What is one common cause of dementia?

Alzheimer's disease is widely recognized as the most common cause of dementia, accounting for a significant proportion of dementia cases in older adults. It is a progressive neurodegenerative disorder characterized by the gradual decline in memory and cognitive function, impacting daily living activities and overall quality of life. The pathology of Alzheimer's disease involves the accumulation of amyloid plaques and tau tangles in the brain, leading to neuronal damage and loss. This specific association with dementia is well-documented, making it a key focus in both clinical practice and research.

In contrast, while alcohol abuse can lead to cognitive impairments and may contribute to conditions such as alcohol-related dementia, it is not the leading cause. Acute stress disorder is a mental health condition that arises after exposure to a traumatic event and does not typically result in dementia. Traumatic brain injury may lead to cognitive issues as well, but it is not classified primarily as a cause of dementia in the same way that Alzheimer's disease is. Thus, the specificity and prevalence of Alzheimer's disease as a cause of dementia make it the primary answer in this context.