1. Nutrient Powerhouse
Spirulina is regarded as “one of the most protective, healing nutritional ingredients in the 21st century” due to its nutrient profile and beneficial effects.1–3 It’s been consumed as a food by North Africans and Mexicans because it’s a rich source of nutrients, antioxidants, minerals, and vitamins, including:
• High-quality protein (provides all the essential amino acids)
• Vitamin B12
• β-carotene
• Tocopherols (vitamin E)
• Potassium
• Calcium
• Magnesium
• Iron
• Zinc
• Sodium
• Phenolic acids
• Essential fats including γ-linolenic acid
2. Powerful Antioxidant Properties
Spirulina contains several ingredients that have potent antioxidant activities, notably phycocyanin and β-carotene. A number of studies have shown that spirulina significantly improves antioxidant status and capacity.2,4
Why is this important? Researchers agree that a dynamic, healthy balance between levels of free radicals and antioxidant defenses is important for “optimal health.” Imbalances of free radicals and unhealthy levels of oxidants (relative to antioxidants) are commonly defined as “oxidative stress,” which plays a central role in biological aging and virtually all negative health outcomes.5,6 Thus, fortifying the body’s antioxidant defense system with foods like spirulina is incredibly important for overall health.
Not only is phycocyanin a powerful scavenger of potentially dangerous free radicals, it is also responsible for giving spirulina its blue-green pigment. In fact, a form of phycocyanin is used as a natural dye in food, cosmetics, and pharmaceuticals.3,7
3. Immunity and Detoxification
Not surprisingly (with the info above), Spirulina has been shown to have immune-enhancing effects. In two separate, randomized, controlled trials, a research group from Korea showed that spirulina use resulted in a significant rise in IL-2 (an anti-inflammatory cytokine) and a significant reduction in IL-6 (a pro-inflammatory cytokine).4,8 What’s more, researchers from Denmark showed that consuming spirulina for just one week enhanced the activity of Natural Killer cells, which play a crucial role in the body’s natural defense mechanisms.9
Protect Your Immune System
Did you know that eating a diet high in fruits and vegetables helps to protect your immune system from illness and enviornmental factors?
Spirulina has also been shown to increase the concentration of the body’s “master antioxidant” glutathione, bolstering the immune system and the body’s natural defenses against stress and dangerous toxins.10 Glutathione is most highly concentrated in the liver, which plays a vital role in detoxification.11 Speaking of the liver, the health benefits of spirulina have been shown to exert a “protective” effect on the liver.12
4. Heart Health
Several studies have shown that spirulina may have major cardiovascular benefits. In a systemic review with meta-analysis published in the journal Clinical Nutrition, researchers from Romania analyzed the outcomes of seven different randomized, controlled trials. They found spirulina significantly reduced total cholesterol, LDL (“bad”) cholesterol, and triglycerides while elevating HDL (“good”) cholesterol.3
What’s more, research has also shown spirulina may support normal blood pressure levels in healthy men and women.13 Together, these positive effects on blood fats and blood pressure highlight the potent heart health benefits.
5. Insulin Sensitivity, Metabolic Function, and Quality of Life
Spirulina has been shown to have multiple, strong beneficial metabolic effects. For instance, it’s been shown to improve carbohydrate management and glycemic (the effect of a food on blood sugar) control.14
One study published in the journal Nutrients found 100% of participants using spirulina for two months experienced improved insulin sensitivity.15 Meanwhile, researchers from Greece found similar insulin sensitivity benefits with 6 months of spirulina use, which also resulted in significant improvements in quality of life.12
6. Energy Levels
One of the most highly touted health benefits of spirulina is its effects on energy levels. Indeed, in a randomized, double-blind, placebo-controlled study, researchers from Ohio State University provided confirmation of this key attribute. After 8 weeks, participants taking spirulina demonstrated significant reductions in feelings of mental and physical fatigue.16
7. Exercise Performance and Recovery
Spirulina may also enhance athletic performance. In a study published in Medicine & Science in Sports & Exercise, the flagship journal of the American College of Sports Medicine, Greek researchers found spirulina significantly increased exercise performance (time to exhaustion).10
In a study published in the European Journal of Applied Physiology, researchers from Taiwan found that spirulina reduced muscle damage following intense exercise. What’s more, participants demonstrated improved time to exhaustion on a graded exercise test, suggesting improved performance and aerobic fitness.17
8. Fat Burning and Body Comp
Spirulina may also improve body composition: it’s been shown to significantly increase fat burning during exercise.10 Even more, spirulina supplementation for 6 months has been shown to reduce body weight by 8%.12
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