More studies need to be done to establish causation.
In 2020, nearly 25 million individuals globally grappled with essential tremor, a neurological condition characterized by involuntary movements or shaking of certain body parts. Unfortunately, there is no known cure for essential tremor, and as the disorder progresses, it can significantly hinder everyday activities such as writing, eating, and personal hygiene.
Research indicates that individuals with essential tremor face an elevated risk of developing various conditions, including Parkinson’s disease, depression, sleep disorders, cardiovascular disease, and hearing impairments. Now, a study conducted by researchers from the University of Texas Southwestern Medical Center has shed light on another concerning association: individuals with essential tremor may be three times more likely to develop dementia than the general population.
The study, which involved 222 participants with essential tremor, revealed alarming findings. Over an average follow-up period of five years, 19% of participants either had or developed dementia, a rate significantly higher than that observed in the general population. Furthermore, every year, approximately 12% of participants initially diagnosed with mild cognitive impairment progressed to dementia.
Dr. Elan D. Louis, the lead author of the study, emphasized the impact of essential tremor on cognitive health. He noted that while essential tremor commonly manifests as mild tremors, it can severely affect individuals’ ability to perform daily tasks and may also heighten the risk of dementia development.
These findings align with previous research indicating a link between essential tremor and cognitive issues. Studies have shown that individuals with essential tremor face a 60% increased risk of developing dementia and experience a higher mortality rate. Cognitive dysfunction in individuals with essential tremor has also been associated with an increased risk of falls and balance issues.
Dr. Louis highlighted the importance of educating individuals with essential tremor and their families about the heightened risk of dementia and potential lifestyle adjustments that may accompany the diagnosis. He emphasized the need for continued research to deepen our understanding of the underlying mechanisms and potential treatments for cognitive impairment in individuals with essential tremor.
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