1. Heart Health
Spirulina supplements can help lower levels of total cholesterol, low-density lipoprotein (LDL) cholesterol and triglycerides significantly, according to a 2018 study in the journal Diabetes, Metabolic Syndrome and Obesity: Targets and Therapy. In this study, participants consumed 1 to 19 grams of spirulina a day for two to 48 weeks before researchers concluded that spirulina has a “favorable effect” on these cardiac measures.
Another study notes blue-green algaes like spirulina can be effective natural options for improving blood lipid profiles, preventing inflammation and oxidative stress, and protecting against cardiovascular disease. Experts attribute spirulina’s cardiovascular benefits to its antioxidant and anti-inflammatory properties.
2. Gut Health
Though limited, research on spirulina’s impact on gut health is promising. A 2017 study on older mice showed it helped preserve gut function during aging, and it may help preserve a “healthy gastrointestinal microbial community” as well.
“Spirulina has prebiotic properties and the good bacteria in your gut feed on that,” says Gans. However, while studies show promising results, Gans adds that more research is needed.