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Stress affects the brain and memory from "summary" of Why Zebras Don't Get Ulcers by Robert M. Sapolsky
When stress strikes, it doesn't just impact our bodies - it also takes a toll on our brains. Our brains are incredibly sensitive to stress, with certain brain regions being particularly vulnerable. The hippocampus, for example, is a crucial structure for memory formation, and stress can wreak havoc on its functioning. When stress hormones flood the brain, they can impair the hippocampus's ability to create new memories, leading to forgetfulness and cognitive decline. In addition to affecting memory, stress can also alter the structure of the brain itself. Chronic stress has been shown to shrink the prefrontal cortex, the part of the brain responsible for decision-making, impulse control, and emotional regulation. This can result in decreased cognitive flexibility and increased impulsivity, making it harder to navigate the complexities of daily life. Furthermore, stress can disrupt the communication between different brain regions, leading to a breakdown in neural networks. This can interfere with the brain's ability to process information efficiently, resulting in cognitive deficits and impaired decision-making. In essence, chronic stress can rewire the brain in ways that are detrimental to our mental health and cognitive functioning. Moreover, stress can trigger a cascade of inflammatory responses in the brain, further exacerbating cognitive decline. Inflammation is the brain's way of responding to stress, but when it becomes chronic, it can lead to long-term damage. Inflammation has been linked to a host of neurological disorders, including Alzheimer's disease and depression, highlighting the profound impact that stress can have on brain health.- Stress is not just a psychological phenomenon - it is a biological one that can have profound effects on the brain and memory. By understanding how stress affects the brain, we can better protect our cognitive health and well-being in the face of life's challenges.
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