Scientists find new link between genes and stress response, depression

Numerous studies have shown that the brain molecule neuropeptide Y (NPY) helps to restore calm after stressful events. A team of University of Michigan-led researchers has now found that people whose genes predispose them to produce lower levels of NPY are more responsive to negative stimuli in key brain circuits related to emotion – and are therefore less resilient in the face of stress and may be at higher risk for developing a major depressive disorder.

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