Spirulina, the dried form of freshwater, blue-green algae, is sometimes referred to as a "superfood" because of the nutrients it provides. It has been touted as a cure for ailments such as diabetes, depression, heart disease and obesity, but there is insufficient evidence to support these claims, according to the National Institutes of Health. Do not take any supplements without first consulting your physician.
Protein
Dr. Eric Gershwin, in his book, "Spirulina in Human Nutrition and Health," writes that spirulina contains protein-forming amino acids. Spirulina, sometimes used in nutritional supplements, is available in powdered form. Protein, utilized by every organ and tissue in your body, powers cellular processes and is necessary for building red blood cells and repairing muscles.
Essential Fatty Acids
Spirulina contains gamma-linolenic acid, an omega-6 essential fatty acid. Your body needs omega-6 to perform crucial functions but cannot produce it. Essential fatty acids play a role in healthy skin, hair and metabolism and may protect you from some chronic diseases, such as hypertension, and high blood pressure. Fish is an excellent source of omega-3 fatty acids, but spirulina is a suitable vegetarian alternative.
Vitamins
Spirulina is a source of vitamin E, B-complex vitamins and beta-carotene. B-complex vitamins are essential for many body functions, including growth and metabolism. Beta-carotene provides your body with vitamin A, a key ingredient in eye and bone development. Vitamin E helps to protect your cells from aging and improves your immune system.
Minerals
Spirulina contains the minerals iron, zinc, copper and selenium. Zinc is an essential mineral that boosts your immune system. Copper plays a key role in the production of red blood cells and the formation of connective tissue. Selenium helps with thyroid and heart functions.
Antioxidants
Antioxidants protect cells from damaging atoms called free radicals. Spirulina contains chlorophyll, a type of phytonutrient, which also offers antioxidant properties.
Warning
Because spirulina is a type of algae, it can absorb chemicals or toxins in the water. Commercially grown spirulina may be safer. There are no known drug interactions with spirulina, according to the University of Maryland Medical Center, but there are possible interactions between spirulina and immune-suppressing drugs such as methotrexate, prednisone, cyclosporine, adalimumab, mycophenolate, leflunomide, infliximab, etanercept and azathioprine.
References
- MedLine Plus: Blue-Green Algae
- "Spirulina in Human Nutrition and Health"; M. Eric Gershwin, M.D.; October 2007
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