Causes of Mild Cognitive Impairment
Mild Cognitive Impairment (MCI) can be caused by various factors, some noticeable and others not as apparent. Traumatic brain injuries resulting from strokes can contribute to the development of MCI. Additionally, the presence of Lewy bodies, which are abnormal protein sacs that form in the nerves, can lead to MCI and eventually result in Parkinson’s disease.
The accumulation of certain proteins, such as beta-amyloid proteins and tau proteins, within the nerves can also be a cause of MCI and subsequent dementia. Moreover, brain shrinkage, particularly in the hippocampus region, has been associated with mild cognitive impairment.
The Role of the Hippocampus in Mild Cognitive Impairment (MCI)
The hippocampus, a vital structure in the brain, plays a crucial role in memory processes. In individuals with amnestic-type MCI, scans frequently reveal a deteriorating, damaged, or dysfunctional hippocampus. Research has shown that impaired hippocampal function hinders the brain’s ability to encode and retrieve memories effectively. Moreover, the functioning of the hippocampus is closely linked to the progression of MCI and the subsequent development of Alzheimer’s disease.