Spirulina has been used for thousands of years for its nutritional value and for varied medicinal purposes. It is rich in many important nutrients, such as protein, complex carbohydrates, iron, and vitamins A, B, and K, as well as carotenoids, which some proponents of alternative medicine believe may add to spirulina's value as a supplement for preserving good health and preventing disease. However, scientific information is insufficient to support its efficacy for any health condition. Consult with your doctor before using spirulina medicinally.
Cancer
Spirulina is the richest food source of beta-carotene and contains 10 different carotenoids, which may work together to provide antioxidant effects and anti-cancer protection. Some proponents of alternative medicine believe that because spirulina contains important nutrients like iron, manganese, zinc, copper, selenium and chromium, it may possibly fight free radicals and potentially help protect against the cell-damaging effects of factors such as stress, inadequate diet and pollution. These effects have not been proven in human studies.
Cardiovascular Disease
Spirulina may be a good substitute for fatty and high cholesterol foods, says HerbWisdom.com. In addition, some alternative practitioners believe it may help to lower low-density lipoprotein, or bad cholesterol, which may prevent or delay the development of cardiovascular disease such as atherosclerosis and stroke. Spirulina may also potentially help to decrease blood pressure in hypertensive individuals.
Digestive Disorders
Some proponents of alternative medicine believe spirulina may help to enhance digestive and gastrointestinal activity, decrease unhealthy bacteria such as e-coli in the intestines, and enhance good intestinal bacteria, including lactobacillus. Good bacteria help to increase the absorption of nutrients from the gastrointestinal tract and to prevent infection, says HerbWisdom.com. Spirulina may also potentially help maintain proper digestion, relieve constipation and cleanse the intestines from toxins, but these effects have not been confirmed in human studies.
Considerations
According to Wellness.com, spirulina is generally well tolerated but may cause some side effects; the more commonly occurring side effects include headache, muscular pain, facial flushing, increased perspiration and problems with concentration. Allergic skin reactions may also occur, and spirulina should be avoided during pregnancy and lactation, according to Wellness.com. One case of liver damage from spirulina has been reported, cautions Drugs.com.
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