Probiotics, Prebiotics, and Postbiotics: What You Really Need to Know

By: Salus Integrative Medicine – Dr. Lisa Mainier, Erie, PA

Gut health is more than just digestion—it’s the foundation of immune balance, hormone regulation, metabolism, and even mood. At Salus Integrative Medicine in Erie, PA, Dr. Lisa Mainier emphasizes the importance of understanding probiotics, prebiotics, and postbiotics, and how to choose supplements and lifestyle practices that truly support your microbiome.

What Are Probiotics, Prebiotics, and Postbiotics?

Each plays a different role in gut health, and understanding their unique functions is key to supporting your overall well-being:

Probiotics are live beneficial bacteria that help maintain a healthy microbial balance in the gut.
Example: Lactobacillus and Bifidobacterium strains found in quality supplements and fermented foods.
Prebiotics are non-digestible fibers that serve as food for probiotics.
Example: Inulin, resistant starch, and fiber-rich foods like garlic, onions, bananas, and oats.
Postbiotics are the bioactive compounds produced by probiotics during fermentation in the gut.
Example: Short-chain fatty acids (SCFAs) like butyrate, which support the gut lining and immune function.

Why Your Microbiome Needs All Three

A thriving gut microbiome isn’t built from probiotics alone. You need the right environment and fuel for beneficial bacteria to grow—and the health-promoting compounds they produce. Here’s how they work together:

Prebiotics feed probiotics, allowing them to multiply and function.
Probiotics metabolize prebiotics, producing beneficial postbiotics.
Postbiotics support immunity, reduce inflammation, and strengthen the gut barrier.

Choosing the Right Supplements (and When You Need Them)

Dr. Lisa Mainier helps patients personalize their microbiome care based on symptoms, medical history, and diagnostic testing. Not everyone needs the same supplements. Some tips:

Choose probiotics with multiple strains and a minimum of 10 billion CFUs.
Look for prebiotics if your fiber intake is low but increase gradually to avoid bloating.
Postbiotics are newer in supplement form, but some are available as targeted products for inflammation or gut repair.

Lifestyle Choices That Support the Gut

Supplements can help, but daily habits matter most. To naturally support your gut microbiome:

Eat a fiber-rich, plant-forward diet with fermented foods (like kimchi, yogurt, and sauerkraut).
Limit processed foods and added sugars, which feed harmful bacteria.
Manage stress through breathwork, meditation, and movement—stress weakens the gut barrier.
Prioritize sleep and circadian rhythm, which help regulate the microbiome.

When to Seek Gut-Specific Care

If you’re dealing with bloating, constipation, brain fog, autoimmune symptoms, or metabolic changes, your gut may be the root cause. Dr. Mainier offers gut microbiome analysis and personalized care plans to help patients optimize gut function as part of whole-body wellness.

Take the Next Step

If you’re unsure what your gut needs—or you’re tired of guessing—Salus Integrative Medicine can help you understand your microbiome and take the next steps in restoring balance.

Schedule a consultation with Dr. Lisa Mainier in Erie, PA: https://drlisamainier.com/contact-me/