In Good Health

Your lymphocyte count on a CBC may look like one simple number, but it represents an entire adaptive immune army: B cells, helper T cells, cytotoxic T cells, regulatory T cells, and memory T cells.

In this episode, Stacy explains how the adaptive immune system differs from the innate immune system, why lymphocytes matter for immune memory, how chronic stress, poor sleep, repeated infections, aging, and elevated cortisol can affect adaptive immune resilience, and how to interpret lymphocyte patterns in context with neutrophils and monocytes.

You’ll also learn how CBC patterns like a high neutrophil-to-lymphocyte ratio and a low lymphocyte-to-monocyte ratio can help guide the next clinical questions.

Access the free Complete Blood Count Immunology Analysis Tool and Ratio Calculator in the show notes.

Access the CBC Systems Immunology Reference Guide and ratio calculator here: ⁠⁠CBC Immunology Systems Tool⁠⁠

Stacy Seslowsky, RD, LDN, MS is now accepting new patients. Stacy Seslowsky offers several educational opportunities for practitioners including a course called, "Immunology For Dietitians & Nutritionists." Become a master of immunology in 8-weeks and transform the way you care for patients. This is the only program of its kind specifically designed to empower dietitians and nutritionists to analyze, understand, and care for patients on an entirely different immunological level. You may also choose from several classes such as methylation, weight loss resistance, neurotransmitter function and imbalance, and more as part of the Precision Health Architect Series. Click ⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠here⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠ to learn more. Website: ⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠HealFromFood.com⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠, Email: [email protected], Social: @HealFromFood

Cortisol gets blamed for everything from weight gain to burnout, but the real story is far more interesting. In this episode, we break down why cortisol is actually a metabolic powerhouse and an anti-inflammatory ally, not just a stress hormone to suppress. You'll learn how to spot chronic cortisol dysregulation directly on a CBC report using the neutrophil to lymphocyte ratio, why morning light exposure might be the simplest tool in your clinical toolkit, and the surprising connection between serotonin and your patient's ability to get out of bed feeling alert. If you've ever told a patient to just lower their cortisol, this episode will change how you think about that advice completely.

Access the CBC Systems Immunology Reference Guide and ratio calculator here: ⁠CBC Immunology Systems Tool⁠

Stacy Seslowsky, RD, LDN, MS is now accepting new patients. Stacy Seslowsky offers several educational opportunities for practitioners including a course called, "Immunology For Dietitians & Nutritionists." Become a master of immunology in 8-weeks and transform the way you care for patients. This is the only program of its kind specifically designed to empower dietitians and nutritionists to analyze, understand, and care for patients on an entirely different immunological level. You may also choose from several classes such as methylation, weight loss resistance, neurotransmitter function and imbalance, and more as part of the Precision Health Architect Series. Click ⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠here⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠ to learn more. Website: ⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠HealFromFood.com⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠, Email: [email protected], Social: @HealFromFood

In this episode, Stacy explains the connection between the immune system, nervous system, and endocrine system through the lens of psychoneuroimmunology. You’ll learn how chronic stress impacts cortisol signaling, sympathetic activation, vagal tone, inflammation, histamine symptoms, hormones, and CBC patterns like NLR and LMR.

If you work with clients dealing with chronic inflammation, histamine intolerance, hormone symptoms, recurring infections, or autoimmune tendencies, this episode gives you a clearer framework for connecting stress physiology to immune function.

Access the CBC Systems Immunology Reference Guide and ratio calculator here: CBC Immunology Systems Tool

Stacy Seslowsky, RD, LDN, MS is now accepting new patients. Stacy Seslowsky offers several educational opportunities for practitioners including a course called, "Immunology For Dietitians & Nutritionists." Become a master of immunology in 8-weeks and transform the way you care for patients. This is the only program of its kind specifically designed to empower dietitians and nutritionists to analyze, understand, and care for patients on an entirely different immunological level. You may also choose from several classes such as methylation, weight loss resistance, neurotransmitter function and imbalance, and more as part of the Precision Health Architect Series. Click ⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠here⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠ to learn more. Website: ⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠HealFromFood.com⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠, Email: [email protected], Social: @HealFromFood

Why do some patients seem to react to everything? In this episode of In Good Health, I break down the immunology behind histamine overload, mast cell reactivity, chronic congestion, hives, flushing, gut permeability, and why these symptoms are often more connected than they appear. We’ll also cover how to use the CBC more strategically by looking at eosinophils, basophils, and key ratios like neutrophil-to-lymphocyte and lymphocyte-to-monocyte to guide root-cause thinking and next steps.

Register Here For Immunology Course. Class Starts May 10th, 2026

Click Here for CBC Analysis Tool

Stacy Seslowsky, RD, LDN, MS is now accepting new patients. Stacy Seslowsky offers several educational opportunities for practitioners including a course called, "Immunology For Dietitians & Nutritionists." Become a master of immunology in 8-weeks and transform the way you care for patients. This is the only program of its kind specifically designed to empower dietitians and nutritionists to analyze, understand, and care for patients on an entirely different immunological level, click ⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠here⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠ to learn more. Website: ⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠HealFromFood.com⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠, Email: [email protected], Social: @HealFromFood

In this episode of In Good Health, we break down the innate immune system through the lens of a complete blood count (CBC), one of the most underutilized clinical tools in practice.

You’ll learn how to interpret key immune cells including neutrophils, monocytes, eosinophils, basophils, and more, not just individually, but as patterns that reveal what the immune system is actually doing.

