Dr. Mark Stengler

This HERB Before Meals May Improve Your Digestion (Science-Backed)

78 views · 21h ago · 10:52

Bitter foods are essential for healthy digestion, yet they have largely disappeared from the modern diet. Learn how these compounds trigger natural digestive processes. Traditional healers long utilized bitter herbs to stimulate the digestive tract, but modern reliance on pharmaceuticals has pushed these natural aids aside.

Topics: The Forgotten Secret of Better Digestion · What Digestive Bitters Really Are · How Bitter Taste Receptors Work · How Bitters Prepare Your Body to Digest · The Vagus Nerve Connection · How Bitters Trigger Digestive Hormones

Taming Inflammation through Food Choices

78 views · 2d ago · 20:33

Chronic inflammation often starts in the gut, and the food on your plate may be feeding it every day. In this episode, Dr. Mark Stengler talks with naturopathic doctor Chris Meletis about how gut health, the microbiome, and inflammation connect to heart health, brain health, and healthy aging. They explain inflammaging, how functional stool tests and markers like butyrate help guide care, and why bowel movement quality matters.

Topics: Meet Dr. Chris Meletis, ND and the Microbiome · What Is Inflammaging? · How Gut Inflammation Starts and What Stool Tests Show · Inflammation, Blood Vessels, and Heart Health · Butyrate and Why Gut Health Drives Whole Body Health · Diet, the Bristol Stool Chart, and Mindful Eating

Why Your LDL Number Isn’t Enough (After 30 Years in Practice)

717 views · 1w ago · 18:37

A high LDL cholesterol number is not the full picture of your heart disease risk. In this video, I explain why cardiometabolic syndrome, insulin resistance, and small dense LDL particles matter more than one lab value, which tests actually clarify your real risk, and the diet, lifestyle, and evidence-based supplements I use with patients to support cardiovascular health.

Topics: Why One Cholesterol Number Is Not Enough · What Cholesterol Actually Does · How Insulin Resistance Changes Your Risk · The Lipid Pattern That Really Matters · Why ApoB and Particle Size Matter · Inflammation and Arterial Health

Exploring the Stress-Gut Connection: Strategies for Inner Harmony

237 views · 1w ago · 22:45

Learn more from Dr. Doni Wilson, including her book Master Your Stress, Reset Your Health Constant stress can quietly shut down your digestion, and your gut can send stress signals right back to your brain. In this episode, Dr. Mark Stengler talks with naturopathic doctor Doni Wilson about the stress-gut connection and how your adrenal glands and cortisol fit in.

Topics: Meet Dr. Doni Wilson, Naturopathic Doctor and Author · Psychoneuroimmunology and the Root Cause Approach · How Stress Affects Digestion and Leaky Gut · Adrenal Distress: What Your Adrenals and Cortisol Do · Testing Cortisol and Choosing the Right Herbs · The CARE Method and Stress Recovery Protocol

New Research on Hormone Therapy: What It Means for Heart Health

299 views · 2w ago · 8:28

A new study on hormone therapy is making headlines, but the real story is in the details. In this video, I break down why this research only tested synthetic and animal-derived hormones taken by mouth, how bioidentical and transdermal estrogen compare, and what the data actually show about LDL cholesterol, heart risk, and hormone replacement for women in perimenopause and menopause.

Topics: Is Estrogen Replacement a Problem · The New WHI Reanalysis Explained · Why the Hormones Used Matter · Oral vs Transdermal Estrogen Risks · Who Was Actually in the Study · Timing of Hormone Therapy and Heart Health

The Gut-Thyroid Connection

107 views · 2w ago · 19:26

If your thyroid labs look fine but you still feel exhausted, your gut may be part of the story. In this episode, Dr. Mark Stengler talks with his wife, naturopathic doctor Angela Stengler, NMD, MS, about how digestive health and thyroid function affect each other. They discuss constipation and fatigue with low thyroid, why a poorly working gut can limit thyroid medication absorption, and how SIBO, leaky gut, and Hashimoto’s thyroiditis fit in.

Topics: The Gut Thyroid Connection with Dr. Angela Stengler · Low Thyroid, Constipation, and Medication Absorption · Gut Testing: Stool Analysis and Leaky Gut · SIBO and Low Free T3 · Hashimoto’s Thyroiditis: Lifestyle and Key Nutrients · Acid Blockers, Probiotics, and Digestive Enzymes

The 5 WARNING SIGNS of B12 Deficiency You Shouldn’t Ignore

688 views · 3w ago · 8:32

B12 deficiency is one of the most commonly missed causes of fatigue, nerve problems, brain fog, and more. In this video, I walk through the 5 warning signs of B12 deficiency you should never ignore, why your diet alone may not be enough, which medications and conditions interfere with B12 absorption, and the best forms and tests to make sure your levels are where they need to be.

