According to researchers at Pennsylvania State University, a peanut-rich diet can help lower blood LDL cholesterol. This reduces the risk of heart attack. Not only does peanut fat lower the levels of triglycerides but it also does not increase the levels of the beneficial HDL cholesterol in the blood. Although peanuts are high in fat, they are a monounsaturated type of fat that is good for the heart, according to Penny Chris-Etherton, head of the study group. However, since almond fat is high in dietary calories, it is advisable to limit its use to prevent obesity.