How Worry Loops Into Anxiety
(Let’s approach this from the perspective of “anxiety” being a word that describes an experience in the body and mind, not a label of one’s mental and emotional well-being.)
Anxiety is the brain’s natural way of responding to disruptions in our reality—both external and internal.
We all hold within our brains a physical, real neural pathway(s), often referred to as the worry circuit or loop, which plays a central role in how anxiety takes hold. There are three main areas of the brain involved in this circuit, although several other structures also contribute to how anxiety is experienced in the body.
It is helpful to know that this system is designed to protect you. To help you anticipate danger and quickly respond.
Anxiety is what it can feel like when this system stays active for too long or struggles to find resolution.
What is worry?
Worry is a cognitive process focused on potential future threats.
It often shows up as, but not limited to:
What if…
My loved ones are not safe or healthy…
I can’t pay the rent/mortgage…
I am sick…
They don’t like me…
I’ll be too tired tomorrow because I didn’t sleep…
etc, etc
These thoughts can run quietly in the background, looping throughout the day, without you even being aware of them. Going unnoticed and not processed, these thoughts often become louder at night.
As they run quietly in the background, the body is responding—this is when we begin to feel anxious and may not know why. Or why our bodies stay in a state of low level nervous system activation, holding patterns in the body are created and may become areas of chronic pain or imbalance.
A healthy worry process
A concern arises.
A plan is made.
Action is taken.
The system returns to ease.
When the loop gets stuck
A concern arises.
A plan is made… but then questioned.
Doubt leads back to worry.
Or:
Action is taken,
but the mind returns to second-guess.
This creates a loop that prevents resolution and keeps the nervous system activated.
How past experience shapes the loop
Past experiences shape how this loop functions. For brains that hold trauma memories, this pattern is a very normal occurrence. The system is not only evaluating what is happening in the present moment, but also drawing from past experiences of fear, grief, or times when safety was not restored.
This includes how the body felt during those moments.
The brain is not overreacting, it is doing what it has learned to do. It is possible this begins early in life. A child may not have had the opportunity to watch a caregiver move through worry and resolution. Decisions may have felt unclear, inconsistent, or unsafe. Or the child may have had to navigate these experiences on their own from a very young age.
If past experiences did not lead to a clear sense of safety or resolution, the loop may continue searching, trying to find an outcome it has not yet experienced.
This can make it more difficult for the system to settle, even when the present moment is safe.
What we feel in the body
When caught in this loop, you may notice:
upset stomach or acid reflux
a fluttering sensation in the gut
a racing heart or increased breathing
breath holding
difficulty thinking clearly
blurred or narrowed vision
a clenched jaw
tightness in the neck and chest
hip or low back discomfort
fatigue or exhaustion
These sensations are part of the body’s stress response, activated by the brain. We all hold the potential to create a holding pattern which may go unnoticed until we take the time to listen and feel.
Brain structures involved
The amygdala - the worry and fear relay center. It acts as an alarm system, detecting potential danger and triggering the fight-or-flight response. When overactive, it can heighten feelings of fear and worry.
The prefrontal cortex (PFC) - he rational part of the brain that works to regulate and calm the amygdala. When under stress, it may struggle to override these fear responses.
The thalamus - a relay center of the brain, directing information between different regions.
The striatum - involved in movement, motivation, and decision-making. It also plays a role in habitual thought patterns. When worry becomes repetitive, this area can reinforce the cycle.
The hypothalamus - activates the body’s stress response, releasing hormones like cortisol and leading to the physical changes that signal we are feeling anxious.
The hippocampus - processes and stores memories, helping assess whether a situation is truly dangerous or connected to a past experience.
The core of the worry circuit (CSTC loop)
The prefrontal cortex, striatum, and thalamus form the core of the worry circuit, also known as the CSTC loop (Cortex–Striatum–Thalamus–Cortex).
This represents the path the signal takes:
The prefrontal cortex receives the worrying thought
The striatum evaluates whether to act
The thalamus filters the information and determines whether it feels like an immediate threat.
If unclear, the signal is sent back to the prefrontal cortex, continuing the loop until resolution is reached
How the loop unfolds
Worry may begin in the amygdala, in response to an external or internal trigger.
The amygdala communicates with the prefrontal cortex, looking for evaluation.
To make sense of the situation, the prefrontal cortex consults the hippocampus for stored memories.
It then sends information to the striatum to help determine whether action is needed.
All information passes through the thalamus.
If a threat is perceived, the hypothalamus activates a nervous system response—fight, flight, or freeze.
This is when we begin to feel the physical sensations of anxiety.
If a decision remains unclear, the loop continues.
This is one way anxiety can begin. Other times, the body speaks first - and the mind tries to catch up.
Nothing here is broken - just asking to be understood and guided gently back to peace.
There may be moments where having a guided space to listen more closely can feel supportive.
A place to slow the loop, feel the body and begin to more clearly learn what is being communicated.
This is the intention behind Her Wellness Within.
