Carotenoids are pigments, red, orange or yellowish naturally present in roots, leaves, seeds, fruits and flowers, which can also be found, albeit in lesser quantities, in foods of animal origin, such as eggs, meat and fish. The most important carotenoids for the body and most abundant in the diet are lycopene, beta-carotene, lutein and zeaxanthin, astaxanthin that need to be ingested, because the organism is not capable of producing them.