The Best and Worst Supplements for Gut Health (Ranked by a GI Doctor)

7 Gut Health Mistakes That Are Making You Sicker (Stop Doing These)

📌 Visit www.drmelona.com You are doing everything you think you are supposed to do for your gut. Your symptoms are still there. Your energy is still low. Nothing is sticking. The problem is probably not what you are doing. It is what you are doing wrong without realizing it. In this episode, I'm going to walk you through 7 gut health mistakes I see repeated across thousands of patients, why each one keeps you stuck, and exactly what to do instead. ⏱️ TIMESTAMPS  0:00 7 Gut Health Mistakes That Are Making You Sicker (Stop Doing These) 0:52 Mistake 1: Assuming your digestive symptoms are normal  2:07 Mistake 2: Self-treating with supplements instead of getting a diagnosis  3:37 Mistake 3: Delaying colorectal cancer screening  5:00 Mistake 4: Eating an extremely low fiber diet  7:03 Mistake 5: Relying on ultra processed foods as your dietary default  8:33 Mistake 6: Long-term acid medication without reassessment  9:56 Mistake 7: Ignoring the gut-brain connection  11:40 Tonight's action step: breathing before every meal ❓ QUESTIONS ANSWERED Q: Is daily bloating, reflux, or irregular bowel habits something to see a doctor about? A: Common does not mean normal. Digestive symptoms that persist for more than a few weeks are worth investigating, not panicking over. Ignoring them does not make the underlying problem go away. It gives it time to progress. Q: Why don't gut supplements fix the problem?  A: If you do not have a diagnosis, every supplement you take is a guess. Months of guessing is months of a real, treatable condition going unaddressed. Get the diagnosis first. Then the solution becomes much clearer. Q: How does stress cause digestive symptoms?  A: Your gut and brain are directly connected via the vagus nerve and the gut-brain axis. Chronic stress shifts your nervous system into survival mode, which increases acid production, changes motility, and raises gut sensitivity. You can optimize your diet perfectly and still have persistent symptoms if your nervous system is stuck in overdrive. 📱 RESOURCES Website: www.drmelona.com Books By Dr Mel Ona: https://drmelona.com/media/ Patient Resources: https://drmelona.com/patient-portal/ Unsedated Colonoscopy Video: https://www.youtube.com/watch?v=-Vz1IXF0rmo Instagram: https://www.instagram.com/drmelonagi Facebook: https://www.facebook.com/doctormelona 🔔 Subscribe for evidence-based digestive health, nutrition science, and disease prevention from a board-certified gastroenterologist. ABOUT DR. MEL ONA: I'm Dr. Mel Ona, a board-certified gastroenterologist with graduate training in nutritional biochemistry and metabolism. I founded Ohana Gastroenterology and have treated over 10,000 patients across nine years of clinical practice. My focus is evidence-based digestive health, nutrition science, and disease prevention. #GutHealth #Gastroenterologist #DigestiveHealth #GutMicrobiome #GIDoctor

The Complete Guide to Preventing Colon Cancer (From a Doctor Who's Seen It All)

📌 Visit www.drmelona.com Colorectal cancer is the second leading cause of cancer death in the United States. And it is one of the most preventable. That gap exists for one reason: most people never take the steps that could save their lives. In this episode, I'm going to walk you through the five pillars of colon cancer prevention. Screening. Fiber. Diet. Exercise. Metabolic health. Master these and you are doing more to protect yourself than the vast majority of people ever will. ⏱️ TIMESTAMPS 0:00 The preventable cancer most people never actually prevent 0:49 Pillar 1: Why colonoscopy is the only cancer test that actually prevents cancer 1:27 The polyp-to-cancer window and why the 10-15 year timeline is your opportunity 2:53 If you are 45 or older and have not been screened, this is the most important action step 3:15 Pillar 2: Fiber as your single most important dietary defense 4:37 Why most people eat half the recommended fiber (and how to change that) 5:25 Pillar 3: Reducing ultra-processed foods and processed meat 6:38 Pillar 4: Physical activity as independent cancer risk reduction (walking counts) 9:15 Pillar 5: Metabolic health and why excess body weight increases colorectal cancer risk 11:09 What to do tonight: 5 concrete action steps before you go to sleep ❓ QUESTIONS ANSWERED Q: What age should I start colorectal cancer screening? A: Current guidelines recommend screening starting at age 45 for average-risk individuals. If you have a family history of colon cancer or polyps, you may need to start earlier. Colonoscopy can prevent cancer outright by removing precancerous polyps during the procedure, before they ever have the chance to become malignant. Q: Does fiber actually reduce colon cancer risk? A: Yes. Higher fiber intake is consistently associated with lower colorectal cancer risk in large population studies. Fiber feeds beneficial gut bacteria, produces short-chain fatty acids that protect the colon lining, and helps regulate inflammation. Most people eat roughly half the recommended daily amount. Q: How does excess weight increase colon cancer risk? A: Excess body fat promotes chronic low-grade inflammation, elevates insulin levels, and creates a metabolic environment that favors cancer cell growth. Patients with metabolic syndrome and excess visceral fat have measurably higher rates of precancerous polyps. Managing weight through sustainable dietary changes and consistent activity is not just a fitness goal. It is a cancer prevention strategy. 📱 RESOURCES Website: www.drmelona.com Patient Portal: https://drmelona.com/patient-portal/ Unsedated Colonoscopy Video: https://www.youtube.com/watch?v=-Vz1IXF0rmo Instagram: https://www.instagram.com/polymathforever/ Facebook: https://www.facebook.com/doctormelona 🔔 Subscribe for evidence-based digestive health, nutrition science, and disease prevention from a board-certified gastroenterologist. ABOUT DR. MEL ONA: I'm Dr. Mel Ona, a board-certified gastroenterologist with graduate training in nutritional biochemistry and metabolism. I founded Ohana Gastroenterology and have treated over 10,000 patients across nine years of clinical practice. My focus is evidence-based digestive health, nutrition science, and disease prevention. #ColonCancerPrevention #Gastroenterologist #GutHealth #DigestiveHealth #ColonoscopyScreening

