Diabetology is the clinical science of diabetes mellitus, its diagnosis, treatment, and follow-up. It is considered a specialized field of endocrinology.  Concerning disorders of the carbohydrate metabolism, the field includes diagnosis and treatment of insulin resistance, prediabetes, diabetes and gestational diabetes. Not be confused with a dietican or nutritionist, diabetologists are experts in human nutrition and the regulation of diet while a dietitian alters  patient nutrition based upon medical conditions and individual needs.