Spirulina is incredibly good for you. It is loaded with nutrients that can have powerful effects on your body and brain. Here are 10 evidence-based health benefits of spirulina. 1. Spirulina is Extremely High in Many Nutrients Spirulina is an organism that grows in both fresh and salt water. It is a type of bacteria called cyanobacterium, which is often referred to as blue-green algae. Just like plants, cyanobacteria can produce energy out of sunlight, via the process called