BMI and all-cause mortality in older adults: A meta-analysis

Abstract

Background: Whether the association between body mass index (BMI) and all-cause mortality for older adults is the same as for younger adults is unclear. Objective: The objective was to determine the association between BMI and all-cause mortality risk in adults ≥65 y of age. Design: A 2-stage random-effects meta-analysis was performed of studies published from 1990 to 2013 that reported the RRs of all-cause mortality for community-based adults aged ≥65 y. Results: Thirty-two studies met the inclusion criteria; these studies included 197,940 individuals with an average follow-up of 12 y. With the use of a BMI (in kg/m2) of 23.0-23.9 as the reference, there was a 12% greater risk of mortality ..