We also connect immune activity to:

• Chronic stress and cortisol
• Oxidative stress and mitochondrial dysfunction
• Allergies, histamine, and hypersensitivity
• Autoimmunity (including early Th17 connections)
• Cancer and viral surveillance via natural killer cells

This episode is especially helpful for practitioners, students, and curious learners who want to better understand CBC patterns, immune balance, and how chronic inflammation can develop from upstream cellular dysfunction.

⁠Click here to Access the CBC Reference Guide⁠

Stacy Seslowsky, RD, LDN, MS is now accepting new patients. Stacy Seslowsky offers several educational opportunities for practitioners including a course called, "Immunology For Dietitians & Nutritionists." Become a master of immunology in 8-weeks and transform the way you care for patients. This is the only program of its kind specifically designed to empower dietitians and nutritionists to analyze, understand, and care for patients on an entirely different immunological level, click ⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠here⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠ to learn more. Website: ⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠HealFromFood.com⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠, Email: [email protected], Social: @HealFromFood

In this episode, I explain how inflammation progresses after NF-kappa B signaling increases inflammatory cytokines like IL-6, TNF-alpha, and IL-1 beta. I break down the differences between the innate and adaptive immune system. You will learn how cells like neutrophils, monocytes, eosinophils, basophils, macrophages, dendritic cells act as the first responders, and how antigen presentation bridges into the adaptive immune response, and how immune memory is formed.

This episode is especially helpful for practitioners, students, and curious learners who want to better understand CBC patterns, immune balance, and how chronic inflammation can develop from upstream cellular dysfunction.

Click here to Download the CBC Reference Guide

Stacy Seslowsky, RD, LDN, MS is now accepting new patients. Stacy Seslowsky offers several educational opportunities for practitioners including a course called, "Immunology For Dietitians & Nutritionists." Become a master of immunology in 8-weeks and transform the way you care for patients. This is the only program of its kind specifically designed to empower dietitians and nutritionists to analyze, understand, and care for patients on an entirely different immunological level, click ⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠here⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠ to learn more. Website: ⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠HealFromFood.com⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠, Email: [email protected], Social: @HealFromFood

Heart disease may not begin with cholesterol, but with dysfunction at the cellular level. In this episode, we explore how mitochondrial dysfunction drives oxidative stress, immune activation, and the earliest stages of plaque formation in the arterial wall. Understanding this sequence shifts our focus from symptom management to identifying and addressing root cause.

Stacy Seslowsky, RD, LDN, MS is now accepting new patients. Stacy Seslowsky offers several educational opportunities for practitioners including a course called, "Immunology For Dietitians & Nutritionists." Become a master of immunology in 8-weeks and transform the way you care for patients. This is the only program of its kind specifically designed to empower dietitians and nutritionists to analyze, understand, and care for patients on an entirely different immunological level, click ⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠here⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠ to learn more. Website: ⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠HealFromFood.com⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠, Email: [email protected], Social: @HealFromFood

Mitochondrial dysfunction is a key driver of fatigue, brain fog, and chronic symptoms even when blood work appears normal. In this episode, we explore the root causes of mitochondrial dysfunction, including nutrient deficiencies, low oxygen, toxins, chronic immune activation, and lifestyle stress. Learn how these factors contribute to inflammation at the cellular level and how identifying the underlying cause can help restore optimal health.

Stacy Seslowsky, RD, LDN, MS is now accepting new patients. Stacy Seslowsky offers several educational opportunities for practitioners including a course called, "Immunology For Dietitians & Nutritionists." Become a master of immunology in 8-weeks and transform the way you care for patients. This is the only program of its kind specifically designed to empower dietitians and nutritionists to analyze, understand, and care for patients on an entirely different immunological level, click ⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠here⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠ to learn more. Website: ⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠HealFromFood.com⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠, Email: [email protected], Social: @HealFromFood

By identifying all the various pathways that take place in the mitochondria, we can better understand the signs and symptoms a person might experience if they had mitochondrial dysfunction within the specific tissues and organs wherein the mitochondria exists. As practitioners, we can assess and address this cellular dysfunction before chronic imbalance leads to a diagnosable disease.

Stacy Seslowsky, RD, LDN, MS is now accepting new patients. Stacy Seslowsky offers several educational opportunities for practitioners including a course called, "Immunology For Dietitians & Nutritionists." Become a master of immunology in 8-weeks and transform the way you care for patients. This is the only program of its kind specifically designed to empower dietitians and nutritionists to analyze, understand, and care for patients on an entirely different immunological level, click ⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠here⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠ to learn more. Website: ⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠HealFromFood.com⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠, Email: [email protected], Social: @HealFromFood

In this episode of In Good Health, Stacy Seslowsky, RD, LDN, MS explores how inflammation and immune activation can begin in the mitochondria. When the electron transport chain releases reactive oxygen species (ROS), it can activate key proteins and transcription factors that signal the immune system. While low levels of ROS are essential for cellular health, chronic overproduction leads to oxidative stress and immune dysregulation. By identifying early signs of mitochondrial dysfunction, practitioners can restore balance, reduce inflammation, and support optimal mitochondrial and immune system health. Stay tuned for a series of episodes on mitochondrial health as we further explore relevant clinical applications.

Stacy Seslowsky, RD, LDN, MS is now accepting new patients. Stacy Seslowsky teaches Immunology for Dietitians & Nutritionists. Become a master of immunology in 8-weeks and transform the way you care for patients. This is the only program of its kind specifically designed to empower dietitians and nutritionists to analyze, understand, and care for patients on an entirely different immunological level, click ⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠here⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠ to learn more. Website: ⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠HealFromFood.com⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠, Email: [email protected], Social: @HealFromFood