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However, the measurement of numerous exposures at once and over time, as well as modeling their effects on dementia risk, presents significant methodological challenges. Through community engagement and consensus\u2010building processes integrating input from multidisciplinary panels of experts, we identified critical priority topics for methods used in studying links between the exposome and dementia risk, along with advances needed to address those priorities. We identified nine priority topics: high\u2010dimensional and multimodal data, measurement error, harmonization across studies, mixtures of exposures, effect heterogeneity, exposure timing, cumulative exposures, reverse causation, and sample composition. This paper describes these priority topics and highlights areas where future research or the dissemination of existing methods could advance the state of existing science.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Highlights<\/jats:title>\n                    <jats:p>\n                      <jats:list list-type=\"bullet\">\n                        <jats:list-item>\n                          <jats:p>Inherent complexities central to the measurement and modeling of the exposome and its relationship to dementia pose methodological challenges.<\/jats:p>\n                        <\/jats:list-item>\n                        <jats:list-item>\n                          <jats:p>We identified nine priority topics, such as measurement error, mixtures of exposures, and cumulative exposures.<\/jats:p>\n                        <\/jats:list-item>\n                        <jats:list-item>\n                          <jats:p>Modeling approaches should consider complexity but provide useful simplifications when possible.<\/jats:p>\n                        <\/jats:list-item>\n                        <jats:list-item>\n                          <jats:p>Investments in the development and dissemination of innovative approaches and methodological guidance are needed.<\/jats:p>\n                        <\/jats:list-item>\n                      <\/jats:list>\n                    <\/jats:p>\n                  <\/jats:sec>","DOI":"10.1002\/alz.70928","type":"journal-article","created":{"date-parts":[[2025,11,22]],"date-time":"2025-11-22T11:01:22Z","timestamp":1763809282000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":4,"title":["Key research priorities in methodological approaches for measuring the exposome and studying its role in the development of 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