Park B, et al. - Researchers examined the link between metabolic syndrome (MetS) and QTc interval in 2,157 apparently healthy Korean adults (1,317 men and 840 women) in a health exam program, excluding participants with a history of ischemic heart disease, stroke, cardiac arrhythmia, cancer, thyroid, respiratory, renal, hepatobiliary, or rheumatologic disease. They used Bazett’s formula to calculate the QTc interval. Following sex stratification, multivariate adjusted mean QTc values by the number of MetS components were calculated and compared using analysis of covariance test. In this study population, the arrhythmogenic potential of MetS was corroborated. Therefore, assessment of possible arrhythmic risk in individuals with MetS via careful ECG monitoring is needed.