Word of Caution: There are a few risk factors in excessive consumption of raisins. Raisins are quite high in calories, which can increase weight quickly if you are not careful. Raisins also have high levels of triglycerides due to their high content of fructose (triglycerides are byproducts of the body metabolizing fructose). High levels of triglycerides can increase your chances of developing diabetes, coronary heart disease, and fatty liver cancer. If you have other risk factors, then be careful and don’t add too many raisins to your diet.