Gut Health Habits I Follow Every Day as a Gastroenterologist

📌 Visit www.drmelona.com I treat gut disease every single day. I have seen what happens when people ignore their digestive health for years. So what do I actually do to make sure I never become my own patient?  Seven habits. All daily. All simple. And the last one might surprise you. In this episode, I'm going to walk you through the seven daily habits I follow to protect my gut, my energy, and my long-term health. ⏱️ TIMESTAMPS 0:00 Why what a GI doctor does every day matters more than any gut health trend 0:46 Habit 1: Eating 30+ grams of fiber from diverse plant sources (and why variety beats volume) 2:05 How plant species count predicts microbiome diversity in practice 2:47 Habit 2: Making whole food the default, not a perfect diet 3:55 Habit 3: Stopping eating 3 hours before bed and how it fixed my reflux 4:44 Habit 4: Moving your body every single day (walking counts) 5:58 Habit 5: Protecting sleep and managing stress (the gut-brain connection most people miss) 7:10 Habit 6: Staying current on preventive screening (I filmed my own colonoscopies to prove the point) 9:26 Habit 7: Never stop learning and why an informed patient gets better outcomes 10:36 Which single habit to start with tonight ❓ QUESTIONS ANSWERED Q: What does a gastroenterologist actually eat to protect their gut? A: My diet centers on 30+ grams of diverse fiber from vegetables, fruits, legumes, whole grains, nuts, seeds, and spices daily, with a target of 25 or more different plant sources per week. Whole food is the default. Ultra-processed food is the deliberate exception. Q: Does stopping eating before bed actually reduce acid reflux? A: Yes. A three-hour gap between your last meal and bedtime gives your stomach time to empty and reduces nighttime reflux significantly. This single habit resolved my own reflux more effectively than any dietary change or supplement I have tested. Q: When should you get a colonoscopy? A: If you are 45 or older and have not had one, schedule it now. I get mine on schedule myself and filmed two of my own unsedated colonoscopies to show patients the procedure is manageable. Screening catches problems before they become crises. 📱 RESOURCES Website: www.drmelona.com Patient Portal: https://drmelona.com/patient-portal/ Unsedated Colonoscopy Video: https://www.youtube.com/watch?v=-Vz1IXF0rmo Instagram: https://www.instagram.com/polymathforever/ Facebook: https://www.facebook.com/doctormelona 🔔 Subscribe for evidence-based digestive health, nutrition science, and disease prevention from a board-certified gastroenterologist. ABOUT DR. MEL ONA: I'm Dr. Mel Ona, a board-certified gastroenterologist with graduate training in nutritional biochemistry and metabolism. I founded Ohana Gastroenterology and have treated over 10,000 patients across nine years of clinical practice. My focus is evidence-based digestive health, nutrition science, and disease prevention. #GutHealth #Gastroenterologist #DigestiveHealth #GutMicrobiome #NutritionScience

