Spirulina vs Chlorella: Which Green Superfood Is Right for You?
Both are nutrient powerhouses. But they're not the same. Here's an honest, evidence-based breakdown to help you choose.
Both Spirulina and Chlorella are microalgae packed with nutrients — but they're fundamentally different organisms with different nutritional profiles, and the right choice depends on what you're after.
Spirulina wins on protein: 65–70% complete protein by dry weight with a digestibility of 85–95%. Chlorella comes in at 55–60% protein but has a hard cell wall that must be broken to release nutrients.
For detoxification: Chlorella has the edge. Its Chlorella Growth Factor (CGF) and cell wall structure bind heavy metals more effectively. Multiple studies show superior mercury and cadmium removal versus Spirulina.
Our take: if you're choosing one, Spirulina is the better all-rounder for most people — protein, energy, anti-inflammatory action. If you have heavy metal exposure concerns, Chlorella is worth considering alongside.
Note: This article is for informational purposes only. Consult a qualified healthcare practitioner before making changes to your supplementation or diet.