Articles on gut health, digestion, the microbiome, probiotics and fiber from Dr. Don Colbert, MD.
Fiber and Your Gut Lining: What Hungry Gut Bacteria May Eat Next
New Princeton research in mice suggests that when gut bacteria run short on fiber, they may turn to your protective mucus lining for food. Here is what it means and how to feed your gut well.
Fiber for Knee Arthritis Pain? A Surprising Gut-Joint Link
A 2026 University of Nottingham trial found that a daily prebiotic fiber called inulin modestly eased knee arthritis pain and improved grip strength. Here is what it means for your gut and your joints.
Blueberries and Mood: What 2 Cups a Day Revealed in Seniors
A small new trial gave older adults about 2 cups of blueberries a day for 3 months. Dr. Colbert explains the early gut and mood clues, what the study did not prove, and how to enjoy berries wisely.
Gut Bacteria and Alzheimer’s: The Hidden Molecule Revealed
A new study links a molecule made by certain gut bacteria to faster cognitive decline. Dr. Colbert explains what it really means and the simple, faith-filled steps that support your gut and brain.
Late-Night Eating Linked to Up to 30% Higher Liver Disease Risk
A study of nearly 200,000 adults links eating after dinner or after bedtime to a 20% to 30% higher risk of liver disease. Here is what it means, and the simple evening habit worth trying.
High Fiber Diet: How Your Gut Bacteria Change the Calorie Math
On a fiber-rich, whole food diet, people in a controlled study absorbed about 116 fewer calories a day than on a Western diet, and they were not hungrier. Here is what that means for you.
Walking for Constipation: A 20-Minute Stroll May Wake Your Gut
A new Japanese study found bowel activity nearly doubled within two minutes of a comfortable 20-minute walk. Dr. Colbert explains what it means, what it does not prove, and simple gut habits to start today.
Coffee and Gut Health: Why Decaf Surprised the Scientists
A small Irish trial found that regular and decaf coffee both nudged specific gut bacteria and were linked to changes in stress, focus and memory. Dr. Colbert explains what it means for you.
10 Shocking Signs Your Body Is Begging for More Fiber
Dr. Colbert’s Nutrition & Wellness Guide 10 Shocking Signs Your Body is Begging for More Fiber Constipation is not the only clue that your fiber intake may be too low. Persistent hunger, unstable blood sugar, unhealthy cholesterol levels, digestive irregularity,…
Summer Brain Fog? It Could Be Your Gut — Here’s What Scripture & Science Say About It
If you find yourself feeling mentally sluggish during the summer months—struggling with memory, focus, or motivation—you’re not alone. Many of my patients describe what they call “summer brain fog.” And while you might blame it on the heat or disrupted…
