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Correlational studies have found that individuals with posttraumatic stress disorder (PTSD) often exhibit a significant reduction in the volume of several parts of their hippocampus. It is important to note that this correlation does not definitively establish a causal relationship.

Reduced Hippocampal Volume in PTSD

The reduction in hippocampal volume observed in individuals with PTSD may be attributed to lower rates of neurogenesis, which is the creation of new neurons, and dendritic branching, the formation of new connections in existing neurons.

Potential Mechanisms for Hippocampal Volume Reduction in PTSD

In individuals with PTSD, treatments such as pharmacological or cognitive-behavioral therapy have been shown to correlate with both behavioral improvements and an increase in hippocampal volume.

Therapy's Effect on Hippocampal Volume in PTSD

A series of studies reveals that individuals diagnosed with posttraumatic stress disorder (PTSD) tend to have a smaller hippocampal volume compared to individuals without the disorder. Based on this correlational finding alone, what is the most accurate conclusion one can draw?

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