Objective Diabetic cardiomyopathy (DCM) lacks targeted therapies. This study investigated naringenin (NAR), a citrus flavonoid, in a streptozotocin (STZ)‐induced diabetic rat model with cardiac complications, focusing on SIRT1‐mediated mechanisms. Methods Rats (n = 8/group) included control, NAR, DCM, DCM + NAR, and DC...