It is a cyanobacteria (blue-green algae) that can be consumed by humans and animals. Cultivated worldwide and used as a dietary supplement.
In fact, Spirulina has been around for centuries, it was a food source for the Aztecs and other Mesoamericans until the 16th century; the harvest from Lake Texcoco in Mexico and subsequent sale as cakes were described by one of Cortes, soldiers. The Aztecs called it tecuitlatl.
Nowadays, Spirulina is being investigated to address food security and malnutrition, and as dietary support in long-term space flight or Mars missions. As it was mentioned before Spirulina can provide some essential nutrients, vitamins, and minerals that our bodies needs, here below a list of a few of the nutrients based on USDA.
1 tablespoon (7gr) of dried Spirulina contains:
Water 0.328 gr
Protein 4.02 gr
Energy 20.3 Kcal
Calcium, Ca 8.4 mg
Iron, FE 2 mg
Magnesium, Mg 13.6 mg
Zinc, Zn 0.14mg
If you want to know more about the benefits of Spirulina, here is an Article from www.healthline.com about it. Learn More