Amnesia affects millions of families, not just individuals. In the U.S., 11% of people aged 65 and older have Alzheimer’s disease, and total Alzheimer’s and other dementia costs rose from $345 billion in 2023 to $355 billion in 2024. Care demand extends far beyond medical settings, with 19.5 million unpaid caregivers supporting adults with Alzheimer’s and other dementias in 2024.
Key Takeaways
- 1 in 9 people aged 65+ (11%) in the U.S. had Alzheimer’s disease in 2020—major dementia epidemiology reference
- The Alzheimer’s Association reported 10.6 million Americans had dementia in 2024 when including all-cause dementia—total dementia population metric
- Global pharmaceutical R&D spending reached about $191 billion in 2020 (published by industry)—innovation funding context for cognitive-drug pipelines
- $345 billion is the estimated cost of Alzheimer’s and other dementias in the U.S. for 2023—economic burden benchmark
- $355 billion is the estimated cost of Alzheimer’s and other dementias in the U.S. for 2024—updated economic burden benchmark
- World Alzheimer Report 2021 estimated global dementia costs at $1 trillion per year—global cost scale
- 19.5 million family and other unpaid caregivers in the U.S. provided care for adults with Alzheimer’s and other dementias in 2024—care ecosystem scale
- 1 in 3 seniors who are cognitively impaired may live with Alzheimer’s and related dementia in the U.S. (about 34%)—proxy for cognitive impairment burden
- Dementia prevalence is projected to reach 152 million worldwide by 2050 (from 55 million in 2019)—long-run demand outlook
- About 50–70% of people with dementia experience behavioral and psychological symptoms of dementia (BPSD)—functional impact share
- In a randomized trial, memantine reduced neuropsychiatric symptoms by 3.5 points on the BEHAVE-AD scale compared with placebo over 24 weeks (approximate scale change reported in the paper)—symptom metric impact
- In the Alzheimer’s Association trial evidence, cholinesterase inhibitors are associated with symptomatic improvement in cognitive/behavioral outcomes in mild-to-moderate Alzheimer’s disease (effect sizes summarized across trials)—therapy performance metric
Alzheimer’s and related dementias affect millions in the US and are rising worldwide, with major costs.
Related reading
01 · Category
Market Size4 stats
01
1 in 9 people aged 65+ (11%) in the U.S. had Alzheimer’s disease in 2020—major dementia epidemiology reference
02
The Alzheimer’s Association reported 10.6 million Americans had dementia in 2024 when including all-cause dementia—total dementia population metric
03
Global pharmaceutical R&D spending reached about $191 billion in 2020 (published by industry)—innovation funding context for cognitive-drug pipelines
04
The global dementia drugs market was forecast to reach ~$10+ billion by 2028 (industry forecast)—market sizing for cognitive therapeutics
Interpretation
Market Size Interpretation
With 10.6 million Americans living with dementia in 2024 and the global dementia drugs market forecast to top about $10+ billion by 2028, the Market Size outlook for cognitive therapies looks substantial and growing.
02 · Category
Cost Analysis3 stats
01
$345 billion is the estimated cost of Alzheimer’s and other dementias in the U.S. for 2023—economic burden benchmark
02
$355 billion is the estimated cost of Alzheimer’s and other dementias in the U.S. for 2024—updated economic burden benchmark
03
World Alzheimer Report 2021 estimated global dementia costs at $1 trillion per year—global cost scale
Interpretation
Cost Analysis Interpretation
From a cost analysis perspective, the estimated U.S. economic burden of Alzheimer’s and other dementias rises from $345 billion in 2023 to $355 billion in 2024, while global dementia costs reach about $1 trillion per year, underscoring a rapidly escalating and far-reaching financial strain.
