* Phenylketonuria: The spirulina species of blue-green algae contains the chemical phenylalanine. This might make phenylketonuria worse. Avoid Spirulina species blue-green algae products if you have phenylketonuria.
==Health Benefits and uses of Blue-Green Algae are==
Blue-green algae has various purported benefits, including immune system stimulation, lowering cholesterol and antiviral and anticancer effects. It is also purported to manage obesity. * Blue-green algae contains antioxidants, including [[zeaxanthin]], which may help to strengthen the retina of the eye and possibly prevent macular degeneration, a condition that can seriously impair or destroy vision.* Blue-green algae have a high protein, iron, and other mineral content which is absorbed when taken orally. Blue-green algae are being researched for their potential effects on the immune system, swelling (inflammation), and viral infections.
* Treating precancerous mouth lesions.
* Weight loss.
== References ==
[[Category:Treatments]]
[[Category:herbal medicine]]