Onion health benefits may be more powerful than you think.

In this episode of The Exam Room, Dr. Hana Kahleova joins Chuck Carroll to break down the science behind onion health benefits and explains how this humble vegetable may protect your heart, improve blood sugar, reduce liver fat, and even support longevity.

Here's what the science says about onion health benefits:

🧅 Red onions may reduce liver fat by more than 16% in just 12 weeks
🧅 Onions can improve insulin sensitivity and lower post-meal blood sugar
🧅 Quercetin in onions may reduce inflammation and oxidative stress
🧅 Onion compounds help support nitric oxide and healthy blood flow
🧅 Higher intake of onions and garlic is linked to lower cardiovascular and colon cancer risk

Dr. Kahleova explains how onions work inside the body — from protecting your arteries to supporting metabolic health — and why frequency matters more than eating large amounts at once.

Whether you love onions or you're like me and pick them off your plate, this episode will change how you see their health potential.

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The Physicians Committee is dedicated to saving lives through plant-based diets and ethical and effective scientific research. We combine the clout and expertise of more than 17,000 physicians with the dedicated actions of more than 175,000 members across the United States and around the world.

Fiber may be the single most powerful nutrient for improving gut health — yet most people aren't getting nearly enough of it.

Enter Fibermaxxing.

On this episode of The Exam Room Podcast, Chuck Carroll sits down with gastroenterologist and bestselling author Dr. Will Bulsiewicz to break down the science of how fiber transforms the gut microbiome and why it may be one of the most powerful tools we have for preventing chronic disease.

But this conversation goes far beyond the basics.

Dr. B explains how fiber feeds beneficial gut bacteria, why microbial diversity matters for long-term health, and how the metabolites produced by your microbiome influence inflammation, metabolism, immunity, and even brain function.

You'll also learn why short-chain fatty acids like butyrate are so important for colon health, how the gut barrier protects the body from disease, and what happens when the microbiome is starved of fiber.

Most importantly, Dr. B explains exactly how to start fibermaxxing safely and effectively — including how to increase fiber intake without uncomfortable bloating and which foods are best for rebuilding a healthy microbiome.

Whether you're trying to improve digestion, reduce disease risk, or optimize your microbiome, this episode will give you the science-backed strategies to start today.

In this episode you'll learn:

• What fibermaxxing is and why it's gaining attention
• How fiber feeds the gut microbiome
• Why microbial diversity is critical for health
• The role of short-chain fatty acids like butyrate
• How fiber strengthens the gut barrier
• Why fiber intake is linked to lower risk of heart disease, cancer, and diabetes
• How to increase fiber safely without digestive discomfort
• The best foods for rebuilding your microbiome

Dr. Bulsiewicz also shares practical strategies for improving digestion and explains why your gut microbiome may be one of the most important predictors of long-term health.

If you're ready to take your gut health to the next level, this episode is packed with insights you won't want to miss.

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The Physicians Committee is dedicated to saving lives through plant-based diets and ethical and effective scientific research. We combine the clout and expertise of more than 17,000 physicians with the dedicated actions of more than 175,000 members across the United States and around the world.

Constipation isn't just an adult problem — millions of kids struggle with it too.

On this episode of The Exam Room Podcast, Chuck Carroll is joined by Dr. Iris Wang, a gastroenterologist at the Mayo Clinic and the author of the children's book Boo Can't Poo.

Dr. Wang explains why constipation happens in children, how diet and lifestyle affect digestion, and what parents can do to help their kids develop healthy gut habits early in life.

🧠 You'll learn:

• How common constipation is in kids
• How fiber supports a healthy gut microbiome
• Why hydration is essential for digestion
• The surprising role of the pelvic floor in bowel movements
• Practical tips to help picky eaters get more fiber
• How parents can talk about poop without embarrassment

Dr. Wang also shares why breaking the "poo taboo" is so important for long-term health.

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- About Us -
The Physicians Committee is dedicated to saving lives through plant-based diets and ethical and effective scientific research. We combine the clout and expertise of more than 17,000 physicians with the dedicated actions of more than 175,000 members across the United States and around the world.