Your Most Embarrassing Gut Questions, Answered by a Gastroenterologist

📌 Visit www.drmelona.com There are questions about your gut you have never said out loud. You Googled them at 2 a.m. You almost brought them up at your last appointment and changed your mind. Today I am answering all of them. No judgment. No sugarcoating. Just straight answers from a board-certified GI doctor who has heard every question you think is too embarrassing to ask. In this episode, I'm going to answer the five gut health questions I hear most often behind closed doors, including the ones patients whisper and the ones that could actually save your life if you stop ignoring them. ⏱️ TIMESTAMPS 0:00 - A GI Doctor Answers the Questions Patients Are Afraid to Ask 0:41 - Why your digestion questions deserve real answers 1:08 - Q1: Is my poop normal? 2:50 - Q2: Do I need a colonoscopy if I feel fine? 5:10 - Q3: Why does stress destroy my stomach? 6:45 - Q4: Should I take a probiotic? 8:46 - Q5: How do I know if my symptoms are serious? 10:53 - What to do tonight about your gut health ❓ QUESTIONS ANSWERED Q: Is it normal to have a bowel movement three times a day or only three times a week? A: Both are within the normal range. What matters more than frequency is your personal baseline and whether something changes. If a shift persists for more than three to four weeks, bring it to your doctor. Q: Do I need a colonoscopy if I feel perfectly healthy? A: Yes. Colorectal cancer often produces no symptoms until it has reached an advanced stage. Colonoscopy does not just detect cancer, it prevents it by finding and removing precancerous polyps before they become dangerous. Screening is recommended starting at age 45 for average-risk individuals. Q: Can stress actually cause real digestive problems or is it all in my head? A: It is in your anatomy, not your head. Stress activates the fight-or-flight nervous system response, which diverts blood flow from digestion, changes gut motility, increases acid production, and makes the gut lining more sensitive. The result is real physical symptoms including bloating, cramping, reflux, and irregular bowel habits. 📱 RESOURCES Website: www.drmelona.com Patient Portal: https://drmelona.com/patient-portal/ Instagram: https://www.instagram.com/polymathforever/ Facebook: https://www.facebook.com/doctormelona 🔔 Subscribe for evidence-based digestive health, nutrition science, and disease prevention from a board-certified gastroenterologist. ABOUT DR. MEL ONA: I'm Dr. Mel Ona, a board-certified gastroenterologist with graduate training in nutritional biochemistry and metabolism. I founded Ohana Gastroenterology and have treated over 10,000 patients across nine years of clinical practice. My focus is evidence-based digestive health, nutrition science, and disease prevention. #GutHealth #Gastroenterologist #DigestiveHealth #ColonCancerPrevention #GIDoctor

I Lost Over 50 Pounds as a Doctor. Here's What It Taught Me About Gut Health.

📌 Looking to get into a new diet or need a Gastroenterologist? Visit: www.drmelona.com That gap between knowing and doing is where most people live. It's also where I lived for years. I was treating patients for the exact conditions I was at risk for. Fatty liver. GERD. Colorectal cancer risk from obesity. Every day I gave advice I was not following myself. Losing over 50 pounds changed that. And it changed the way I practice medicine. In this episode, I'm going to share the 5 lessons from my own transformation that changed how I treat every patient who walks into my clinic. ⏱️ TIMESTAMPS 0:00 The doctor who knew everything and still couldn't get healthy 1:05 Lesson 1: Knowing the science is not the same as living it 2:57 Lesson 2: Weight loss changed my gut before it changed my appearance 4:45 Lesson 3: The real barrier is not discipline, it's identity 6:28 Lesson 4: Why simplicity beats complexity every time 8:41 Lesson 5: Prevention is always easier than treatment 10:12 The one action to take starting tonight 11:29 Watch this video next ❓ QUESTIONS ANSWERED Can a doctor be overweight even if they fully understand the science? Yes. Knowledge without action changes nothing. I had the credentials to lecture on metabolism and weight loss, and still could not apply it to my own life until I made a deliberate decision to start. Does losing weight actually improve gut health, and how fast? It does, often before the scale moves much at all. Reducing excess body weight lowers abdominal pressure, decreases systemic inflammation, and can resolve reflux, improve digestion, and reverse early fatty liver disease. Why do most diets fail even when people know exactly what to do? The barrier is rarely information or willpower. It is identity. Lasting change happens when you decide that being healthy is who you are, not just something you are trying until life gets busy again. 📱 RESOURCES Website: www.drmelona.com Patient Portal: https://drmelona.com/patient-portal/ Instagram: https://www.instagram.com/polymathforever/ Facebook: https://www.facebook.com/doctormelona 🔔 Subscribe for evidence-based digestive health, nutrition science, and disease prevention from a board-certified gastroenterologist. ABOUT DR. MEL ONA:  I'm Dr. Mel Ona, a board-certified gastroenterologist with graduate training in nutritional biochemistry and metabolism. I founded Ohana Gastroenterology and have treated over 10,000 patients across nine years of clinical practice. My focus is evidence-based digestive health, nutrition science, and disease prevention. #GutHealth #Gastroenterologist #DigestiveHealth #PreventiveHealth #NutritionScience