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Understanding Your Immune System

An evidence based overview of how your immune system works and why supporting immune health requires a root cause, whole person approach.

About This Resource

Your immune system is a complex network that protects your body from infections and disease. This resource draws from NIH research to explain immune function in a clear, accessible way.

Why We Share It

At Nepute Wellness, we approach immune health as part of a comprehensive, root cause wellness strategy. Understanding how your immune system works is the first step toward supporting it effectively.

Your Immune System: More Than Defense

Most people think of the immune system only when they get sick. But research has shown that immune function is deeply connected to overall health, influencing inflammation, healing, energy, and even mood. At Nepute Wellness, supporting immune health is not just about avoiding illness; it is about building a resilient foundation for total wellness.

How the Immune System Works

The immune system consists of two main branches: innate immunity (the rapid, general defense you are born with) and adaptive immunity (the targeted response that develops over time). Together, these systems work to identify, target, and neutralize threats while minimizing damage to healthy tissue.

Key components include white blood cells, antibodies, the lymphatic system, the spleen, bone marrow, and the thymus. The gut also plays a critical role: research published in Clinical and Experimental Immunology suggests that approximately 70% of immune cells reside in the gastrointestinal tract, reinforcing the gut-immune connection.

Root Causes of Immune Challenges

When immune function is compromised, the root causes often extend beyond simple exposure to pathogens. Research suggests several common factors that may influence immune health: chronic stress (which may suppress immune function), poor sleep (which is critical for immune cell production), nutritional deficiencies (especially vitamins D, C, and zinc), gut microbiome imbalance, environmental toxin exposure, and chronic inflammation.

This is why a root cause approach matters. Simply boosting the immune system without addressing underlying factors like stress, gut health, or toxin burden may not produce lasting results.

The Nepute Wellness Approach

Our approach to immune health begins with comprehensive assessment: “Test, Don’t Guess.” We look at blood panels, gut health markers, stress indicators, and nutritional status to understand what may be affecting your immune function at the root level. From there, we develop personalized strategies that address the underlying causes rather than just the symptoms.

Source: National Institute of Allergy and Infectious Diseases (NIAID), NIH. Public domain material used with attribution.

Selfcare as Healthcare: supporting your immune system starts with understanding what it actually needs.

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Knowledge Is Power

Wisdom Is Applying It To Your Life.

Approximately 70% of immune cells reside in the gastrointestinal tract, reinforcing the critical connection between gut health and immune function.
Vighi G et al. Clinical and Experimental Immunology, 2008
Simply boosting the immune system without addressing underlying factors like stress, gut health, or toxin burden may not produce lasting results.
Nepute Wellness

Learn More About Understanding Your Immune System

Understanding Your Immune System

Understanding Your Immune System

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FAQ

Frequently Asked Questions

In-person examination deposits ($50) are non-refundable but may be applied toward rescheduling. Virtual consultation fees are non-refundable once the appointment has taken place. If you need to cancel or reschedule, please contact us at least 24 hours in advance.

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Yes. Nepute Wellness sees patients of various ages, and our approach to identifying root causes through advanced testing can benefit younger patients as well. Each child’s care plan is tailored to their specific needs, age, and developmental stage.

Our philosophy that the body is “blocked, not broken” applies across all ages. We use appropriate diagnostic methods and gentle corrective techniques to help restore proper neurological communication and overall function. Contact our team to discuss your child’s specific situation.

For information about subscription options and ongoing product pricing, visit the BioLimitless website at biolimitless.com. BioLimitless manages all physical product sales, subscriptions, and fulfi

Neuro Arp Wave therapy uses a specialized 50,000 galvanic DC current to stimulate the vagus nerve and activate the parasympathetic nervous system. This advanced modality may help support neurological rebalancing by encouraging the brain to communicate more effectively with the body’s organs and systems.

At Nepute Wellness, we use Neuro Arp Wave as part of our approach to addressing the root cause rather than masking symptoms. Many patients who experience chronic pain, neuropathy, or neurological imbalances may benefit from this therapy as part of their personalized care plan.

All our diagnostic tests are performed using validated, clinically-proven methods. DNA testing uses CLIA-certified laboratories. HRV, thermography, and sEMG use FDA-cleared equipment. Blood panels use standard laboratory protocols. We use evidence-based reference ranges and interpret results in context of your complete health picture.

BioLimitless is committed to quality and transparency in every formula. Their supplement line, including Detox Pro Plus, Master Microbiotics, Cellular Reset, Neuro Reboot, and Cell Signals, is deve

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Want to get on or get back on the road to health? Tired of being tired? Tired of addressing symptoms instead of what causes them? This is the place that helps the whole body. Dr Eric’s brain is a catalog of all things health. His people are top notch. A special shout-out for Mandy who went above and beyond today. Thanks to all your caring hearts.
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I am a patient at Dr Eric Nepute ‘s office Nepute Wellness Center in St Louis MO. I can’t say enough good things about this practice. From the time you walk in the door and are greeted at the front desk by Haley and Deidra. They are so friendly and helpful. So very organized and always get back to you promptly with answers for your questions. The staff is very friendly and take care of you like family. As far as Dr. Nepute he brought me out of one of the worst times of my life. Last summer at the end of July 2025 I began to have tremors and shaking. I had been to several doctors who had no idea how to help me. Dr Nepute knew right away what was causing the shakiness and treated me. Within 2 weeks the tremors had stopped. My vagus nerve was the cause. I am continuing to work with Dr Nepute on my overall health and other issues. He is so patient and takes his time with you to explain your test results and gives solutions on how to improve your health. He is very thorough and knowledgeable. He truly is the most caring doctor I know and really wants to see his patients get better and enjoy a healthy life. He is one in a million.
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Every staff member, every doctor and especially Dr. Nepute are some of the most upbeat, caring, professional individuals you’ll ever find in one place. Dr Nepute has created a culture with his staff where everyone there operates from a perspective of helping every patient live their lives with health and wellness. Whether you need a simple adjustment or you’re dealing with something more serious like an autoimmune disease or even cancer doctor Nepute and his staff can help. I would highly recommend anyone to go there if there’s ever an issue with anything in their health.
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Functional Medicine Clinic in St. Louis, MO

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