When Turbulence Changes Appetite: A Polyvagal Reframe of Eating Disorders

From the Conference Room to an Airplane

I recently attended a training on Polyvagal Theory led by a presenter I had heard speak before on Polyvagal Theory and My Grandmother’s Hands, and I was genuinely looking forward to sitting in the audience rather than standing at the front of the room. There is something grounding about hearing another clinician articulate a framework you care deeply about and noticing where it overlaps with your own embodied understanding. It allows you to feel your own nervous system respond in real time rather than organizing yourself to teach it.

What struck me most during this training was not simply the content, but the way it was delivered. They did not just explain Polyvagal Theory; they enacted it. The nervous system was not presented as a diagram projected onto a screen but as a lived, sensory experience that unfolded in the room. We were not being told about the ladder — we were moving on it.

The Airport as a Nervous System Map

They invited us to imagine our own travels — perhaps the flight that brought us there, or at least the last time we were on an airplane. The presenter playfully set the scene: you’re finally settled in your seat, the overhead bins are closed, and the flight attendants have just passed out pretzels. “Let’s pretend,” they said, “these are the most amazing pretzels you’ve ever tasted and you can’t wait to start eating them.” You can almost feel the anticipation — the small pleasure of tearing open the bag, the ordinary comfort of snacking while waiting for takeoff.

And then, without warning, the plane hits turbulence.

The pilot’s voice comes on and asks the flight attendants to take their seats. Your stomach drops. Your grip tightens on the armrest. Suddenly those incredible pretzels are the last thing on your mind. You are not prioritizing chewing. You are not analyzing flavor. You are likely taking a slow breath, scanning for cues, orienting to safety. Your digestive system is no longer the main event; your survival system is.

A minute later, the captain returns to the intercom, this time in a softer, steadier tone: “Sorry folks, we’ve encountered a bit of turbulence. It looks like we’ve got about another ten minutes of this, but we’ll be through it soon.” There’s something about that voice — the pacing, the predictability, the sense that someone knows what’s happening. Your heart begins to climb back out of your stomach. The experience shifts from threat to manageable discomfort. A few minutes later, the turbulence stops, your body settles into the seat again, and you find yourself ready to nibble on those pretzels while catching up on your latest episode of Bridgerton.

As the presenters moved through this story, their tone changed with each shift in state. Their shoulders subtly rose and fell. Their cadence sped up and slowed down. You could feel the parasympathetic settling when the “captain” reassured us. It was almost cinematic, like a flight attendant’s calm voice floating through the cabin. The audience laughed because we recognized ourselves in it. Without a single slide, we experienced the movement up and down the Polyvagal ladder.

And in that simple metaphor, something profound clicked.

When the Pretzels Don’t Sound Good Anymore

Earlier in the exercise, they had joked about airline snacks and how exciting it used to feel to open a little bag of pretzels. There was humor in it, nostalgia even. But when the imagined turbulence began, the tone shifted. The body tightened. The stomach fluttered. The jaw stopped chewing.

Suddenly, those pretzels did not sound appealing.

Not because of willpower. Not because of food rules. Not because of a conscious decision to restrict. They did not sound good because the nervous system had shifted state.

In sympathetic activation, blood flow redirects. Digestion is no longer prioritized. When the body perceives potential threat—even something as benign as turbulence….

—it will prioritize safety first.

Appetite becomes secondary.

The simplicity of that image landed deeply for me. It was such an ordinary example, yet it offered a powerful reframe for the eating behaviors we so often pathologize without fully Because nothing about the pretzels changed.

The ingredients were the same. Your preferences were the same. Your intention to eat them was the same. What changed was your state. In one moment, your nervous system perceived relative safety and digestion was online. In the next, turbulence signaled uncertainty, and your system reorganized around protection. Blood flow shifted. Muscles tightened. The stomach dropped — literally and metaphorically. Appetite was no longer prioritized, not because of a cognitive decision, but because of physiology.

Nothing About the Food Changed

This is where the metaphor moves beyond clever storytelling and into clinical significance. When we sit with clients who are struggling to eat, or who describe that food suddenly “doesn’t sound good,” or who feel nauseated, shut down, or activated around meals, we often move quickly to thoughts. What are you telling yourself? What belief got triggered? What fear is driving this? What is your “eating disorder thought?’

Those questions matter. But if we stop there, we risk missing the ladder.

The nervous system organizes first. Cognition often follows.

If sympathetic activation is high — if someone feels scrutinized, rushed, judged, uncertain, or relationally unsafe — digestion may downshift. If dorsal shutdown is present — with things like numbness, heaviness, collapse — appetite may flatten entirely. And when safety returns, even briefly, hunger can reappear without anyone having “convinced” the mind of anything.

State Before Story

Eating disorders are complex. They are layered, relational, developmental, and often entwined with identity and coping strategies that made sense at one time. This lens does not reduce them to autonomic reflexes. It expands the formulation.

When we exclude nervous system state, we risk pathologizing physiology.

In the turbulence example, no one would accuse you of lacking discipline because you stopped eating the pretzels. We intuitively understand that your body was responding to perceived threat. Yet in clinical spaces, when someone cannot finish a meal, we sometimes default to interpretations of resistance, avoidance, or control without first asking what turbulence might have just occurred internally.

Was there a comment at the table?
A subtle shift in tone?
A body sensation?
A memory?
A relational cue?

Before behavior, there was state. Before state, there was perception.

The Autonomic Shift We Don’t See

Polyvagal Theory offers language for these invisible shifts. It reminds us that the autonomic nervous system is constantly scanning for cues of safety and danger, often outside of conscious awareness. That scanning shapes digestion, muscle tone, breath, appetite, and capacity for connection.

Appetite is not a moral trait. It is state dependent.

When the system detects safety, digestion can proceed. When it detects threat — even subtle threat — digestion can pause. This is not defiance. It is biology.

And when we understand that, our clinical posture softens.

The Captain’s Voice: Co-Regulation in Action

I noticed how the presenter’s voice changed everything in the story. The turbulence did not immediately stop, but the nervous system shifted because someone steady signaled predictability and containment. The body responded to tone, not to logic.

In therapy, we often serve as that voice.

When we say, “That makes sense that it didn’t sound good in that moment,” or “Your body may have been in protection mode,” we are not excusing behaviors. We are helping the system feel understood. And understanding is regulating.

When the Goal Isn’t the Pretzels

Sometimes the goal is not forcing the pretzels.

Sometimes the goal is helping the body feel safe enough that they sound good again.

That shift may feel subtle, but clinically it changes everything. It moves us from confrontation to curiosity, from correction to regulation, from blame to biology. And when clients begin to recognize their own autonomic shifts, they gain language that reduces shame and increases agency.

Nothing about the pretzels changed.

The turbulence did.

And when we start treating turbulence instead of judging appetite, we begin to reconceptualize eating disorders through a nervous system lens that can add in more compassionate and understanding.