Which is the most common cause of dementia in older adults?

Which is the most common cause of dementia in older adults?

• A. Mental health disorders
• B. Being neglected by family members
• C. Alzheimer's disease
• D. Exposure to radiation

Answer: (C)

Alzheimer's disease is the most common cause of dementia in older adults. It’s a progressive brain disorder where nerve cells deteriorate and die, leading to steadily worsening memory, thinking, and daily functioning. Because it accounts for the largest share of dementia cases among the elderly, it’s identified as the primary cause. Other options don’t fit as the leading cause: mental health disorders can affect mood and cognition but don’t produce the characteristic gradual brain changes of dementia; neglect by family members doesn’t cause dementia; exposure to radiation isn’t the typical cause of dementia in aging, though severe brain injuries or toxins can cause separate cognitive problems. Understanding that Alzheimer's is the predominant cause helps guide monitoring for memory changes, safety planning, and appropriate care strategies.

Alzheimer's disease is the most common cause of dementia in older adults. It’s a progressive brain disorder where nerve cells deteriorate and die, leading to steadily worsening memory, thinking, and daily functioning. Because it accounts for the largest share of dementia cases among the elderly, it’s identified as the primary cause. Other options don’t fit as the leading cause: mental health disorders can affect mood and cognition but don’t produce the characteristic gradual brain changes of dementia; neglect by family members doesn’t cause dementia; exposure to radiation isn’t the typical cause of dementia in aging, though severe brain injuries or toxins can cause separate cognitive problems. Understanding that Alzheimer's is the predominant cause helps guide monitoring for memory changes, safety planning, and appropriate care strategies.