Running on ROS: redefining metabolic adaptation and healthy aging

Nuclear factor erythroid 2-related factor 2 (NRF2) is a master regulator of antioxidant signaling. Xirouchaki et al. show that NRF2 activation in skeletal muscle regulates metabolic homeostasis and healthy aging. Complementary evolutionary adaptations enhancing NRF2 signaling in horses underscore its role in muscle function and metabolism.