DNA and Cellular Protection. Astaxanthin, the fat-soluble compound that gives salmon its pink color, is a potent antioxidant that is loaded with numerous health benefits. In fact, it's been shown to help optimize joint, immune, brain, cardiovascular, DNA, and mitochondrial health. It also supports healthy blood sugar levels for those already in the normal range. And astaxanthin crosses the blood-eye barrier, supporting vascular health within the eye and protecting the eyes' sensitive cells. Because of all that, it's becoming highly valued as a nutritional supplement.