Evidence map›Paper›PMID 40389943›Full record

ArticleBMC psychiatry2025

Global mortality, prevalence and disability-adjusted life years of Alzheimer's disease and other dementias in adults aged 60 years or older, and the impact of the COVID-19 pandemic: a comprehensive analysis for the global burden of disease 2021.

Dong-Ting Yu, Rui-Xuan Li, Jing-Ran Sun, Xue-Wen Rong, Xu-Guang Guo, Guo-Dong Zhu

Abstract read
In one paragraph

Article in BMC psychiatry, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 31 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
31citing papers in PubMed, 2 pooled it
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

31 citing papers in PubMed, 2 syntheses or guidelines pooled it.

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  19. The active construction of past episodes.Translational neuroscience · 2026
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

6 authors.

Dong-Ting Yu *Institute of Gerontology, Guangzhou Geriatric Hospital, Guangzhou Medical University, Guangzhou, 511495, China.
Rui-Xuan Li *Institute of Gerontology, Guangzhou Geriatric Hospital, Guangzhou Medical University, Guangzhou, 511495, China.
Jing-Ran SunNanshan School, Guangzhou Medical University, Guangzhou, 511436, China.
Xue-Wen RongNanshan School, Guangzhou Medical University, Guangzhou, 511436, China.
Xu-Guang GuoInstitute of Gerontology, Guangzhou Geriatric Hospital, Guangzhou Medical University, Guangzhou, 511495, China. gysygxg@gmail.com.
Guo-Dong ZhuInstitute of Gerontology, Guangzhou Geriatric Hospital, Guangzhou Medical University, Guangzhou, 511495, China. gzhu17@gzhmu.edu.cn.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveAlzheimer's disease (AD) and other dementias are major public health concerns with an increasing global impact. The burden of these conditions varies by region, age, and gender, and the COVID-19 pandemic has further exacerbated these disparities, potentially influencing disease prevalence, mortality, and disability burden. This study aimed to assess the global and regional burden and trends of Alzheimer's disease and other dementias in adults aged 60 years or older from 1990 to 2021, with a particular focus on the impact of the COVID-19 pandemic on mortality, prevalence, and disability-adjusted life years.

methodsUsing Global Burden of Disease (GBD 2021) data, we analyzed age-standardized death rates (ASDR), incidence rates (ASIR), prevalence rates (ASPR), and disability-adjusted life years (DALYs) from 1990 to 2021. Temporal trends were assessed using the Estimated Annual Percentage Change (EAPC). Projections were modeled using Bayesian Age-Period-Cohort (BAPC) techniques. We evaluated excess mortality by comparing actual versus expected deaths during the pandemic. Decomposition analysis examined the contributions of population growth, aging, and epidemiological shifts. We analyzed health inequality to highlight and address disparities in health status and resource access across regions. All plots and tables were created using Joinpoint Regression model (Version 4.8.0.1), StataMP 18, and R statistical packages (Version 4.4.1).

resultsIn 2021, global mortality from AD and other dementias among individuals aged 60 and older reached approximately 1,922,970.75 cases (95% CI: 480,348.08 to 5,104,315.95), and the prevalence was 52,560,253.51 cases (95% CI: 41,399,948.84 to 65,633,448.71). High Body Mass Index (BMI) and High Fasting Plasma Glucose (FPG) were prominent risk factors. Projections suggest a near fourfold increase in AD cases by 2050, driven by population growth and aging, with females disproportionately affected. Health inequalities persist, with higher disease burdens in high-SDI regions. The pandemic impacted mortality unevenly, highlighting regional disparities.

conclusionAlthough incidence rates declined from 1990 to 2021, the overall burden of AD and dementias remains substantial and is expected to rise significantly by 2050. The findings underscore the need for targeted interventions addressing risk factors like High FPG, gender disparities, and the socioeconomic effects of COVID-19, particularly in high-SDI countries.

Indexed as

Alzheimer DiseaseCOVID-19DementiaDisability-Adjusted Life YearsGlobal Burden of DiseaseAgedAged, 80 and overFemaleGlobal HealthHumansIncidenceMaleMiddle AgedPrevalenceAlzheimer’s diseaseCOVID-19DementiasGBDHealth inequalityMortality

Identifiers

PMID40389943
PMCPMC12090430

What OpenQuestion holds

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LicenceCC BY-NC-ND
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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.