- Spirulina is a blue-green algae that is highly nutritious, containing nutrients like protein, iron, beta carotene, vitamins, and minerals in high amounts. Research shows it has benefits like reducing risks of cancer, heart disease, and viruses. It is about 60% complete protein and grows rapidly with high yields. Studies indicate spirulina may help conditions like anemia, diabetes, cardiovascular issues, neurodegenerative diseases, and more due to its antioxidants and anti-inflammatory properties. In conclusion, spirulina is a very nutritious supplement that can benefit various aspects of health.