Insights

Five Years After COVID Changed Everything: What We Now Understand About the Brain, the Immune System, and Why So Many People Never Fully Recovered

Five years after the COVID-19 pandemic reshaped global health, the medical community is still uncovering how the virus altered the relationship between the brain and immune system. While many recovered quickly, a significant number of people developed lingering symptoms such as brain fog, fatigue, autonomic dysfunction, and chronic inflammation. Emerging research suggests that COVID was not simply a respiratory infection—it disrupted immune signaling, brain inflammation pathways, and the protective barriers that regulate communication between the body and the nervous system. These disruptions help explain why some individuals never fully returned to baseline health and why symptoms can persist for months or even years. This article explores what clinicians and researchers now understand about post-COVID immune dysfunction, neurological symptoms, and why a growing number of patients require a more integrated brain-immune recovery approach.

The Injury Nobody’s Measuring

Most people are told to rest after a brain injury and wait for the fog to lift. But for the patients still struggling months or years later, rest isn't enough — and Dr. Justin Dearing explains why. In this article, Dr. Dearing reframes brain injury as a systems-level autonomic injury that cascades across blood flow, heart rate, digestion, stress physiology, and cognitive function all at once. Drawing on The Dearing Clinic's multi-omics diagnostic approach — including qEEG brain mapping, eye movement assessment, autonomic stress testing, gut diagnostics, and more — he outlines why passive recovery fails so many patients and what active, measured, sequential intervention actually looks like. At the center of it all is a compelling case study: a former professional football player initially labeled with early-onset dementia whose cognitive decline turned out to be multi-system dysregulation — measurable, correctable, and ultimately reversible. If you or someone you love is still symptomatic after a brain injury and has been told their imaging looks fine, this is the article that reframes everything.

Your 40s Determine Your 70s: The Decade That Decides Everything

Your 40s aren't the beginning of the end — they're the most important decade for determining the quality of your life at 70 and beyond. Dr. Justin Dearing breaks down why the signals your body is sending right now matter more than you think, and what most doctors are missing. If you've been told you're "fine" but don't feel fine, this is worth your next 10 minutes.

The Rhythm Your Immune System Needs and What Happens When Your Gut Loses It

Explore how a balanced gut-brain-immune rhythm is foundational to wellness — and what happens when it’s disrupted. In this article from The Dearing Clinic, Dr. Justin Dearing explains that your immune system follows a daily rhythm governed by the autonomic nervous system, and when that rhythm falls out of balance, symptoms like food sensitivities, brain fog, chronic fatigue, and heightened immune reactivity often emerge. Rather than viewing these as separate issues, he shows how a breakdown in the gut-brain-immune axis creates a self-reinforcing cycle of inflammation, nervous system hypervigilance, and microbiome imbalance — and why addressing the underlying mechanisms, not just symptoms, is key to lasting health.

The 7-Day Neuro-Metabolic Breathing Reset: Why You'll Feel Different Before You Understand Why

Most adults breathe 16-20 times per minute without realizing that anything over 12-14 breaths per minute keeps their nervous system in chronic stress mode. This subtle hyperventilation blocks oxygen delivery, depletes dopamine, drives inflammation, and prevents other health interventions from working—no matter how perfectly you're doing everything else. This 7-day protocol teaches you the breathing mechanics your body was designed to use, with measurable changes in HRV, sleep quality, and nervous system function. You'll feel the difference before you understand the neuroscience behind why it works.

Monitoring What Matters: The Case for Neuro-Metabolic Surveillance in Dementia Prevention

Dementia prevention begins long before memory symptoms appear. By understanding how metabolic health and brain function interact, neuro-metabolic surveillance offers a proactive framework for identifying imbalances early and supporting healthy cognitive aging.

Vitamin C: The Regenerative Foundation Functional Medicine Forgot

Vitamin C is not a supplement — it’s the infrastructure your body relies on to repair, regenerate, and maintain itself. From collagen synthesis and vascular integrity to mitochondrial protection and immune regulation, every regenerative process depends on adequate Vitamin C availability. At The Dearing Clinic, we’ve seen firsthand how high-dose intravenous Vitamin C transforms outcomes when used to prepare the body for regenerative therapies. This article explores why oral supplementation falls short, why formulation matters, and how optimizing the body’s terrain changes everything about healing, performance, and longevity.

Restoring Nervous System Rhythm: How Structure, Rhythm, and Precision Rebuild Brain–Body Communication

Feeling wired but exhausted? Your busy life may be quietly disrupting your brain-body connection. Learn how daily rhythms, outdoor movement, and targeted clinical interventions like ISF neurofeedback and structural therapy can restore nervous system balance, reduce pain, and improve sleep, focus, and energy.

The Calibration Crisis: Why Modern Life Is Quietly Breaking Your Body’s Operating System

Discover how constant mental stress and lack of physical recalibration are disconnecting your brain and body. Learn why your nervous system is overstressed and how to restore balance.

The Oxygen Resolution: Fix This One Thing Before Your Next Goal

January doesn’t fail because of a lack of motivation—it fails because the body hasn’t recovered at a cellular level. This article explores why energy crashes, brain fog, and burnout persist even when labs look “normal,” and why oxygen utilization efficiency is the missing metric most people never measure. By examining how the brain, mitochondria, and nervous system use oxygen to produce energy, it reveals why pushing harder often worsens depletion—and how measuring and restoring metabolic capacity creates real, sustainable recovery.

Where Gratitude Lives in the Brain: How Simple Practices Retrain Your Nervous System

Gratitude isn’t just a mindset—it’s a practice that rewires the brain and trains the nervous system to respond to stress with calm and clarity. By engaging the salience network and the insula, simple, consistent, sensory-based gratitude practices help the brain notice safety, strengthen emotional regulation, and support restorative sleep. Over time, these small practices shift the brain’s default settings, allowing for greater focus, connection, and well-being.

When Energy Stops Moving: Why Midlife Fatigue, Hormone Decline, and Brain Fog Are Problems of Flow, Not Failure

Midlife fatigue, brain fog, and hormone changes aren’t signs of failure - they’re signals that the rhythm between stress and recovery has been lost. Energy, metabolism, and mental clarity rely on flow: the movement of oxygen, nutrients, and waste through the body and brain. When stress isn’t paired with recovery, circulation slows, hormones respond less effectively, and the brain struggles to clear metabolic by-products. Sustainable energy comes not from pushing harder, but from restoring flow, contrast, and balance, allowing the body to adapt, recover, and thrive naturally.

Midlife Burnout in Women: How Gut Health, Hormone Metabolism, and Cellular Energy Drive Fatigue, Weight Changes, and Mood Shifts

Many midlife women struggle with fatigue, weight resistance, mood swings, and disrupted sleep. Discover how changes in the gut microbiome, hormone metabolism, detox pathways, and cellular energy create midlife burnout and why microbiome testing, Hormone Zoomer analysis, and OAT testing provide answers traditional labs miss.

The Cellular Foundation of Immunity: Integrative Approaches for Mitochondrial Support

Discover the powerful benefits of ozonated products in everyday wellness. From nourishing ozonated oils to refreshing oral-care formulas, soothing topical applications, and easy-to-use soaps and suppositories—each product is designed to support skin health, reduce inflammation, promote healing, and enhance overall immunity. Learn how these natural, oxygen-rich solutions can elevate your self-care routine and help you feel your best from the inside out.

Balance and Brain Development: How Dual-Task Play Builds Focus, Coordination, and Resilience in Children

Strengthen your child’s focus, coordination, and emotional resilience through balance training and dual-task play. Learn how movement builds the developing brain.