Blue-green algae supplements were introduced into the U.S. in 1979, with claims that they could aid weight loss and increase energy. Algae is sold as a nutritional supplement.

Spirulina

Spirulina is a unicellular blue-green alga that has been consumed by man since ancient times in Mexico and Africa. It is currently grown in many countries by synthetic methods. Initially Spirulina was eaten for its nutritive value. It is a rich natural source of proteins, carotenoids, and other micronutrients.

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