Topics: Could You Have a B12 Problem · Sign 1 Unusual Fatigue · Sign 2 Tingling or Numbness · Sign 3 Balance and Walking Problems · Sign 4 Memory and Concentration Changes · Sign 5 Sore or Swollen Tongue

Improving Gut Health for Weight Loss Success

81 views · 3w ago · 20:35

Losing weight can feel nearly impossible when your gut health is working against you. In this episode, Dr. Mark Stengler talks with registered nurse and nutrition coach Danna Demetre about how gut health and weight loss support each other, especially for women in midlife. She explains a simple 14-day elimination diet that starts with removing grains and added sugar, how to spot hidden food sensitivities, and why mindset matters for lasting results.

Topics: Meet Danna Demetre, RN · Gut Health and Weight Loss: Which Comes First? · Elimination Diet Basics: Removing Grains and Added Sugar · Mindset Shifts for Lasting Weight Loss · The 14 Day Jumpstart and Finding Food Sensitivities · Apple Cider Vinegar Cleansing Drink for Digestion

The Gut-Brain Connection: Nourishing Your Cognitive Health

87 views · 3w ago · 17:37

Your gut makes about 90 percent of your serotonin, so what you eat may shape how you think and feel. In this episode, Dr. Mark Stengler talks with pediatrician William Sears, MD, about the gut-brain connection and how the vagus nerve links your digestive system to brain health. They explain the role of the microbiome, why chewing longer improves digestion, and which smart foods, fermented foods, and smoothie ingredients support focus, mood, and memory at every age.

Topics: Meet William Sears, MD, Pediatrician and Author · The Head, Brain and Gut Brain Connection · Gut Health, Serotonin, and Mood · What Is the Microbiome? · Smart Foods for Brain Health · Why Chewing Longer Improves Digestion

Harnessing the Power of a Healthy Microbiome for Longevity

83 views · 3w ago · 18:15

Guest: Dr. Michael Murray

Could a simple nutrient deficiency be the reason your gut lining is breaking down? In this episode, Dr. Mark Stengler sits down with Dr. Michael Murray, ND, to explain how leaky gut syndrome, also called increased intestinal permeability, develops and which nutrients help support the gut lining.

Topics: Meet Dr. Michael Murray, the Voice of Natural Medicine · Why Gut Health Affects Your Whole Body · Is Leaky Gut Real? Increased Intestinal Permeability Explained · Best Nutrients for Leaky Gut: Zinc, Vitamin A, and Folic Acid · N-Acetyl Cysteine and L-Glutamine for Gut Lining Support · Low Stomach Acid and Digestive Enzymes

1 Cup of THIS Reduced Visceral Fat by 9% (Science-Backed)

1.6K views · 4w ago · 12:59

Visceral fat is one of the most dangerous types of body fat and is directly linked to insulin resistance, type 2 diabetes, fatty liver, and heart disease. In this video, I break down what visceral fat really is, how green tea catechins like EGCG may help reduce it by up to 9%, what the clinical research reveals, and how much green tea you actually need to see a benefit.

Topics: Why Visceral Fat Is So Dangerous · Different Types of Body Fat Explained · Why Visceral Fat Harms Metabolic Health · What Green Tea Catechins Do · Early Green Tea Metabolism Research · Green Tea and Visceral Fat Reduction

The Hidden Cancer Risk of Frequent Flying

1.4K views · 1mo ago · 12:53

Could frequent flying actually raise your risk of cancer? A major 2026 study published in JAMA Internal Medicine found that pilots and flight attendants have some of the highest rates of radiation-related cancer deaths of any profession.

Topics: The Hidden Cancer Risk of Flying · The 2026 JAMA Internal Medicine Study · What the Study Actually Found · Comparison Groups and Radiation Exposure · How Cosmic Radiation Affects the Body · Circadian Disruption and Cancer Risk

Can Diet Soda Really Cause Type 2 Diabetes? What New Research Shows

3.6K views · 1mo ago · 10:53

Are diet sodas actually raising your risk of type 2 diabetes? In this video, I break down a groundbreaking 2026 European study, along with major research from France and the United States, showing a surprising link between artificial sweeteners and diabetes risk. Learn how these sweeteners may affect your gut microbiome, insulin signaling, and metabolic health, and what to drink instead.

Topics: The Diet Soda Trade-Off · New 2026 Study on Diet Drinks · Common Artificial Sweeteners Explained · The 2023 French Diabetes Study · Additional Research From the US and Europe · How Sweeteners Affect the Gut Microbiome