation) are few and far between.

I ended up finding only one new paper I thought valuable that wasn’t already included in my original review of iodine, and it focused on tap water, not salt water. It found a 30% drop in illness when gargling increased in frequency from 1 time per day to 3.6 [...]

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Outline:

(00:04) Summary

(01:20) Papers

(01:23) Estimating salivary carriage of severe acute respiratory syndrome coronavirus 2 in nonsymptomatic people and efficacy of mouthrinse in reducing viral load: A randomized controlled trial

(03:33) The short-term effect of different chlorhexidine forms versus povidone iodine mouth rinse in minimizing the oral SARS-CoV-2 viral load: An open label randomized controlled clinical trial study