{Reference Type}: Journal Article {Title}: Multimorbidity, Function, and Cognition in Aging. {Author}: Kadambi S;Abdallah M;Loh KP; {Journal}: Clin Geriatr Med {Volume}: 36 {Issue}: 4 {Year}: 11 2020 {Factor}: 3.529 {DOI}: 10.1016/j.cger.2020.06.002 {Abstract}: Multimorbidity is a global health challenge. Here, we define multimorbidity, describe ways multimorbidity is measured, discuss the prevalence of multimorbidity and how it differs across different populations, examine mechanisms of disease and disability, and discuss the effects of multimorbidity on outcomes such as survival and function.