The Scientific Relationship Between Heart Health and the Gut Microbiome

How Restoring Gut Health Supports Heart Health

Heart disease remains the leading cause of death worldwide, and while most people recognize diet, exercise, and lifestyle as key factors in cardiovascular health, there’s one critical player that often gets overlooked: the gut microbiome. (1, 2, 3)

Research over the past two decades has revealed that the trillions of microbes living in your digestive tract do more than just help with digestion – they play a direct role in regulating inflammation, metabolism, and even the health of your heart. (4)

February is Heart Health Month, making this the perfect time to look beyond the usual recommendations and explore an emerging piece of the cardiovascular health puzzle.

Scientists have uncovered a strong link between gut dysbiosis (an imbalance in gut bacteria) and heart disease risk, particularly through its influence on inflammation and the production of harmful compounds like TMAO (trimethylamine N-oxide). (5, 6)

In other words, the state of your microbiome might be shaping your heart health more than you realize.

Here, I’ll break down how the gut-heart connection works, why an imbalanced microbiome can increase your risk for cardiovascular disease, and – most importantly – practical steps you can take to restore gut health and support a healthier heart.

The Scientific Relationship Between Heart Health and the Gut Microbiome

You already know your gut microbiome does more than digest food – it’s a key regulator of inflammation, metabolism, and overall health. But when the gut is out of balance, it can set off a chain reaction that directly impacts your heart.

This imbalance, known as dysbiosis, occurs when harmful bacteria outweigh beneficial ones, leading to chronic inflammation, metabolic dysfunction, and even increased cardiovascular risk.

Scientists are now uncovering the specific ways dysbiosis contributes to heart disease, from disrupting cholesterol metabolism to producing harmful compounds that damage blood vessels. (7)

Here’s how your gut influences heart health:

• TMAO (Trimethylamine-N-oxide): Certain gut bacteria convert nutrients like choline and carnitine (found in red meat and eggs) into TMAO – a compound linked to arterial plaque buildup and a higher risk of heart attacks and strokes. (8)
• Leaky Gut & Inflammation: When the gut lining weakens, inflammatory molecules like lipopolysaccharides (LPS) can leak into the bloodstream, triggering chronic inflammation – a major driver of cardiovascular disease. (9, 10)
• Metabolic Disruptions: An imbalanced microbiome can interfere with cholesterol metabolism, insulin sensitivity, and fat storage, increasing the risk of hypertension, obesity, and type 2 diabetes – all of which put extra strain on the heart. (11, 12)

Gut Microbiome Changes with Age

Your microbiome isn’t set in stone – it evolves with your diet, lifestyle, and even age. Research on over 9,000 adults found that as people age, microbial diversity shifts, and those with the most significant changes tended to be healthier, more mobile, and even lived longer. (13)

One key player? Indole-3-Propionic Acid (IPA) – a gut-derived metabolite found in cruciferous vegetables like broccoli and cabbage.

Higher IPA levels have been linked to: (14)

• Lower inflammation
• Improved mobility and physical resilience
• Protection against atherosclerosis
• Better metabolic health with aging

The good news? Your gut microbiome is adaptable, meaning small changes can have a profound impact on heart health.

How Restoring Gut Health Supports Heart Health

The connection between your gut and heart isn’t just theoretical – it’s a dynamic relationship that you have the power to influence. The good news? Restoring balance in your gut microbiome can actively reduce inflammation, improve metabolic health, and lower your risk for cardiovascular disease.

Research has uncovered that when your gut microbiome is in balance, it acts like a well-oiled machine, producing beneficial compounds that influence everything from digestion to heart health.

Among the most important of these are short-chain fatty acids (SCFAs), including butyrate, propionate, and acetate. These SCFAs help maintain the integrity of the gut lining, preventing harmful substances from leaking into the bloodstream and triggering inflammation. (15)

Butyrate, in particular, reduces systemic inflammation, supports insulin sensitivity, and even helps regulate cholesterol metabolism. (16, 17) Phosphatidylcholine (PC), another key compound influenced by gut bacteria, also plays a role in maintaining healthy cell membranes and supporting cardiovascular function. (18, 19)

When SCFAs and other beneficial metabolites are in optimal supply, they help lower blood pressure, reduce arterial stiffness, and promote overall cardiovascular resilience – clear evidence that a thriving gut microbiome is a powerful ally for your heat.

So, how do you create a heart-healthy gut?

It starts with daily habits that nourish beneficial gut bacteria and limit harmful ones. Here are five science-backed strategies to support both your microbiome and your cardiovascular system:

6 Strategies for Improving The Gut Microbiome to Support Heart Health

1. Dietary Strategies: Focus on Gut-Heart-Friendly Foods

A heart-healthy diet can be incredibly beneficial for your gut and cardiovascular system. Foods rich in fiber, antioxidants, and healthy fats are essential for maintaining gut health while supporting heart health.

For example, incorporating more fiber-rich foods like fruits, vegetables, legumes, and whole grains can promote the growth of beneficial bacteria in the gut and encourage the production of short-chain fatty acids (SCFAs), which help reduce inflammation and regulate cholesterol.

Additionally, healthy fats play a crucial role in gut and heart health by nourishing the gut lining, reducing inflammation, and supporting optimal cellular function. Omega-3 fatty acids, found in fatty fish like salmon and sardines, are well-known for their anti-inflammatory properties, while omega-6 fatty acids are equally essential for maintaining balance within the body. Unlike omega-9 fats – found in avocados and olive oil, which primarily contain oleic acid and are not considered essential – omega-3 and omega-6 fats must be obtained from the diet.

