Brain fog after COVID-19 can last for years: new study data

A recent study found that recovering cognitive functions after suffering from Covid-19 can be a prolonged process. The participants included 1553 adults who had contracted the coronavirus. Over three and a half years, they underwent specialized testing that assessed various aspects of cognitive functions. Researchers noted that memory and verbal learning were recovering best, while processing speed remained impaired in many patients even years after the illness.

A new study from researchers at Mount Sinai Health System has shown that cognitive impairments caused by Covid-19 can persist in patients for a long time. While some brain functions may improve over time, others may remain damaged for several years after the illness.

Main findings of the study

• Memory: Verbal learning and memory recover best, returning to normal in most participants.
• Processing speed: The worst recovery is seen in information processing speed and cognitive flexibility, which remain below average even after 42 months post-illness.
• Impact on recovery: The only factor affecting the recovery speed is body mass index. People with a normal weight recover better. Other factors such as age, gender, severity of illness, and vaccination do not affect the recovery speed.

The results of this study highlight the importance of understanding the duration of cognitive impairments after recovering from Covid-19. Medical communities should consider this issue when developing rehabilitation and support programs for patients. Therefore, brain fog after the coronavirus may linger for a long time after recovery, and this should be taken into account in future patient care.