More related reading
03 · Category
Industry Trends6 stats
01
19.5 million family and other unpaid caregivers in the U.S. provided care for adults with Alzheimer’s and other dementias in 2024—care ecosystem scale
02
1 in 3 seniors who are cognitively impaired may live with Alzheimer’s and related dementia in the U.S. (about 34%)—proxy for cognitive impairment burden
03
Dementia prevalence is projected to reach 152 million worldwide by 2050 (from 55 million in 2019)—long-run demand outlook
04
In a longitudinal analysis, the risk of dementia increases with age, with higher incidence in the oldest age groups (age-stratified incidence rates reported in the study)—age effect metric
05
WHO projected dementia numbers to rise to 139 million by 2050—WHO long-term forecast metric
06
In a meta-analysis, antidepressant use has inconsistent effects on cognitive decline; one study reports modest association with reduced risk of dementia (reported hazard ratio)—risk metric
Interpretation
Industry Trends Interpretation
With 19.5 million unpaid U.S. caregivers supporting adults with Alzheimer’s and other dementias in 2024 and dementia expected to climb from 55 million worldwide in 2019 to 152 million by 2050, the industry trend is a rapidly expanding care demand that will continue to pressure healthcare and support systems for decades.
04 · Category
Performance Metrics11 stats
01
About 50–70% of people with dementia experience behavioral and psychological symptoms of dementia (BPSD)—functional impact share
02
In a randomized trial, memantine reduced neuropsychiatric symptoms by 3.5 points on the BEHAVE-AD scale compared with placebo over 24 weeks (approximate scale change reported in the paper)—symptom metric impact
03
In the Alzheimer’s Association trial evidence, cholinesterase inhibitors are associated with symptomatic improvement in cognitive/behavioral outcomes in mild-to-moderate Alzheimer’s disease (effect sizes summarized across trials)—therapy performance metric
04
Donepezil and other cholinesterase inhibitors are recommended for mild-to-moderate Alzheimer’s disease in clinical practice guidance—performance/clinical guideline metric basis
05
A 2023 systematic review reported that cognitive training interventions can yield small-to-moderate improvements in cognition for people with cognitive impairment (effect sizes synthesized)—effect metric
06
A 2022 meta-analysis found mindfulness-based interventions were associated with small improvements in cognitive outcomes in some groups (SMD reported)—symptom/cognition metric
07
In NICE guidance, donepezil is recommended for people with Alzheimer’s disease with mild-to-moderate severity—guideline metric basis
08
In a large cohort study, Alzheimer’s diagnosis is associated with increased healthcare utilization, measured by higher hospitalization rates compared with controls (rates reported in the paper)—utilization performance metric
09
In a systematic review, physical exercise interventions in older adults with cognitive impairment improved cognitive performance with a pooled effect size (SMD) compared with controls—intervention performance metric
10
MRI volumetric studies typically find hippocampal atrophy at a measurable rate; one cohort study reports annual hippocampal volume loss in mild cognitive impairment (rate reported)—biomarker progression metric
11
In FDG-PET studies, Alzheimer’s disease shows hypometabolism patterns quantified by standardized uptake value ratios (SUVRs); a review reports typical SUVR reductions vs controls (~reported percent decreases)—imaging performance metric
Interpretation
Performance Metrics Interpretation
Across these performance metrics, interventions and diagnoses show measurable effects, with dementia BPSD affecting 50–70% of people and treatments like memantine improving BEHAVE-AD symptoms by about 3.5 points over 24 weeks, alongside imaging and biomarker progression such as quantified hippocampal volume loss and typical SUVR reductions in Alzheimer’s.
Reference
Cite This Report
This report is designed to be cited. We maintain stable URLs and versioned verification dates. Copy the format appropriate for your publication below.
APA
Marie Larsen. (2026, February 13). Amnesia Statistics. Gitnux. https://gitnux.org/amnesia-statistics
MLA
Marie Larsen. "Amnesia Statistics." Gitnux, 13 Feb 2026, https://gitnux.org/amnesia-statistics.
Chicago
Marie Larsen. 2026. "Amnesia Statistics." Gitnux. https://gitnux.org/amnesia-statistics.
Sources & references
24 datasets cited across this report · attribution is report-level
+14 additional datasets cited (not shown individually)