October 09, 2025

Spirulina Lowers Blood Pressure and Supports Heart Health

7 minutes

Spirulina, a blue-green algae once used by ancient cultures as food, has been proven in modern research to significantly lower blood pressure
Consuming at least 3 grams of spirulina daily for eight to 12 weeks reduces both systolic and diastolic pressure, with whole spirulina working better than extracts
People over 50, those who are overweight, and adults already dealing with high blood pressure experience the strongest benefits from regular spirulina use
Spirulina works by improving blood vessel flexibility, boosting nitric oxide production, and protecting arteries from oxidative stress and inflammation
Safe and natural, spirulina is generally well tolerated, but it should be avoided if you’re allergic to seafood or iodine, pregnant, or nursing

...more

By Dr. Mercola

4.6

14801,480 ratings

October 09, 2025

7 minutes

Spirulina, a blue-green algae once used by ancient cultures as food, has been proven in modern research to significantly lower blood pressure
Consuming at least 3 grams of spirulina daily for eight to 12 weeks reduces both systolic and diastolic pressure, with whole spirulina working better than extracts
People over 50, those who are overweight, and adults already dealing with high blood pressure experience the strongest benefits from regular spirulina use
Spirulina works by improving blood vessel flexibility, boosting nitric oxide production, and protecting arteries from oxidative stress and inflammation
Safe and natural, spirulina is generally well tolerated, but it should be avoided if you’re allergic to seafood or iodine, pregnant, or nursing

...more