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Health
Chronic stress raises cortisol levels, harming memory and focus by damaging the brain's memory center.
Chronic stress stands as a primary suspect behind forgetfulness, mental fog, and declining concentration, according to Dr. Marina Ivanova, a specialist in healthy nutrition for both adults and children. The culprit is cortisol, the stress hormone, which at persistently high levels actively sabotages the brain's ability to learn and recall information.
Dr. Ivanova explains that sustained cortisol elevation triggers measurable changes in the hippocampus—a brain region critical for forming new memories. While small doses of cortisol can energize the body, a chronically high level disrupts the brain's memory center and suppresses the prefrontal cortex, the area responsible for logical thinking and impulse control. Simultaneously, the brain's fear and anxiety centers become hyperactive, making it harder to focus, make decisions, and manage emotions.
Research has confirmed that a continuous rise in cortisol is linked to these structural alterations in the hippocampus, directly impairing memory formation.
The doctor further notes that stress nearly always accompanies sleep deprivation. This prevents the brain from fully recovering, as deep sleep is essential for clearing metabolic waste and toxins from brain tissue. The result is a vicious cycle: stress disrupts sleep, and lack of sleep amplifies stress while further eroding concentration.
