Long-COVID Sequelae, Brain Fog Phenomenon is Like Aging 10 Years Old Amélie Poulain2023-07-3101.4K views After COVID-19 subsided, people resumed traveling and living without masks. But some people are still affected by “brain fog”, persistent symptoms such as inability to concentrate and memory loss. The latest research in the UK has found that brain fog can make people look as old as 10 years old, and at the same time cause cognitive impairment. Read more