Opinion

Since COVID started, brain fog has become an increasingly common concept. So what is it?

By Sarah Hellewell
October 30 2022 - 5:30am

The COVID pandemic has introduced many scientific and medical terms into our everyday language. Many of us are now fluent in conversations about viral strains, PCR tests and mortality rates. "Brain fog" has joined these ranks to describe a now-familiar symptom of COVID and long COVID.