PTSD: Morgan et al (2000)
Although most people recover from trauma, some do not. One possible explanation is biological. One of the most significant areas of research today is neuropeptide Y [NPY], which acts as a neurotransmitter found in high concentrations in the amygdala. NPY is released as part of the body’s response to stress and appears to help regulate and shut down the stress response once a threat has passed. Researchers believe...