Blue-green algae are actually not algae, but various types of Cyanobacteria. Aphanizomenon flos-aquae, Spirulina maxima, Spirulina platensis, or a combination of the three are the typical ingredients in blue-green algae products. The U.S. National Institutes of Health includes spirulina and non-spirulina species under the common name spirulina. Blue-green algae are available as a fresh dried product and in tablets, flakes and other forms. It's important to buy blue-green algae products from a reputable manufacturer, cautions the University of Maryland Medical Center, because otherwise the substance may be contaminated with heavy metals or other toxins. The NIH notes that more research is needed to confirm any potential health benefits of blue-green algae.
Nutrition Benefits
Blue-green algae contains a large number of vitamins and minerals, including calcium, copper, iron, manganese, selenium, zinc, B-complex vitamins, and vitamin E. Spirulina contains more beta-carotene than carrots do, according to the NIH. It is also high in protein and contains gamma-linolenic acid, a type of omega-6 fatty acid that reduces inflammation.
Immune System Improvement
Improving immunity may be another health benefit of blue-green algae. Laboratory and animal research indicates that spirulina increases production of antibodies, cytokines and other substances that help prevent and fight infections and chronic illnesses, including cancer, according to the UMMC.
Allergy Symptom Relief
Blue-green algae has anti-inflammatory properties that may improve symptoms of nasal allergies, according to the NIH. Spirulina also may
prevent the release of histamine, a substance involved in allergic reactions that causes symptoms such as runny nose, watery eyes,and hives.
Blood Chemistry Benefits
Blue-green algae may have beneficial effects on keeping blood levels of sugar and fats at a healthy level. Preliminary research with type 2 diabetes patients indicates that spirulina decreases fasting blood sugar levels after two months, according to the NIH. Additionally, the NIH notes that research with both humans and animals has found that spirulina reduces cholesterol and triglyceride levels.
Friendly Bacteria Growth
Laboratory research shows that spirulina enhances the growth of friendly bacteria, including Lactobacillus and other probiotics, according to the UMMC. These types of bacteria help the body digest food, and they prevent intestinal infection that leads to diarrhea. Spirulina supplements could be beneficial when people take antibiotics that kill not only harmful bacteria but the good micro-organisms as well.
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