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Astaxanthin (ATX) is a red pigment carotenoid present in shrimp, salmon, crab, and asteroidean. Several studies have corroborated the anti-oxidant efficacy of ATX. In addition, ATX has anti-inflammatory, anti-apoptotic and anti-proliferative properties. In the present review, we discuss the role of Nrf2 in mediating the anti-cancer, anti-aging, neuroprotective, lung-protective, skin-protective, cardioprotective, hepatoprotective, anti-diabetic and muscloprotective effects of ATX.