“Superfood” is a marketing term rather than a scientific category. Foods differ in their nutrient profiles, and no single ingredient can provide every benefit associated with a healthy dietary pattern.
Spirulina is nutrient-rich and can add protein, iron and naturally occurring pigments to meals and drinks. Its value is best understood as one part of a varied diet.
Research findings about specific extracts, doses or study populations should not be treated as guaranteed outcomes from an everyday serving of fresh spirulina.