King's College London

In general, replacement of saturated fat with monounsaturated and polyunsaturated fat reduces the risk of type 2 diabetes, with the evidence stronger for polyunsaturated fat. However, recent research studies have highlighted the importance of the source of dietary fat in prevention of type 2 diabetes. For example, saturated fats found in dairy products are associated with a reduction in risk in large epidemiological studies. Similarly, while polyunsaturated fats in vegetable oils and nuts appear to reduce the risk of type 2 diabetes, polyunsaturated fats in fish do not.