Spirulina is high in Chlorophyll and blue pigment phycocyanin, a biliprotein .The copious levels of Chlorophyll and Phycocyanin in Spirulina may explain its capacity to thwart cancer colonies from taking place .
Spirulina has the gift to stimulate natural killer cells and similar anti-immune components of the immune system that can help to battle cancer cells. Furthermore, these spirulina-stimulated killer cells can battle disease other than cancer, ranging from the common cold to HIV.