Does spirulina benefit cardiovascular health?

Published: October 12, 2025
Updated: October 12, 2025

Spirulina has many ways to protect the cardiovascular system. Its phycocyanin antioxidant reduces inflammation in the arteries, while its amino acids stimulate synthesis of the vasodilator nitric oxide. I recommend it to patients with borderline hypertension, who will see measurable benefits by using it consistently for six weeks.

Cholesterol Optimization

  • Lowers LDL cholesterol 10-15% by inhibiting absorption
  • Increases HDL cholesterol for better lipid balance
  • Reduces oxidized LDL particles that form arterial plaque

Blood Pressure Regulation

  • Enhances nitric oxide production for vasodilation
  • Reduces systolic pressure 5-7 mmHg consistently
  • Improves endothelial function within arterial walls

Anti-Inflammatory Effects

  • Decreases C-reactive protein by 30-40%
  • Reduces arterial inflammation markers
  • Prevents white blood cell adhesion to vessel walls
Cardiovascular Impact Comparison
SupplementSpirulinaLDL Reduction
10-15%
HDL Increase
5-8%
BP Reduction
5-7 mmHg
SupplementFish OilLDL Reduction
4-8%
HDL Increase
1-3%
BP Reduction
2-4 mmHg
SupplementGarlic ExtractLDL Reduction
6-10%
HDL Increase
No change
BP Reduction
4-6 mmHg
Journal of Cardiology clinical comparisons

The nitric oxide boost relaxes blood vessels, improving circulation. This effect starts within three weeks, lowering hypertension risks. Pair spirulina with beetroot for enhanced benefits. My clients taking daily blood pressure readings gain optimal readings at 5g daily.

Consistent daily consumption preserves cardiovascular protection. Discontinue use and consult your cardiologist if you are taking blood thinners. Use with aerobic exercise for greater benefits. Continuously monitor your progress every three months with lipid panels.

Read the full article: 10 Powerful Benefits of Spirulina Powder

Continue reading