Other studies in animals seem to support the idea that spirulina can help the body fight disease.

BBC: Algae may boost immune system

While analysis of spirulina has shown that it does not contain a harmful toxin called microcystin, other blue-green algae has found to be frequently contaminated.

BBC: Algae may boost immune system

In May 2000, the Oregon Department of Health surveyed 87 samples of non-spirulina blue green algae, finding that 63 had microcystin levels above the regulatory limit.

BBC: Algae may boost immune system

Palm Greens went so far as to create a smoothie called the "Bradley's Ultra Green" which includes spinach, kale, mint, ginger, probiotic, bananas, aloe vera, apple juice and Spirulina.

WSJ: Manny Pacquiao vs. the Vegan Timothy Bradley

In January 2000 the FDA slapped him with a warning letter for overhyping the vitamin B-12 content in Spirulina Spirals and wrongly promoting Fruity Booty as a "mostly fruit" product when the only fruit to be found in it was a powdered dust of flavorings.

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