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. 2026 Aug 19;14:1884058. doi: 10.3389/fpubh.2026.1884058

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Copyright © 2026 Hu, Sun, Mao, Tian and Shang.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Bubble chart displaying reported Alzheimer’s disease prevalence per 100 population versus Human Development Index. Each bubble represents one study, with color indicating one of six World Health Organization regions and size representing sample size on a log10 scale. Most studies cluster at higher Human Development Index values, with substantial variation in reported prevalence across studies and regions. — Bubble plot of reported Alzheimer's disease prevalence by Human Development Index. Each bubble represents one study; bubble size represents sample size on a log10 scale, and bubble color indicates the World Health Organization region. The x-axis shows the Human Development Index, and the y-axis shows reported prevalence per 100 population.