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Your nervous system, stress, and healing, all connected.

Chiropractic Wiki is a calm, modern reference for how the spine, brain, and body talk to each other, so you can see the why behind symptoms, stress, and care, not just the labels.

Why this wiki

Brain & body

Follow how messages move between brain and tissues, and what happens when that signal gets noisy.

Stress & load

See stress as something the system carries (not just a mood), so adaptation and recovery make sense.

Salutogenesis

Health as capacity: how your body creates resilience when communication and environment line up.

Did you know?

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The Vertebrae

Vertebrae are the individual bones that stack to form the spinal column. They help support posture, protect the spinal cord, and allow movement through the neck and back. Each segment supplies nerves to specific organs and muscles. Use the search inside the diagram to filter roots and automatically highlight the first match on the spine; tap a root chip beside the detail panel for any level. You can also click the 3D model or brain directly. Learn more about subluxation.

Quick search
Filters roots and highlights the first match on the spine
Filters roots • highlights first match on spine

Cervical (C1–C7)

Thoracic (T1–T12)

Lumbar (L1–L5)

Sacral

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Meric chart showing spinal nerve connections

What Is a Subluxation


Subluxation (Sub = Less + Lux = Light) is often described in chiropractic as a spinal segment that is not moving or functioning as well as it should. Why? Because when a vertebra is subluxed, it is not able to move as freely as it should. This can put pressure on the nerves that run through the spine, interrupting nerve flow. Let's use a real-life example to illustrate this. You are watering your garden, water is flowing freely, and your plants are growing. Now, imagine you have a kink in your hose, the water isn't flowing freely, and your plants aren't growing. This is a subluxation. The same goes for your spine: if a vertebra is subluxed, it is not able to move as freely as it should be. This can put pressure on the nerves that run through the spine, interrupting nerve flow, and your organs, muscles, or brain may not receive the proper messages, leading to breakdown due to a lack of coherent communication. Visit, How do all three stresses affect the body? to find out why this happens.

Subluxation analogy: garden hose kink vs nerve flow in the spine

The Safety Pin Metaphor


What is the Safety Pin metaphor?

The Safety Pin is a chiropractic metaphor for explaining coherent communication between the body and brain; it illustrates how communication is disrupted when a disconnection caused by subluxation occurs. Think about the left side of the pin being your efferent nerve (brain to the body) and the right side of the pin being your afferent nerve (body to the brain).


When the Safety Pin is closed

Simply, when the pin is closed, the message from the brain reaches its target organ, and the organ can send a message back.


When the Safety Pin is open

When the pin is open, the message from the brain may reach its target organ; however, when it's time for the organ to send a message back, the message is not able to reach the brain due to the pin being open. Therefore, the brain cannot and will not respond correctly; the messages from the brain become inaccurate and distorted, leading to breakdown and a chiropractic term called "dis-ease," and eventually to disease. The Safety Pin being open is a subluxation.


Let's take a look at an example of what this may look like in the body.

  • 1. You eat dinner
  • 2. Your stomach finishes digesting your dinner
  • 3. Your stomach sends a message to your brain that you are finished digesting
  • 4. Due to a subluxation (safety pin open), the message from your stomach to your brain is not reaching your brain correctly.
  • 5. Your brain continues to signal your stomach to produce acid for digestion
  • 6. You start to experience acid reflux
  • 7. You experience acid reflux for too long, and now you develop stomach ulcers
  • 8. You experience stomach ulcers for too long, and now you develop stomach cancer
  • BABC

    So why chiropractic?


