Diabetes in cats is very similar to diabetes in people. Diet plays a large role in managing the disease and most patients end up on insulin injections at some point. You may shudder at the thought of having to give your cat daily injections but I assure you, even the most squeamish owner can learn to use the incredibly small syringes or insulin pen after seeing their cat barely even notice the injection. It is a complex disease which requires a lot of monitoring but affected cats can live happily for years with the illness and some may even go into remission if treatment is started early.