Cognitive health: Understanding brain fog and memory lapses

Common cognitive experiences such as forgetting why one entered a room are often linked to how the brain manages memory and attention during environmental changes. Moving between different spaces can act as a mental boundary, causing the brain to update active information and potentially interfering with immediate intentions. Distractions during these transitions can further exacerbate the issue.

Beyond momentary lapses, persistent brain fog—a feeling of mental cloudiness—affects a significant portion of the population, including an estimated third of people in Britain and two-thirds of menopausal women. Research from King's College London suggests that brain fog does not necessarily indicate physical brain impairment, as cognitive test performance often remains consistent between those experiencing fog and those who are not.

Experts suggest that these sensations may stem from lifestyle habits, stress, or nutritional deficiencies, such as low levels of vitamin B12 and iron. Other potential underlying causes include conditions that limit blood oxygen, such as asthma or chronic bronchitis. Neuroscientists recommend medical consultations to rule out underlying conditions and suggest strategies like mentally repeating intentions or writing down tasks to mitigate memory lapses.