Can miso soup benefit heart health?

Published: October 14, 2025
Updated: October 14, 2025

Through its unique nutritional properties, miso soup has very noteworthy cardiovascular benefits.As a cardiology nutritionist, I recommend it to patients seeking simple support for their hearts and cardiovascular systems. The fermented broth contains substances that actively protect the cardiovascular system. However, the sodium level must be closely controlled.

The iso-flavones in miso can help achieve better cholesterol levels in your blood. These plant compounds can help reduce LDL oxidation in blood vessels. They also promote more favorable lipid characteristics over time. Consumption of miso improves the arterial suppleness. This supports better blood flow throughout your body.

Glutamic acid is a natural regulator of blood pressure, as it promotes the natural production of nitric oxide, which in turn relaxes and dilates blood vessels, improving circulation without the need for medication. Glutamic acid counteracts the effects of sodium in your body when combined with potassium.

Cholesterol Management

  • Isoflavones reduce LDL oxidation
  • Increase HDL cholesterol production
  • Prevent plaque formation in arteries

Blood Pressure Support

  • Glutamic acid boosts nitric oxide
  • Promotes blood vessel dilation
  • Potassium counters sodium effects

Anti-Inflammatory Action

  • Reduces vascular inflammation markers
  • Lowers C-reactive protein levels
  • Protects endothelial cell function
Miso Comparison for Heart Health
TypeWhiteIsoflavones (mg/tbsp)12-15Potassium (mg)40-50Sodium (mg)200-300Recommendation
Best daily choice
TypeYellowIsoflavones (mg/tbsp)18-22Potassium (mg)55-65Sodium (mg)400-500Recommendation
Limit to 3x weekly
TypeRedIsoflavones (mg/tbsp)25-30Potassium (mg)70-80Sodium (mg)600-700Recommendation
Occasional use only
Values based on USDA nutritional data

I recommend white miso for its best cardiovascular benefits, as it is lower in sodium, making it a safe option for daily consumption. Add a tablespoon to your morning vegetable broth. You can also include a potassium-rich food, such as avocado, along with the miso. This way, you will obtain the maximal protective effects.

Properly prepare miso to preserve heart-healthy components. Dissolve the paste in warm (but not boiling) water. Consume the mixture within 15 minutes after preparation. Keep miso stored under a piece of plastic wrap that is continuously pressed. These methods will maintain conversely active nutrients.

Track your blood pressure each week when you start using it regularly. Individuals with hypertension should start with small amounts. You may notice an improvement in circulation and energy levels. Combine this with other heart-healthy habits for comprehensive protection.

Read the full article: Top 10 Miso Soup Benefits Explained

Continue reading