Evidence supporting the use of: Spirulina
For the health condition: Anemia

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Synopsis

Source of validity: Scientific
Rating (out of 5): 2

Spirulina, a blue-green algae, has been explored for its potential to support or treat anemia, particularly iron-deficiency anemia. The rationale behind its use lies in spirulina’s relatively high iron content and the presence of phycocyanin, a pigment-protein complex that may have hematopoietic (blood-forming) effects. Several small-scale clinical studies and animal experiments have suggested that spirulina supplementation can improve hemoglobin levels and red blood cell counts in populations at risk for anemia, such as pregnant women, children, and the elderly.

For example, a randomized controlled trial in anemic schoolchildren found that daily spirulina supplementation significantly increased hemoglobin concentrations compared to controls. Other studies in pregnant women and older adults have observed similar effects. The bioavailability of iron from spirulina is considered good, and it is also rich in other nutrients (such as B vitamins and antioxidants) that may support overall erythropoiesis (red blood cell production).

However, the quality and size of these studies are generally limited, with small sample sizes, short durations, and sometimes lack of rigorous controls. There is a need for larger, well-designed clinical trials to more definitively establish efficacy and safety. Overall, while there is some scientific evidence to support the use of spirulina as a nutritional adjunct in anemia, the strength of the evidence is modest (rated 2 out of 5), and spirulina should not replace standard medical therapies for anemia.

More about spirulina
More about Anemia

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