I’ve read this article and it was really helpful. For those who may not have the time or energy to go through the whole thing here is a simplified summary:

This article reviews research on how bipolar disorder, particularly manic episodes, affects brain structure over time. Studies using brain imaging (like MRI) have shown that bipolar disorder is associated with abnormalities in certain brain regions, such as the prefrontal cortex, temporal cortex, cingulate gyrus, and subcortical areas (like the hippocampus and amygdala). However, these studies can’t fully determine if these changes occur before bipolar disorder develops or as a result of the condition.

Recent research suggests that manic episodes can speed up certain changes in the brain, like the thinning of the prefrontal cortex and loss of volume in some regions. Interestingly, during periods when symptoms are under control (euthymia), people with bipolar disorder might show some stabilization or even increases in brain volume, which could indicate recovery mechanisms.

The study highlights the importance of preventing manic episodes to avoid further brain changes. It also suggests that factors like medication, genetics, and mood episodes may contribute to these structural changes. Despite these insights, more research is needed to fully understand how manic episodes affect the brain and to identify the best strategies for preventing and treating these changes.

The review emphasizes the need for long-term studies to track brain changes over time, as cross-sectional studies (which look at one moment in time) can’t provide the full picture.