What brain fog is, and how to fix it?

“Brain fog” describes how people feel when their thinking is sluggish, fuzzy, or muddled.  While many people who have had COVID-19 report brain fog, there are other conditions that can cause it.  If you are experiencing brain fog, please consult your physician.  Special tests can help identify which areas of cognition may be involved.  Certain lifestyle changes may improve thinking and memory such as regular exercise, healthy eating, avoiding alcohol and drugs, good sleep, engaging in social activities, and learning new skills.