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Common Conditions & How They Show Up In The Brain


Many chronic conditions are misunderstood because they are viewed as isolated problems rather than expressions of how the brain and nervous system are functioning. Two of the most common—and most misunderstood—conditions we see are depression and fibromyalgia. Both are neurological, adaptive, and rooted in how the brain responds to stress, inflammation, and overload.


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Depression: Not a Flaw or Weakness

Depression is not a character flaw. It is not simply a chemical imbalance.

Depression is an adaptive response to perceived threat, loss, inflammation, chronic stress, or overload. It is the brain’s way of conserving energy and protecting itself when the system has been pushed beyond capacity.


When the brain shifts into a depressive pattern, it reduces reward and joy signaling. This leads to a decrease in spontaneous or casual happiness responses.


Common Symptoms of Depression

Depression can show up as:

  • Low motivation

  • Brain fog

  • Poor or disrupted sleep

  • Loss of pleasure

  • Irritability

  • Fatigue

  • Physical pain

  • Gut dysfunction

  • Increased inflammation


Depression is frequently associated with low serotonin, which is closely tied to vagus nerve function and gut health. When the vagus nerve is underactive or the microbiome is imbalanced, serotonin production and signaling decline.


What Can Drive Depression

Several factors can push the brain into a depressive pattern:

  • Chronic stress or inflammation

  • Cytokine storms and immune activation

  • Blood sugar dysregulation

  • Sleep deprivation

  • Trauma

  • Nutrient deficiencies (B vitamins, omega-3s, magnesium, vitamin C)

  • Lack of sunlight


These factors all increase inflammatory load and decrease the brain’s ability to regulate mood and energy.


Fibromyalgia: Real Pain, Real Neurology

Fibromyalgia is real pain. It is not “in someone’s head.”


Fibromyalgia is a hypersensitive pain system, driven by neurological overactivation. The brain and nervous system amplify signals that should not be painful.


Common symptoms include:

  • Chronic widespread pain

  • Tenderness to pressure, temperature, or chemicals

  • Fatigue that sleep does not resolve

  • Poor sleep quality

  • Headaches

  • Irritable bowel symptoms

  • Anxiety and depression

  • Sensory overload


Fibromyalgia often overlaps with fatigue, sleep disruption, and hypersensitivity—because they share the same neurological drivers.


What We See on EEG in Fibromyalgia

When we analyze brain activity, fibromyalgia shows up in very specific ways.


Frontal Lobes (F3 & F4)

  • A theta-to-alpha ratio below 0.8 predisposes someone to fibromyalgia, sleep issues, chronic fatigue

  • When this marker resolves, the person often transitions into alpha ADD


Alpha ADD commonly presents as:

  • Talking excessively when stressed

  • Distractibility

  • Mental overwhelm


Talking under stress is the most consistent sign we see.


Frontal Fatigue Marker

  • A low alpha over high alpha ratio above 1.5

  • Indicates frontal lobe fatigue and poor regulation


Left–Right Brain Imbalances

We often see:

  • Overproduction of alpha, theta, or beta on one side (commonly the left)

  • Asymmetry increases nervous system stress and pain sensitivity


Back of the Brain (O1)

  • A theta-to-beta ratio below 1.8 at O1 increases vulnerability

  • Indicates poor stress tolerance and subconscious threat scanning


The Primary Driver: Theta–Alpha Ratio

The most important fibromyalgia marker is the theta–alpha ratio.


As the brain speeds up and becomes overstimulated, this ratio drops—driving pain amplification.


This hypersensitivity is often triggered by glial cell activation, also called glial priming.


What Activates Glial Cells

Glial priming can occur due to:

  • Chemical exposures

  • Emotional trauma or chronic stress

  • Head injuries or concussions

  • Infections

  • Autoimmune-driven inflammation


Activated glial cells amplify pain signals, overstimulate nerves, and lock the brain into a hyper-reactive state.


Fibromyalgia Is a Neurological Condition

Fibromyalgia is not a muscle disorder. It is not weakness.


It is a neurological diagnosis characterized by:

  • Hypersensitivity

  • Oversympathetic dominance

  • Nervous system overreactivity


When the brain perceives constant threat, it keeps the body in protection mode—amplifying pain, fatigue, and sensory input.


The Takeaway

Depression and fibromyalgia are not random, and they are not failures of willpower. They are adaptive responses driven by stress, inflammation, and nervous system dysregulation.


When we understand how the brain is functioning—and why—it becomes possible to calm hypersensitivity, restore balance, and support real healing.


The goal is not to suppress symptoms, but to restore safety and regulation to the nervous system.


Life Springs Family Chiropractic – Denver, CO

Call/Text: (303) 770-0605

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