However, there are no known specific compounds that inhibit the onset and metastasis of cancer caused by stress.Astaxanthin is one of secondary carotenoids, and is present in animals such as crustaceans including krill, shrimp and crabs, the muscle and eggs of salmon and trout, and the body surfaces of sea bream, carp and goldfish.At present, although astaxanthin is used as a color restorer for cu