    Chiropractic isn't just about pain, posture, and headaches. Chiropractic focuses on how the nervous system is functioning, how well your brain is talking to your body, and how it is responding. After all, our brain is extremely intelligent; it is the only thing in existence that heals your body. There is nothing external that has ever healed your body. But how does chiropractic actually do this? Well, chiropractors look for subluxations in the spine and apply pressure to allow the vertebrae to move. It sounds so simple that no one really believes it, but doing this has a life-changing impact. Removing subluxation removes the 'kink' (from our hose example) and allows the nerve to communicate properly between our brain and body (refer to the safety pin to visualise). This means that coherent and accurate messages are being communicated, allowing our brains to heal us. Without correct information, we cannot heal properly. You may also hear your chiropractor talk to you about your habits, food, posture, and daily life. We will get into this more in the What is stress? tab, and why they talk about this, and why it is very important to your health.

    What is the Nervous System?


    Content coming soon.

    Polyvagal Theory


    Content coming soon.

    Adaptability and Environment


    What is adaptability? Why is it essential?

    Adaptability is the essential life system; without it, we will not survive. The environment presents many changes, challenges, and threats. Our body must take this information and find a way to integrate it so we have the best chances for survival. Why is it essential? Well, for example, over time, the climate starts to warm, and our bodies must adapt and change to best fit the new environment, as previously our bodies may not have been able to survive such warm conditions. We can apply this example to exercise too; we train and push ourselves so our bodies can change and adapt to our new habits. This gives our bodies the best chance of survival in our new personal conditions.

    How does adaptability work?

    The nervous system is responsible for how the entire body functions, including how cells and tissues communicate with the outside environment. What we sense, combined with what we believe, gets processed by the body, and over time our cells adapt to the environment we’re repeatedly exposed to.

    When we can't adapt

    Think about a house with limited electrical capacity. If too much electricity runs through it, the breaker trips to protect the system from damage. Our bodies work in a very similar way. When we’re exposed to too much stress with not enough resources to handle it, the body can’t adapt no matter how hard it tries. And the body will always try, because adaptability is how we survive. But when that limit is reached, something has to change. Instead of maintaining normal function, the nervous system shifts the body’s physiology in an attempt to cope. That shift is what we experience as symptoms. In other words, symptoms aren’t random; they’re the result of the body no longer being able to adapt. And in today’s world, that’s happening more than ever. Constant stress, toxic work environments, financial pressure, poor nutrition, lack of movement, and not enough sleep all add up. At some point, the body reaches its limit, and when it does, it starts getting your attention. The body’s version of “flipping the breaker” is what we call a subluxation: an attempt to protect itself from being overwhelmed.

    Adaptive Homeostasis

    Diagram: allostatic load, showing cumulative physiological strain when stress responses do not fully recover.

    Content coming soon.

    Diagram: adaptive range and homeostasis, healthy bandwidth for physiological adaptation.

    Content coming soon.

    The 7 Logical Steps to Life



    Infographic titled Root Cause Health / Life Equation: seven columns from Disease through Signs and Symptoms, Physiology, Nervous System, Stress, Failure to adapt, to Environment, with connecting arrows. Original by Dr Adam McKenzie.

    The 7 logical steps to life 

    Here are the 7 logical steps to how almost all health conditions and diseases are caused by the environment. How can that be? Think of any disease or condition, and start from the disease tab on the right. Follow the arrows and answer in your head; continue to the next step, and so on, until you reach the environment. Mind-blowing!


    What is the difference between Salutogenesis and Pathogenesis?

    • Salutogenesis means creating health
    • Pathogenesis means how disease develops

    Chiropractors' main goal is to take a holistic view of the body, which means they focus on the left side of our root-cause of health/life equation. Chiropractors allow your body to create health naturally, just like our bodies' intent, AKA salutogenesis. 
    The medical system, however, focuses on the right side by managing disease and unnaturally covering symptoms.

    So what would you pick? What system will you use for your health? Salutogenesis or Pathogenesis? But to accurately answer this question, let's learn what the entity actually is and what distinguishes these two statements...

    Health and Disease, what is the Entity?