One bioactive health oil that provides the ideal ratio of these essential fats is BodyBio Balance Oil, which combines flaxseed and sunflower oils to deliver the correct balance of omega-6 to omega-3. Maintaining this ratio is critical, as an imbalance – especially one that skews too high in omega-6 from processed foods – can drive inflammation and negatively impact cardiovascular health.

In addition to dietary sources, I often recommend evening primrose oil, a rich source of gamma-linolenic acid (GLA), an omega-6 fatty acid with unique anti-inflammatory benefits. Supporting your body with the right fats can help optimize gut function, regulate cholesterol levels, and promote overall cardiovascular wellness.

Actionable Tip: Focus on plant-based meals, increase fiber intake, and include fatty fish like salmon or sardines two to three times a week.

2. Lifestyle Interventions: Prioritize Stress Management

Chronic stress is not only harmful to your mental health – it also disrupts your gut microbiome and contributes to systemic inflammation, which negatively impacts heart health. Stress can increase the production of cortisol, a hormone that, in excess, can alter gut bacteria, leading to dysbiosis (an imbalance of gut microbes). This imbalance triggers inflammation, impairs digestion, and elevates heart disease risk.

Integrating stress-reducing activities such as yoga, mindfulness meditation, or even a simple walk outdoors can support your gut and cardiovascular health by helping maintain a balanced microbiome and reducing the body’s inflammatory response.

Actionable Tip: Start with 10 minutes of daily mindfulness meditation or deep breathing exercises to lower cortisol levels and improve gut health.

3. Exercise: Move to Improve Gut and Heart Health

Regular physical activity is one of the most powerful ways to improve gut and heart health. Exercise has been shown to increase the diversity of beneficial gut bacteria, enhance digestion, and reduce inflammation. (16)

Beyond its effects on the gut, exercise also improves cardiovascular health by lowering blood pressure, improving circulation, and balancing cholesterol levels.

Whether it’s a brisk walk, strength training, or cycling, moderate-intensity exercise has long-term benefits for both gut microbiota and heart health.

Actionable Tip: Aim for at least 30 minutes of moderate exercise, such as brisk walking, most days of the week.

4. Limit Environmental Toxins

Air pollution, heavy metals, pesticides, and endocrine-disrupting chemicals found in food, water, and personal care products can negatively impact gut and heart health by contributing to chronic inflammation, disrupting microbial balance, and increasing cardiovascular risk. (17)

Reducing exposure to these toxins is essential. When possible, choosing organic, pesticide-free produce, filtering drinking water to remove heavy metals and contaminants, using non-toxic household and personal care products, and limiting plastic use can all help support a healthier gut and heart.

Want to learn more about the hidden toxins that could impact your heart? Join me for an exclusive webinar with Dr. Jack Wolfson, where we’ll uncover the biggest environmental threats to your heart, how to reduce toxin exposure, and strategies for lifelong heart health. Listen here.

5. Supplements: Targeted Support for Heart and Gut Health

While diet and lifestyle form the foundation of gut and heart health, the right supplements can provide additional support. Certain nutrients help balance the gut microbiome, reduce inflammation, and promote cardiovascular function.

Here’s a breakdown of key supplements to consider:

• Probiotics & Prebiotics – Probiotics introduce beneficial bacteria into the gut, while prebiotics (like inulin and resistant starch) feed these microbes, helping them thrive. Strains like Lactobacillus and Bifidobacterium have been linked to lower cholesterol, reduced inflammation, and improved gut integrity.
• Omega-3 Fatty Acids – Found in fish oil and algae-based supplements, omega-3s are well-known for supporting heart health by lowering triglycerides and reducing inflammation. They also help maintain a balanced gut microbiome by promoting the growth of beneficial bacteria.
• Magnesium – Essential for muscle function (including the heart), magnesium also plays a role in digestion by supporting gut motility and reducing inflammation. Many people are deficient, making supplementation beneficial.
• Vitamin D – Low vitamin D levels are linked to both gut dysbiosis and increased cardiovascular risk. Adequate vitamin D supports immune function, helps maintain gut barrier integrity, and plays a role in heart health.
• CoQ10 – This powerful antioxidant is crucial for heart health, improving blood vessel function and protecting against oxidative stress. It also plays a role in maintaining a healthy gut lining.

Combining these targeted supplements with a gut-friendly diet and lifestyle can help you create a strong foundation for both digestive and cardiovascular health.

6. Sleep: Prioritize Quality Rest

Sleep is often underestimated, but its role in both gut health and heart health is essential. Poor sleep has been shown to disrupt the gut microbiome by decreasing the abundance of beneficial bacteria and promoting the growth of harmful ones.

This disruption can increase inflammation, raising the risk of cardiovascular disease. Additionally, inadequate sleep can lead to poor metabolic function, increased blood pressure, and higher cholesterol levels.

Ensuring you get 7–9 hours of quality sleep each night is crucial for both your heart and gut to thrive.

Actionable Tip: Establish a consistent bedtime routine, avoid screen time at least an hour before bed, and aim for 7–9 hours of uninterrupted sleep each night.

A Practical Path to Better Heart Health

Your gut plays a powerful role in shaping your heart health, influencing everything from inflammation to metabolism and cholesterol balance.

The best part? You have the power to shape this connection.

Simple, intentional changes to your diet, lifestyle, and environment can create lasting benefits for your gut and cardiovascular system.

If you’re ready to take control of your heart health, start by learning more. Join Dr. Jack Wolfson and me for an in-depth webinar to uncover the hidden toxins affecting your heart, how to reduce exposure, and functional medicine strategies for lifelong cardiovascular wellness.

Want to take it a step further with a plan tailored to you?

At The Spring Center, we go beyond general recommendations to create a strategy personalized to your unique needs. Whether you want to optimize detoxification, support your metabolism, or enhance overall wellness, my team and I are here to guide you every step of the way.

Enroll now to elevate your health.