Hyperbaric oxygen therapy (HBOT) significantly improved the condition of 37 patients suffering from post-COVID-19 cognitive symptoms. The clinical trial was conducted by the Sagol Center for Hyperbaric Medicine and Research at Shamir Medical Center and Tel Aviv University.

https://www.globenewswire.com/en/news-release/2022/07/12/2478286/0/en/Effective-treatment-is-now-available-for-millions-suffering-with-long-COVID-symptoms.html

https://www.nature.com/articles/s41598-022-15565-0