Summary: Research shows that even mild cases of COVID-19 can lead to significant brain aging equivalent to seven years. Brain fog, a common post-COVID condition, causes mental sluggishness and difficulty concentrating. Studies reveal that COVID-19 impacts brain health in various ways, including cognitive deficits, brain inflammation, and memory loss. The long-term effects of COVID-19 on brain health, including cognitive decline and potential links to dementia, are a growing concern with implications for individuals and society as a whole.