Blog

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.

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

Type 2 Diabetes and NAFLD Managed with Betaine and Lifestyle 

Living with type 2 diabetes (T2D) or nonalcoholic fatty liver disease (NAFLD) can feel overwhelming, but there’s hope in a simple, science-backed plan. Research shows that low levels of betaine—a... Read More

The Gut Axes: Resilience and Sunlight Microbiome Connection

The Gut Axes as Adaptive Conduits: A Bidirectional Network of Resilience and Sunlight Microbiome Connection Doing what I do as a decades-long practicing doctor and dedicated digestion coach, I often... Read More

Phenolic Glycosides for Gut Health

Phenolic glycosides for gut health are plant-derived compounds with a phenolic structure linked to a sugar group, offering significant benefits by reducing intestinal inflammation and enhancing resistance to pathogens. These... Read More

A diet rich in choline, carnitine, and tryptophan may increase cancer risk by producing trimethylamine n-oxide (TMAO) and indole-3-acetic Acid (IAA) metabolites.

Is There a Choline, Carnitine, Tryptophan Cancer Risk via Diet? Trimethylamine N-oxide (TMAO) and indole-3-acetic acid (IAA) are metabolites produced by gut microbiota from specific dietary precursors found in certain foods.... Read More

The Gut-Lung Connection: Lung Health via Gut Health

If you’re living with asthma or chronic obstructive pulmonary disease (COPD), or you’re an older adult worried about lung infections like pneumococcal pneumonia, your gut might hold a secret weapon... Read More

Gut Health and Parkinson’s: How Diet Can Help

The Gut-Brain Link: How Food Boosts Gut Health and Parkinson’s If you live with Parkinson’s disease, you know the shaky hands, stiff muscles, and slow moves. These come from brain... Read More

Nine Ways Our Microbiome and Bitcoin Are Alike

Nine Ways Our Microbiome Is Like Bitcoin As a Bitcoin enthusiast, doctor, and digestion coach, I got to thinking: What if the trillions of microbes in our gut ran their... Read More