Spirulina Is Extremely High in Many Nutrients Spirulina is an organism that grows in both fresh and salt water. It is a type of cyanobacteria, which is a family of single-celled microbes that are often referred to as blue-green algae. Just like plants, cyanobacteria can produce energy from sunlight via a process called photosynthesis. Spirulina was consumed by the ancient Aztecs but became popular again when NASA proposed that it could be grown in space for use by astronauts. A standard daily dose of spirulina is 1–3 grams, but doses of up to 10 grams per day have been used effectively. This tiny alga is packed with nutrients. A single tablespoon (7 grams) of dried spirulina powder contains: Protein: 4 grams Vitamin B1 (thiamine): 11% of the RDA Vitamin B2 (riboflavin): 15% of the RDA Vitamin B3 (niacin): 4% of the RDA Copper: 21% of the RDA Iron: 11% of the RDA It also contains decent amounts of magnesium, potassium and manganese and small amounts of alm
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