Korean researchers noted significant health benefits in 78 seniors who took a spirulina supplement. The men and women, aged 60-87 years, were randomized to get either spirulina (8 grams per day) or a placebo for 16 weeks. In men, spirulina intake was associated with a significant decrease in plasma cholesterol and a significant increase in plasma interleukin-2 (an immune system responder). In women, researchers also noted significant increases in IL-2levels and superoxide dismutase (SOD) activity, and a significant decrease intotal cholesterol. "The results demonstrate that spirulina has favourable effects on lipid profiles, immune variables, and antioxidant capacity in healthy, elderly male and female subjects," say the authors.
Source: Ann NutrMetab, 2008; 52(4): 322-328