Spirulina Nutrition Facts, Benefits, and Uses: A Superfood for Your Diet Spirulina is a nutrient-dense superfood with a range of health benefits, including immune system support, improved muscle strength, better digestive health, and detoxification. Its impressive profile of proteins, vitamins, minerals, and antioxidants makes it an invaluable addition to any diet. However, as with any supplement, it’s essential to consult a healthcare provider if you have any health concerns before adding spirulina to your routine.