Early-life stress changed how brain cells responded to future challenges in mice, suggesting that adversity during development can leave lasting effects that become apparent when stress returns later in life
Researchers found that 75% of the stress-related changes in proteins that help control access to DNA were associated with genes being more open, active or ready for future use
Mice whose brains were primed during development showed stronger responses to adult stress, including altered gene activity, more easily activated dopamine neurons and behavioral signs of greater stress sensitivity
The affected brain cells weren't constantly overactive, showing that early adversity didn't simply lock the brain into a permanent stress response; the heightened reaction emerged when another stressor occurred
Your past doesn't determine your future response to stress; reducing chronic stress, protecting your sleep, allowing time for recovery and maintaining supportive relationships give you practical ways to better handle the pressures you face today
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