Triglycerides are the main component of body fat; they also circulate in blood. Your body makes triglycerides or gets them from the foods you eat. High triglycerides Your body needs some triglycerides. However, having high levels of triglycerides in your blood is linked to a higher risk of heart disease and stroke. Until recently, triglycerides tended to get less attention when looking at cardiovascular risk compared with LDL and HDL cholesterol levels , unless levels were extremely high. There'