The association between body mass index and all-cause mortality
A meta-analysis
Keywords:
all-cause mortality, body mass index, cohort, meta-analysisAbstract
Associations between body mass index (BMI) and mortality can help to estimate the public health impact, including mortality by all-cause. However, the association between BMI and all-cause mortality is still unclear. This study aimed to review the association between body mass index with all-cause mortality. Articles that reported hazard ratio (HR) for all-cause mortality using standard BMI categories of general populations of adults were selected from the following databases including PubMed, ProQuest, Springer link, Science direct, and Google scholar for English language articles published from 2000 until 2021. Twelve studies were included in this study. Random-effects summary all-cause mortality HRs were 1.83 (95% CI, 1.60-2.10) for underweight, 0.81 (95% CI 0.74-0.88) for overweight, and 1.09 (95% CI, 0.89-1.34) for obesity. Being overweight may decrease the risk for all-cause mortality while being underweight suggests increased risk. There is no association between obesity and the risk of all-cause mortality.
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