Abstract: Provided herein are amylin-calcitonin peptide conjugates having enhanced duration of biological activity, and methods of use thereof. The amylin-calcitonin peptide conjugates include duration enhancing moieties, such as water soluble polymers and long chain aliphatic groups, bound to the amylin-calcitonin peptide. Methods of use are provided for treatment of an eating disorder, insulin resistance, obesity, overweight, abnormal postprandial hyperglycemia, Type I diabetes, Type II diabetes, gestational diabetes, metabolic syndrome, dumping syndrome, hypertension, dyslipidemia, cardiovascular disease, hyperlipidemia, sleep apnea, cancer, pulmonary hypertension, cholescystitis or osteoarthritis.