How I’m Learning Systems Biology in Functional Medicine Health Coaching

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When I first started training to become a functional medicine health coach, something clicked pretty quickly…….symptoms don’t just show up on their own. They’re connected. Layered. Tied into patterns that aren’t always obvious at first glance.

And honestly, that changed everything for me.

calm wellness workspace with journal tea candle and natural light for functional medicine systems biology post

Right now in my training, I’m learning about systems biology. It’s basically a way of looking at the body as one connected system instead of a bunch of separate parts.

And the more I learn, the more I realize how much this way of thinking shifts how we understand chronic illness…..and healing.

So if you’ve ever wondered what “root-cause healing” actually looks like, or why functional medicine approaches things differently, here’s a little bit of what I’m learning along the way.

Quick Look: Systems Biology in Functional Medicine

If you just want a simple version before diving in:
The body works as one connected system, not separate parts
Symptoms are usually linked through deeper root causes
Functional medicine asks why symptoms are happening
The goal is to address patterns, not just manage symptoms
Systems biology helps explain how everything connects

What Systems Biology Means in Functional Medicine

At its core, systems biology just means this:

Your body isn’t working in isolation.

Your gut affects your hormones. Your hormones affect your sleep. Your sleep affects your energy, your mood…….everything.

It’s all connected.

Even organizations like Cleveland Clinic explain how different body systems constantly influence each other.

So instead of asking, “What disease does this person have?”

Functional medicine asks something a little deeper:

“Why is this happening in the first place?”

That one shift….it changes everything.

Because now we’re not just chasing symptoms. We’re looking for patterns.

This whole approach is actually built on frameworks developed by the Institute for Functional Medicine.

As a nurse, I’ve seen firsthand how frustrating it is for people when care feels fragmented. One symptom here, another there but no one is stepping back to look at the full picture.

This approach finally does that.

systems biology in functional medicine showing interconnected body systems and wellness balance

The Seven Core Systems of Functional Medicine (Think of Them Like Pieces of the Same Puzzle)

In functional medicine, everything gets organized into a few core systems. And once you start seeing them this way, it actually makes a lot of sense.

Assimilation

This is your digestion, absorption, and gut health.

If this isn’t working well, your body isn’t getting what it needs to function…..period.

Defense and Repair

Your immune system and inflammation response.

When this is off, inflammation can quietly drive a lot of chronic issues.

Energy Production

This happens at the cellular level (mitochondria).

It’s what gives you the energy to think, move, and heal.

Transport

Blood flow, circulation, nutrient delivery.

Basically, how everything gets where it needs to go.

Communication

Hormones and neurotransmitters.

This is how your body sends messages and keeps everything in sync.

Structural Integrity

Your physical frameworks: cell membranes, tissues, barriers. It all matters more than we usually think.

And here’s the part that really stuck with me, when one of these starts to struggle, it doesn’t stay isolated. It ripples.

That’s why people don’t just have one symptom. They have a cluster of them.

functional medicine symptom tracker printable for tracking pain mood sleep and daily health patterns

Learning to Think in Root Causes (The “5 Whys”)

One of the tools I’ve been learning is something called the “5 Whys.”

It’s simple, but kind of powerful.

You take a symptom…..and just keep asking why.

For example:

Someone has trouble sleeping:

  • Why? Maybe blood sugar is unstable.
  • Why? Maybe they’re skipping meals or eating late.
  • Why? Maybe stress is throwing off their routine.

And suddenly…… it’s not just about sleep anymore.

That’s the difference. You’re not just treating what shows up on the surface. You’re following the thread all the way back.

This is also why I’ve started tracking my patterns more intentionally, because once you see them, you can’t unsee them.

(If you want something simple to start, I created a Symptom Tracker you can use to begin connecting your own patterns.)

The ATM Framework (This One Actually Helps It All Make Sense)

Functional medicine also looks at someone’s health story through three lenses:

  • Antecedents – things that made someone more vulnerable
  • Triggers – what started the issue
  • Mediators – what’s keeping it going right now

And this part really stood out to me, mediators are where the change happens. Because that’s what’s happening in the present. That’s where people actually have some control.

Common Root Causes Behind Chronic Symptoms

The more I learn, the more I notice the same root patterns showing up behind a lot of chronic symptoms:

  • gut issue
  • chronic inflammation
  • stress dysregulation
  • blood sugar imbalance
  • toxin overload
  • low energy at the cellular level

And none of these exist on their own. They overlap. They feed into each other.

Which explains why so many people feel like their symptoms don’t fit into just one box. Because they don’t.

what I’m learning about root cause healing in functional medicine lifestyle image with journal tea and candle

Why Systems Thinking Is Changing How I View Healing

Training in functional medicine health coaching is teaching me that the body is not broken. It’s responding.

And when you start to remove the things that are getting in the way, the body actually knows what to do.

That perspective hits differently, especially coming from a nursing background where things can feel very protocol-driven and segmented.

As I continue documenting my journey into functional medicine, I hope to help others understand that there is another way to approach chronic illness – one rooted in connection, investigation, and restoration.

It’s also why I’ve been writing more about slowing down, reducing stress, and creating space for healing….(something I’ve been exploring in my Choosing Peace series)

If You’ve Ever Felt Like Something Was Being Missed….

You’re not wrong.

If your symptoms have ever felt scattered, confusing, or hard to explain, there’s usually a reason.

And there is a way to look deeper.

I’m still learning all of this, but I’ll keep sharing what I’m discovering along the way, because I know I’m not the only one who’s been searching for a different way to understand health.

What is systems biology in functional medicine?

Systems biology in functional medicine looks at the body as an interconnected network rather than separate organs. It focuses on how different systems influence each other and contribute to overall health or disease.

How is functional medicine different from traditional medicine?

Functional medicine focuses on identifying and addressing root causes of symptoms, while traditional medicine often focuses on diagnosing and managing specific conditions.

What is the “5 Whys” method in functional medicine?

The “5 Whys” is a simple way to trace symptoms back to their root cause by repeatedly asking why a symptom is happening until the deeper issue is uncovered.

What does the ATM framework stand for?

ATM stands for Antecedents, Triggers, and Mediators. It helps organize a person’s health history to better understand what caused and continues to influence their symptoms.

A warm author bio graphic featuring Kari and her son Carson sitting together in a beautiful outdoor garden, with text introducing them as the creators of the Barefoot Drifter travel blog

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