Astaxanthin, a red pigment that originates in marine algae, is one of nature’s most potent antioxidants. It has numerous other useful properties as well: it is an efficient blocker of ultraviolet radiation, it reduces the impact of glycation, and it decreases inflammatory responses. Studies are revealing astaxanthin’s remarkable ability to fight the prime causes of aging, not only in the skin, where it was first studied, but in organs and tissues throughout the body. Astaxanthin boosts energy, improves endurance, and helps muscles to recover after extreme exertion. Astaxanthin protects and promotes healthy immune functioning, reduces cancer risks, mitigates the impact of diabesity, protects heart muscle and blood vessels, slows brain aging, and supports eye health. These multiple benefits of astaxanthin, coupled with its proven safety record, make it a vital component of a responsible program of nutritional supplementation.