Even a mild case of COVID-19 could have effects on your brain. In a new study published Monday in the journal Nature, researchers found that the brains of those who had COVID-19 saw a greater loss of gray matter and abnormalities in the brain tissue compared to those who didn't have COVID-19. Many of those changes were in the area of the brain associated with sense of smell. Additionally, the study found a small loss in the brain’s overall volume The study notes that it's normal for people to lo