U.S: Share of Population with Alzheimer's Disease, by age bracket
Age bracketShare of people with Alzheimers,
in %
65-74 years26.4
75-84 years38.6
85 years and over35.4
  • Region: United States
  • Time period: 2024
  • Published: Mar 2024

Data Analysis and Insights

Updated: Apr 2, 2024 | Published by: Statistico

Highest Prevalence of Alzheimer's in the 75-84 Age Bracket

The 75-84 years age group exhibits the highest share of people with Alzheimer's disease, standing at 38.6%. This indicates a significant increase in prevalence as individuals move from the 65-74 years age bracket, where the share is considerably lower at 26.4%. Such a sharp rise underscores the critical need for increased healthcare services and support mechanisms for individuals within this age group, highlighting the importance of targeted interventions and resources to address the surge in Alzheimer's cases among the elderly.

Decrease in Alzheimer's Share Beyond Age 85

Interestingly, the share of people with Alzheimer's decreases in the 85 years and over age group to 35.4%. This decline, from the peak prevalence seen in the 75-84 years age group, may reflect survival bias, where individuals more resistant to Alzheimer's or in better overall health survive longer. This decrease suggests a nuanced understanding of Alzheimer's progression and highlights the importance of focusing resources not only on prevention and early intervention but also on sustaining quality of life in the oldest populations.

Alzheimer's Prevalence More Than Doubles After 65

The data reveals a more than doubling in the share of people with Alzheimer's when comparing the youngest age group, 65-74 years, with a 26.4% share, to the oldest, 85 years and over, at 35.4%. This substantial increase underscores the exponential risk of developing Alzheimer's with advancing age, emphasizing the need for early detection, lifestyle interventions, and planning for healthcare needs as part of aging.

Continuous Growth in Alzheimer's Share Across Age Groups

There is a continuous growth in the share of people with Alzheimer's as age increases, from 26.4% in the 65-74 years age group to 38.6% in the 75-84 years age group. This pattern illustrates the progressive nature of Alzheimer's disease and its increasing impact on individuals as they age. It highlights the critical importance of ongoing research into Alzheimer's causes, treatment, and prevention strategies to mitigate its impact on the aging population.

Frequently Asked Questions

What age group has the highest prevalence of Alzheimer's disease?

The 75-84 years age group has the highest prevalence of Alzheimer's disease, with 38.6% of individuals in this group affected.

How does the Alzheimer's prevalence compare between the youngest and oldest age groups?

Alzheimer's prevalence more than doubles when comparing the youngest age group, 65-74 years with a 26.4% share, to the oldest, 85 years and over, at 35.4%.

Does the share of people with Alzheimer's change as age increases?

Yes, there is a continuous growth in the share of people with Alzheimer's as age increases, from 26.4% in the 65-74 years age group to 38.6% in the 75-84 years age group.

Terms and Definitions

Alzheimer's Disease is a progressive brain disorder that affects memory, thinking skills, and the ability to carry out simple tasks. It is characterized by the buildup of two types of abnormal protein fragments in the brain known as plaques and tangles, and a loss of connections between nerve cells (neurons) in the brain.

A progressive disease is a disease that worsens over time. In the context of Alzheimer's, this refers to the gradual worsening of cognitive functions, eventually leading to severe mental impairment.

Cognitive function refers to a person's mental abilities, including learning, thinking, problem-solving, memory, and attention among others. Alzheimer's disease notably affects cognitive function.

Prevalence refers to the total number of cases of a disease present in a population at a specific time, irrespective of when the disease first appeared. It is typically measured as a proportion of the population. The prevalence of Alzheimer's disease would refer to the number of people living with this condition.

Neurons, also known as nerve cells, are the primary cells of the nervous system. In Alzheimer's disease, these cells are damaged leading to the symptoms of the condition.

Plaques and tangles refer to two types of damage found in the brains of people with Alzheimer's disease, caused by deposits of protein (plaques) and twisted strands of another protein (tangles). These plaques and tangles are believed to cause the death of neurons, leading to the cognitive decline associated with Alzheimer's.
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