These run together so often that, as a group, they are called the metabolic syndrome. Other contributors include. Fatty foods aren't the only cause of high blood levels of triglycerides. Even when they stand alone, however, they predispose individuals to heart disease. A number of ongoing clinical trials are looking at the impact of these combinations on triglycerides and heart disease. When you eat a cheeseburger, your digestive system rips apart the triglycerides in the meat and cheese into their individual fatty acids. If you are diagnosed with very high triglycerides, a search for causes related to genes, disease, or medication is in order. The body needs some triglycerides in order to function properly. Some doctors turn a blind eye to triglycerides unless they are really, really high.