Can Probiotics Lower Blood Pressure?

by Lisa Nelson, RD, LN Health Professional

Probiotics are linked to health benefits, such as improved digestion, reduced depression, a stronger immune system, and prevention of urinary tract infections. Researchers are now exploring a possible connection between probiotics and cardiovascular diseases, such as high blood pressure.

What are probiotics?

Probiotics are live bacteria and microorganisms that promote proper bodily function, especially within the digestive tract.

The body is full of “good” and “bad” bacteria. Probiotics are often referred to as “good.”

Probiotics are naturally found in the intestines to assist with food digestion, elimination of disease-causing microorganisms, and vitamin production.

Probiotics to lower blood pressure

How the body maintains a stable blood pressure is complex, with numerous biological pathways. One involves angiotensin converting enzymes (ACE) responsible for vasoconstriction of blood vessels. ACE inhibitors are blood pressure medications that inhibit the function of ACE. Probiotics have been shown to have similar ACE-inhibitory activity via the production of antihypertensive peptides. Peptides are a combination of amino acids. Amino acids are the building blocks for protein.

Researchers reviewed human studies on the effect of probiotics on blood pressure. Evaluation of nine trials found probiotic consumption to lower systolic blood pressure by 3.56 mmHg and diastolic blood pressure by 2.39 mmHg.

Greater blood pressure reduction was seen when multiple- versus single-species probiotics were consumed, and if baseline blood pressure was more than 130/85 mmHg versus less than 130/85 mmHg. Greater reduction was also seen in individuals who consumed the probiotic for a duration greater than eight weeks.

This research analysis suggests probiotic consumption may modestly improve blood pressure levels.

Therefore, consuming foods rich in probiotics will likely promote lower blood pressure levels and increase the effectiveness of blood pressure medications.

Dietary sources rich in probiotics

While probiotics are naturally found in the body, you can also obtain probiotics from foods and supplements.

Here are five dietary sources rich in probiotics:

1. Yogurt. Select yogurt that contains active or live cultures. The “Live & Active Culture” seal program was established by the National Yogurt Association. In order for products to carry the seal, refrigerated products must contain at least 100 million cultures per gram when manufactured and frozen products 10 million cultures per gram.

2. Kefir. A fermented milk drink that contains several strains of healthy bacteria and yeast.

3. Sauerkraut. Shredded cabbage fermented by lactic acid bacteria.

4. Kimchi. This is a spicy Korean side dish often containing fermented cabbage as the main ingredient.

5. Traditional buttermilk. The liquid left over from butter production contains probiotics. Be aware that cultured buttermilk, which is more easily found in grocery stores, does not contain as many probiotics.

There are additional dietary steps you can take to lower blood pressure levels. Access the free e-course 7 Natural Ways to Lower Blood Pressure at

Lisa Nelson, RD, LN
Meet Our Writer
Lisa Nelson, RD, LN

Lisa Nelson RD, a registered dietitian since 1999, provides step-by-step guidance to lower cholesterol and lower blood pressure, so you can live life and enjoy your family for years to come. Lisa's passion for health comes from her own family history of heart disease, so she doesn't dispense trendy treatments; Lisa practices what she teaches in her own daily life. Because her own health is the foundation of her expertise, you can trust that Lisa will make it truly possible for you to see dramatic changes in your health, without unrealistic fads or impossibly difficult techniques.