By 2058, dementia cases are expected to...

By 2058, dementia cases are expected to...

• A. Double
• B. Stay about the same
• C. More than double
• D. Decline slightly

Answer: (C)

The main idea here is that dementia trends are largely shaped by population aging. As more people live to older ages, where dementia risk is higher, the total number of dementia cases rises even if the risk at each age stays the same. In Australia and globally, the aging population means the number of people with dementia is projected to grow substantially, and it is widely expected to be more than double by 2058. This reflects both more people reaching older ages and the shifting age structure, rather than a static or declining burden. The other possibilities would imply little or no growth, which contradicts the expected impact of aging populations and longer life expectancy on dementia prevalence.

The main idea here is that dementia trends are largely shaped by population aging. As more people live to older ages, where dementia risk is higher, the total number of dementia cases rises even if the risk at each age stays the same. In Australia and globally, the aging population means the number of people with dementia is projected to grow substantially, and it is widely expected to be more than double by 2058. This reflects both more people reaching older ages and the shifting age structure, rather than a static or declining burden. The other possibilities would imply little or no growth, which contradicts the expected impact of aging populations and longer life expectancy on dementia prevalence.