As superfoods continue to grow in popularity, so too has the interest in chlorella. This deep-green alga is the close cousin of spirulina. Although both look similar at first glance, there are quite a few differences that make them distinct from each other. The biggest of these is that chlorella has a unique nutritional profile that makes it incredibly beneficial in its own way. From reducing free radical stress to enhancing the immune system, here’s what chlorella can do for you — according to science.