Spirulina (Arthrospira platensis)

Spirulina (Arthrospira platensis) is a helical filamentous cyanobacterium that has been cultivated for centuries in the tropical and subtropical regions of Africa, Central America, and Asia. Although it is commonly referred to as a micro-algae, it actually belongs to the kingdom of photosynthetic bacteria. It is harvested from shallow alkaline waters and then dried into powder or tablets. Its nutritional profile makes it one of the most nutrient-dense foods available: it contains between 55 and 70% complete proteins (including all essential amino acids), antioxidant pigments such as phycocyanin and carotenoids (beta-carotene, zeaxanthin), as well as gamma-linolenic acid (GLA), an omega-6 fatty acid. It also contributes to intakes of iron, B vitamins, and magnesium. Spirulina supplementation is particularly suited to those looking to support their plant-based protein and micronutrient intake, especially within a vegetarian or vegan diet. Its antioxidant content contributes to the protection of cells against oxidative stress.