Overview

• Researchers found that serotonin levels were lower in people with long Covid.
• This serotonin depletion may explain cognitive issues and neurological symptoms of long Covid.
• Viral particles were found in blood and stool samples of long Covid patients.
• The findings suggest the serotonin pathway connects various theories on long Covid causes.
• A clinical trial will test if fluoxetine (Prozac) and tryptophan can treat long Covid.