Spirulina is a type of blue-green algae, usually available as a powder, that many people consider a superfood. It has high protein and vitamin content, and research suggests it has antioxidant and inflammation-fighting properties, as well as the ability to help regulate the immune system.
Taking spirulina may also help boost a person’s metabolism.
A higher metabolic rate may make a person feel as if they have more energy. It may also increase the number of calories they burn each day, which can aid weight loss.
In a small-scale study published in 2014, participants who took 6g of spirulina a day experienced beneficial metabolic effects, as well as weight loss and better health-related quality of life.
The participants had non-alcoholic fatty liver disease, so more research is required to see if spilling can boost metabolism in people without this condition.
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Studies have also demonstrated spirulina’s ability to manage diabetes, lower cholesterol, reduce blood pressure and prevent heart disease.
A review study published in 2018 found spirulina supplementation significantly lowered people’s fasting blood glucose levels.
High fasting blood sugar is a common problem in people with diabetes (type 1 and type 2), so this suggests spirulina supplements may help control diabetes.
A systematic review and meta-analysis published in 2016 suggested taking spirulina supplements may have a positive impact on blood lipids – fats in the blood.
A 2014 review noted spirulina is well-tolerated by most people and doesn’t cause any significant side effects.
Studies have found between 1-8g of spirulina a day could be effective.
But before taking a new dietary supplement it’s always good to check any dry interactions with your doctor.
You shouldn’t take spirulina if you’re pregnant, have an auto-immune disease or are taking blood-thinning medication.