What is brain fog? It's that frustrating mental cloudiness that leaves you struggling to concentrate, remember details, or ...

Brain fog causes fatigue, confusion, and focus issues, and can stem from issues with sleep, hormones, illness, or diet. Lifestyle changes and medical care can help restore clarity.

But when your brain feels like it’s lost in a dense fog all the time, you may start to worry. What you may be dealing with is brain fog. What brain fog feels like can vary from person to person.