    Think about light and dark for a second. Darkness isn’t actually something you can add; it’s just what you get when there’s no light. Light is the real, measurable thing. You can increase it, decrease it, and actually quantify it. Darkness is just the absence of it. Same goes for heat and cold. Cold isn’t something you “add” to a room; you remove heat and it feels cold. Heat is the actual variable. It’s measurable, it’s real, and it’s what changes. Cold is just what’s left when heat drops. Now apply that idea to health and disease. Disease isn’t really something you “add” to the body in the way people often think. It’s more like what shows up when health is lacking. Health is the real variable, the thing that can be built up or broken down. It’s dynamic, it changes, and it can be strengthened. And here’s the important shift: health isn’t just the absence of symptoms. Just because nothing hurts or seems wrong doesn’t mean the body is functioning at its best. Real health is about adaptability: how well your body can respond to physical, chemical, and emotional stress. If your ability to adapt is compromised, even slightly, you’re not operating at full health, even if you don’t feel “sick.” And that’s where symptoms come in. They’re not the problem themselves, but signals. They’re the body’s way of showing that adaptability is being challenged.

    What are symptoms? Do we really ‘get sick’?


    What are Symptoms?

    Symptoms aren’t the enemy. They’re actually your body trying to help you. They’re a built-in communication system. When something’s off, your body doesn’t stay silent… it sends a message. The problem is, most of us have been taught to ignore that message instead of listening to it. Think about something simple like a headache. The usual response is to take something to make it go away. That’s the pathogenesis approach: covering it up so you don’t feel it anymore. But there’s another way to look at it. Instead of asking, “How do I get rid of this?”, you ask, “Why is this happening?” That’s a more salutogenic approach, focusing on the cause, not just the symptom. Because a symptom doesn’t just appear randomly. It’s usually telling you that your body isn’t adapting well to some kind of stress. Maybe you’re dehydrated. Maybe you haven’t slept properly. Maybe you’ve been sitting too much, or not moving enough. Or maybe it’s mental stress that’s been building up in the background. When you actually stop and look at those factors, you’ll often find the answer. And once you address the cause, the symptom doesn’t need to be there anymore because its job is done. That’s what it means to actually listen to your body. Relying on medications to silence symptoms without understanding the cause can become a problem. If you keep overriding your body’s signals, you’re not solving anything; you’re just turning the volume down. And over time, that can make you more disconnected from what your body is trying to tell you. At the core of it, health usually breaks down in pretty simple ways: either too much of something your body can’t handle, or not enough of something it needs. Symptoms are the body’s way of saying: something needs to change. 

    Do we really 'get sick'?

    We've just covered salutogenesis, pathogenesis, symptoms, and the idea of health as a core element. So, try telling yourself these two things:

    • "Sickness is just lacking health; we don't gain sickness, we only gain or lose health"
    • "I'm getting sick"

    You might be thinking that sounds contradictory, and you're right. But why is that? When we say "I'm getting sick," it implies we're acquiring an illness. However, the reality is that we're actually losing our health. So, the next time you're feeling unwell, instead of saying "I'm sick," try saying "I've lost some health." You might say, "But I really did catch a cold!" Did you? Or perhaps you've been under a lot of stress lately, which weakened your immune system? What if you could adjust to your environment more effectively? Do you think you'd have the internal resources to ward off the bug before it starts to show symptoms? I think so!

    What is stress?


    Content coming soon.

    Chemical stress


    Content coming soon.

    Physical stress


    Content coming soon.

    Mental stress


    Content coming soon.

    How do all three stresses affect the body?


    Content coming soon.

    Brain Battery


    Content coming soon.

    What are symptoms?


    Symptoms are signals that something in the body or mind may be out of balance. They can be physical (pain, fatigue), cognitive (brain fog), emotional (irritability), or behavioral (sleep changes). A single symptom can have many causes, so patterns over time often matter more than any single moment.

    HRV / What is it?


    Content coming soon.

    Why do we need sleep?


    Content coming soon.

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