Carnitine palmitoyltransferase I (CPT‐1), extensor digitorum longus (EDL), high‐fed diet (HFD), peroxisome proliferator–activated receptor gamma coactivator‐1 alpha (PGC‐1α), not reported (NR), spontaneously diabetic torii (SDT), type 2 diabetes mellitus (T2DM), normal control diet (NCD), high‐fed high sucrose (HFHS), uncoupling protein 1 (UCP1), uncoupling protein 2 (UPC2), uncoupling protein 3 (UPC3). Here, UCP2 is linked to type 2 diabetes mellitus.