Safe and Sound Protocol (SSP) for Chronic Illness: How Nervous System Regulation Supports POTS and Long COVID

Your body won’t settle, even when your mind knows there’s no danger.

Maybe it’s a flare that comes out of nowhere, or it’s a crash after doing “too much,” even when you thought the amount you aimed for was doable. Maybe you’ve learned to live in a kind of hypervigilance and are always half-scanning your own body for the next thing to go wrong.

If you’re managing a condition like POTS or Long COVID, you already know more about your own physiology than many people will ever have to learn. You track symptoms. You’ve adjusted food, pacing, medications, environments. And yet even with all of that effort, your nervous system often still seems to be running its own mysterious program.

I want to slow down and talk about something that doesn’t get explained very often: what your nervous system (separate from, but deeply connected to, your medical condition) might be doing in all of this. This article will explain why nervous system regulation therapy, through something like the Safe and Sound Protocol (SSP), can be a powerful piece of a larger picture of care.

I also want to say clearly upfront: I’m a somatic psychotherapist, not a physician. I cannot diagnose, treat, or offer medical opinions on POTS or Long COVID – that’s the job of your medical team, and this article isn’t a substitute for their care. What I can speak to is the nervous system component: what the research shows about how it’s connected to these conditions, and how nervous system regulation therapy like SSP might fit alongside the medical care you’re already receiving.

What’s Actually Happening in Your Body?

Your autonomic nervous system (ANS) is the part of you that runs in the background – your heart rate, digestion, immune activity, temperature regulation. It is made of all the things you don’t consciously direct. A big part of how it decides what to do, moment to moment, comes down to something called neuroception: your nervous system’s often-unconscious assessment of whether you’re safe or in danger. This often happens well below the level of conscious thought.

When neuroception reads “danger,” even when there’s no actual threat in front of you, your body shifts into a more activated state. For some people, this shows up as being wired and on edge. For others, it can look more like shutting down, going flat, or feeling far away from your own body.

When your nervous system is stuck in that defensive state, it doesn’t just affect how you feel emotionally. It affects your physical body too.

The Nervous System–Immune System Connection

This isn’t just a wellness concept, it’s an area of real, ongoing scientific research. One of the most well-established findings in this space comes from the work of Dr. Kevin Tracey and colleagues, who identified what’s now called the cholinergic anti-inflammatory pathway. In simpler terms: your vagus nerve (a major nerve connecting your brain to much of your body) acts like a brake pedal on inflammation. When it signals properly, it helps tell your immune cells to dial back inflammatory activity. When that signaling is disrupted, inflammation can run longer and more intensely than it needs to.

This matters because so many chronic conditions, including the two we’re focusing on here, involve a nervous system and immune system that aren’t communicating the way they’re supposed to.

POTS Treatment and the Nervous System: What the Research Shows

POTS (postural orthostatic tachycardia syndrome) is a form of dysautonomia where your heart rate spikes dramatically when you stand up. Research has consistently found that people with POTS show measurable differences in how their vagus nerve is functioning, including a blunted “vagal brake” response and lower heart rate variability (a common marker researchers use to measure how flexible and responsive your nervous system is) compared to people without POTS.

POTS and vagus nerve connection isn’t a fringe idea. It is well-documented enough that researchers are actively studying vagus nerve stimulation as a potential POTS treatment, with early studies showing improvements in heart rate variability and symptom burden. That research is still developing, but it points to something important: your nervous system’s regulation of your heart and blood vessels isn’t a side note in POTS. It may be close to the center of it. Nervous system regulation therapy, including SSP, is increasingly considered a complementary piece of a fuller POTS treatment picture – alongside, never instead of, your medical care.

Long COVID Treatment and the Vagus Nerve: What Recent Research Shows

The research connecting Long COVID to vagus nerve dysfunction is robust.

Multiple studies have found reduced heart rate variability in Long COVID patients, consistent with impaired vagal activity. More strikingly, researchers have found direct evidence of inflammation in the vagus nerve itself following COVID-19 infection. A very recent study went a step further and used biopsies to show measurable, structural damage to vagal nerve fibers in Long COVID patients.

This is part of why dysautonomia, including POTS-like symptoms, is now considered one of the central features of Long COVID by many researchers, rather than a secondary or unusual complication as previously thought. As with POTS, this has led to growing clinical interest in nervous system regulation therapy as a complementary part of Long COVID treatment and recovery.

Where Nervous System Regulation Fits Into POTS and Long COVID Treatment

I’ll start off this section by saying that there are many, many paths to healing. Safe and Sound Protocol is one of them, not the only one you can choose from.

