The present invention inter alia provides a method, and use thereof, of predicting CV complications such as AMI, ACS, stroke, and CV death by determining the concentrations of at least one ceramide of Group A and at least one ceramide of Group B in a biological sample and comparing those concentrations to a control. Finding a decreased concentration of at least one Group A ceramide and an increased concentration of at least one Group B ceramide indicates that the subject has an increased risk of developing one or more CV complications. Also provided are a newly identified subset of ceramide molecules, labelled versions thereof, and kits and compositions comprising the same for use in predicting and/or diagnosing CV complications.