Functional health consulting for digestive and gut health in Knoxville, TN

At Main Health Collective, we take a whole-body, individualized approach to support digestive and gut health concerns.

Whether your goal is to better understand your digestion, reduce discomfort after eating, or gain clarity around ongoing gut-related symptoms, our digestive health support is built around you. We focus on education, lifestyle guidance, and root-cause conversations to help you feel more empowered in your health decisions. Schedule a free discovery call with Dr. Marissa to see if this style of functional health consulting is the right fit for what you’re experiencing or looking for.

Digestive and Gut Health Conditions

  • Excessive gas

  • Bloating

  • Constipation

  • Loose stools or irregular bowel movements

  • Heartburn/Acid Reflux

  • Discomfort after meals

  • Changes in appetite

  • Feeling overly full or heavy after meals

  • Food sensitivities

  • Digestive discomfort

Please recognize that this list is not exhaustive of every condition we are able to support with functional health consulting.

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Our Approach to Digestive & Gut Health Support


We begin with a comprehensive, root-cause-based conversation focused on your digestive health concerns. This may include exploring symptoms such as how you feel after eating, bowel patterns, food reactions, stress responses, and how digestion may be changing over time. We look beyond isolated symptoms to better understand how nutrition, lifestyle, stress, sleep, and daily habits may be influencing digestive function and overall gut comfort.

1. Assess the Root-Cause


2. Support the Body’s Natural Balance

Our approach focuses on supporting the body’s innate ability to adapt and regulate. Instead of targeting symptoms directly, we emphasize foundational lifestyle and nutrition guidance designed to reduce unnecessary stress on the system and support overall balance. Recommendations may include guidance around food choices, daily rhythms, stress support, and the thoughtful use of supplements, herbal remedies, and homeopathic remedies when appropriate.


3. Build Strong, Sustainable Foundations

Many health concerns are interconnected, which is why we prioritize foundational habits that support the whole body. This phase focuses on consistency and sustainability, helping you implement realistic changes that can be maintained long-term.
Education plays a central role, empowering you with a deeper understanding of your body and how everyday choices influence overall well-being.


4. Reclaim Confidence in your Health

Our goal is not short-term symptom management, but long-term confidence and autonomy in your health. Through ongoing education and support, we help you build skills and awareness that apply across changing health goals and life stages.
This approach allows you to feel informed, supported, and capable of caring for your body over time—no matter the condition or focus area.


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It’s important to note that no two individuals are the same. That’s why every care plan is tailored to the individual. At Main Health Collective, our functional health consulting focuses on education, lifestyle support, and individualized guidance to help you feel supported, informed, and confident in your health.

  • “Absolutely love Dr. Marissa! She has explained so much to me on one visit than all my doctors combined in several years! She was able to tell me things from reading my bloodwork that my doctors did not even pick up. Honestly amazing! She is so sweet, really listens and like I said really explains things! I highly recommend her!"

    - Angela

  • "Dr. (Zach) Main is the best!! He's not only a chiropractor but a true rehab specialist. He’s been so amazing to work with as a runner after an ankle sprain and heel pain. Dr. Main is patient, kind and explains everything along the way!"

    - Shanna

  • “I was under the care of Dr. Marissa for about a year, and from the very beginning I felt completely comfortable with her. She was truly invested in helping me and always took the time to explain anything I needed more information on. Dr. Marissa genuinely listened to and understood my concerns, which is something that feels rare these days. I’m very grateful for the care she provided throughout my time as her patient. I highly recommend Dr. Marissa!"

    - Sandy

  • “Had a great experience with Dr. (Zach) Main! Came in with back and hip problems I had been dealing with for a year and a half but with adjustments and functional rehab work, I am back to feeling just as good if not better than I was before my injury. Would highly recommend for your chiropractic care.”

    - Thomas