Association Between Metabolic Syndrome and Restrictive Lung Disease in Older Adults in Korea: Analysis of Data from the 7th Korea National Health and Nutrition Examination Survey

PURPOSE: This study was conducted to analyze the association between metabolic syndrome (MetS) and lung disease in older Korean adults.Given the increasing prevalence of MetS and its potential impact on pulmonary function, understanding its relationship with lung disease is crucial for improving preventive and therapeutic strategies.METHODS: Using data from the 7th Korea National Health and Nutrition Examination Survey (2016-2018), the prevalence and association of MetS and lung disease were evaluated in 2,619 individuals aged 65 years or older.Lung function was classified as normal, obstructive lung disease (FEV 1 /FVC < .70),or restrictive lung disease (FVC < 80%