Endogenous Deficiency of Glutathione as the Most Likely Cause of Serious Manifestations and Death in COVID-19 Patients
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7263077/
Looks like it might be linked to Autism too.
https://www.foundationalmedicinereview.com/blog/the-benefits-of-glutathione-for-autism-go-beyond-controlling-inflammation/