The Safe and Sound Protocol is a listening-based therapy that works with your neuroception, using specially filtered music to help shift your nervous system out of a threat-oriented state and toward one that supports co-regulation (the natural calming that happens when your nervous system settles alongside a steady, attuned presence) and resourcing (your internal and external reserves of felt safety). SSP’s own research base, with actual clinical studies, is centered on autism spectrum disorder and auditory sensitivity, with promising but still-developing research underway on trauma and anxiety.

There are currently no published clinical studies testing SSP specifically on POTS or Long COVID. What we do have instead is a well-supported picture of vagal and autonomic dysfunction within these conditions, and a therapy, SSP, that’s specifically designed to work with that same system. It is not the same as a proven treatment for your diagnosis, and I do not want to suggest otherwise.

What this means in practice: I don’t offer SSP as something that treats or cures POTS or Long COVID. I offer it as a way to support your nervous system’s capacity for regulation, which, given everything above, may in turn support how your body handles stress, and how much bandwidth you have for managing a condition that already asks so much of you.

What Working Together for Safe and Sound Protocol Might Look Like

If this resonates, here’s roughly what the process looks like: we start with a Safe and Sound intake session, where I’ll also train you on how to pace your own listening based on how your body responds. From there, you’d move through the protocol at a pace that fits your nervous system, staying in touch with me by email throughout so we can adjust as needed. We close with a debrief session to talk through what came up and where to go from here.

Throughout, this work happens alongside whatever medical care you’re already receiving, not instead of it. The Safe and Sound Protocol is not a replacement for anything your doctors have recommended.

I work with clients in-person in Chicago and via telehealth throughout Illinois, so this kind of support is available whether you’re local or connecting from elsewhere in the state. If you are out of state, please feel free to contact me and I can likely match you to someone who may be a fit.

A Few Things to Know Before We Start

– SSP is not a treatment or cure for POTS, Long COVID, or any other medical condition
– I can’t guarantee specific improvements, or that you’ll notice a shift at all. Every nervous system responds differently
– This work is meant to complement your medical care, not replace it
– If you’re curious whether this might be a fit for your specific situation, feel free to schedule a free consultation.

If any of this feels familiar, I’d be glad to talk it through with you.

Book a free 15-minute consultation

Sources & Further Reading

Tracey, K.J. (2002). The inflammatory reflex. Nature, 420, 853–859.
Pavlov, V.A. & Tracey, K.J. (2005). The cholinergic anti-inflammatory pathway. Brain, Behavior, and Immunity, 19(6), 493–499.
“The cholinergic anti-inflammatory pathway in humans: State-of-the-art review and future directions.” Brain, Behavior, and Immunity (2022)
Milovanovic, B., et al. (2025). Comprehensive Assessment of Autonomic Nervous System Profiles in Postural Orthostatic Tachycardia Syndrome Among Syncope, Chronic Fatigue, and Post-COVID-19 Patients. Diagnostics. DOI: 10.3390/diagnostics15222824
Stewart, J.M. (2000). Autonomic nervous system dysfunction in adolescents with postural orthostatic tachycardia syndrome and chronic fatigue syndrome is characterized by attenuated vagal baroreflex and potentiated sympathetic vasomotion. Pediatric Research, 48(2), 218–226.
“Vagus Nerve Stimulation As A Novel Therapy For Postural Orthostatic Tachycardia Syndrome: A Systematic Review Of Emerging Clinical Evidence.” ScienceDirect (2026)
“Impaired Vagal Activity in Long-COVID-19 Patients.” PMC (heart rate variability study via 24-hour ECG monitoring)
Woo, M.S., et al. (2023). Vagus nerve inflammation contributes to dysautonomia in COVID-19. Acta Neuropathologica, 146, 387–394. DOI: 10.1007/s00401-023-02612-x
“Vagal cholinergic denervation of the gastric mucosa in Long-COVID-19: in vivo evidence of structural autonomic dysfunction.” ScienceDirect (2026)
Porges, S.W., et al. (2013, 2014). Foundational SSP/Listening Project Protocol research on auditory hypersensitivity in autism. Frontiers in Pediatrics.
Kawai, H., et al. (2023). Initial Outcomes of the Safe and Sound Protocol on Patients with Adult Autism Spectrum Disorder: Exploratory Pilot Study. International Journal of Environmental Research and Public Health. DOI: 10.3390/ijerph20064862

This article reflects publicly available research as of 2026 and is intended for general education. It is not medical advice and should not replace guidance from your physician or care team.