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Welcome to the blog of “The Digestion Coach,” Dr. Marcus Ettinger.

As a practicing doctor of 36+ years and GI health specialist, I have studied, written, and treated the human body for a long time. I created this blog to provide easy-to-understand information on complex topics and to help anchor everything I study. I hope the information on my blog increases your understanding of the body, disease, and health.

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Gut-Mitochondria-Brain Axis

The Gut-Mitochondria-Brain Axis

I propose that the gut-brain and gut-mitochondria axes are not isolated systems but part of a deeply interconnected network, linked at the molecular level by microtubules, chemical messengers, and bioelectrical... Read More
  • April 26, 2025
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Indigo Novel UC Therapy

Indigo as a Novel UC Therapy: A Gut Health Breakthrough

Ulcerative colitis (UC), a chronic inflammatory bowel disease (IBD), affects millions, causing symptoms like abdominal pain and diarrhea. Current treatments, such as steroids and immunosuppressants, often face challenges like low... Read More
  • April 22, 2025
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Carbohydrate Maldigestion

Carbohydrate Maldigestion: Causes, Symptoms, and Solutions

Introduction: Could Carbohydrate Maldigestion Be Causing Your Gut Issues? If you’ve ever felt bloated, gassy, or had diarrhea after eating certain foods, you might be dealing with carbohydrate maldigestion. This... Read More
  • April 21, 2025
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Sauerkraut-Boosts-Gut-Health

Sauerkraut Boosts Gut Health

Sauerkraut Boosts Gut Health: A Tangy Superfood Win Picture a tangy, yummy food that acts like tiny heroes for your gut. Meet sauerkraut, a fermented cabbage dish loved for ages,... Read More
  • April 15, 2025
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SIBO-Symptoms-in-Women

Do SIBO Symptoms in Women Differ from Men?

Small Intestinal Bacterial Overgrowth, or SIBO, is a condition where excessive bacteria in the small intestine disrupt digestion, leading to uncomfortable SIBO symptoms in women and men, like bloating, abdominal... Read More
  • April 12, 2025
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Fructose-Intolerance-and-IBS

Fructose Intolerance and IBS Connection

Fructose Intolerance and The Underdiagnosed Connection Mistaken for IBS Table of Contents What is Fructose Intolerance? Symptoms of Fructose Intolerance Fructose Intolerance and Unexpected Weight Gain: The Link Fructose Intolerance... Read More
  • April 11, 2025
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Nitric Oxide Molecule and Beets

Nitric Oxide Activation For Biofilm Dispersal – A Novel Approach

Nitric Oxide: A Natural Way to Break Up Biofilms and Fight Infections Table of Contents Introduction Nitric Oxide from iNOS (Immune Response) Nitric Oxide from eNOS (Blood Flow) Sunlight and... Read More
  • April 11, 2025
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Healthy-Aging

Healthy Aging Odds Can be Boosted with Diet and Sunlight

Aging gracefully isn’t just luck—it’s a science. Recent research shows that your diet, sunlight exposure, and timing can boost your odds of healthy aging. Picture yourself past 70 with a... Read More
  • April 8, 2025
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