Chlorella has been used for treating cancer as it seems to assist in bringing oxygen to the cells, and seems to help remove certain toxins. Spirulina is a dietary supplement that can provide iron to young children and expectant mothers in addition to providing much-needed protein. It has also been researched in helping patients who suffer from chronic hepatitis. Liver damage has been repaired with the use of this supplement. It has great anti-viral properties that help protect against influenza, HIV-1 and herpes, as well as other various infections. It helps to support and improve the immune system. In addition to all of these things, Spirulina has also been used to help fight diseases such as cancer.