The brain runs on a delicate balance of hormones, neurotransmitters, sleep-driven repair, and steady blood flow to the prefrontal cortex. When one or more of these systems is disrupted, executive function and working memory are among the first abilities to suffer, because the prefrontal cortex is metabolically expensive and sensitive to change.
Common drivers include perimenopausal and menopausal hormonal shifts, chronic sleep debt, thyroid dysfunction, iron or B12 deficiency, chronic stress with elevated cortisol, post-viral inflammation such as long COVID, and untreated anxiety or depression. The National Institute on Aging notes that memory and concentration changes are common during the menopause transition and typically improve when contributing factors are addressed.
Because brain fog is a symptom, not a diagnosis, the first step is a careful history and appropriate lab work through your primary care visit to rule out treatable underlying causes. From there, we build a plan that supports your cognition rather than masking the symptom.
