Gut health, explained properly.
Plain-language answers to the questions people actually ask us, written by our team and reviewed by our Science team of researchers and dietitians.
Every article is
- Backed by the current science
- Reviewed by our Science Team
- Updated when the research moves
60 Billion vs. 100 Billion Probiotic: Which Is Right for You?
Comparing a 60 billion vs 100 billion probiotic? Here's what the CFU number actually means and how to pick the right one for your gut.
Reviewed by
Hayley Miller, MS, RDN, LD, Physician's Choice Science Team
7 min read
Best Supplements To Take on Your GLP-1 Journey
Eating less on a GLP-1 medication changes what your gut and body need. Here are the supplements worth considering on your GLP-1 journey.
Reviewed by
Hayley Miller, MS, RDN, LD, Physician's Choice Science Team
7 min read
Probiotics for Traveler's Diarrhea: How To Support Your Gut on the Road
Learn what probiotics can and can't do for traveler’s diarrhea, plus practical ways to support gut health while traveling.
Reviewed by
Hayley Miller, MS, RDN, LD, Physician's Choice Science Team
7 min read
6 Signs You Need a Probiotic
Bloating, irregularity, and a recent round of antibiotics can all be signs that you need a probiotic. Here's how to tell if your gut needs backup.
Reviewed by
Hayley Miller, MS, RDN, LD, Physician's Choice Science Team
7 min read
Digestive Enzymes for Bloating After Eating
Learn how digestive enzymes work, when they may support digestion, and what to look for in enzymes for bloating after meals.
Reviewed by
Hayley Miller, MS, RDN, LD, Physician's Choice Science Team
7 min read
Taking Fiber for Gut Health: Why Fiber Has Become the New Protein
Fiber for gut health is having its own protein-era moment. Here's what fiber actually does in your gut and how much you really need.
Reviewed by
Hayley Miller, MS, RDN, LD, Physician's Choice Science Team
7 min read
Probiotics for Women Over 50: What Changes and What To Look For
Learn what changes after 50 and what to look for in probiotics for women over 50, including strains, quality, and daily gut support.
Reviewed by
Hayley Miller, MS, RDN, LD, Physician's Choice Science Team
7 min read
What Is Leaky Gut and Can Probiotics Help With Discomfort
Leaky gut refers to increased intestinal permeability. Learn what it means and how probiotics can support digestive comfort as part of a healthy routine.
Reviewed by
Hayley Miller, MS, RDN, LD, Physician's Choice Science Team
5 min read
Gut Health on GLP-1: How to Support Digestion While on a GLP-1 Journey
Written by: Marci Clow, MS, RDN Reviewed by: Hayley Miller, MS, RDN, LD, Physicians Choice Science Team Digestion is often...
Reviewed by
Hayley Miller, MS, RDN, LD, Physicians Choice Science Team
4 min read
Building a Supplement Stack To Support Weight Management
Discover how Thin 30 Probiotic supports weight management and pairs with fiber for fullness, when combined with a healthy diet and exercise.
Reviewed by
Hayley Miller, MS, RDN, LD, Physician's Choice Science Team
5 min read
Probiotics vs. Digestive Enzymes: What's the Difference and Do You Need Both?
Probiotics support your gut microbiome while digestive enzymes break down food. Learn how they differ, whether you need both, and how to choose.
Reviewed by
Hayley Miller, MS, RDN, LD, Physician's Choice Science Team
5 min read
What Are CFUs in Probiotics, and How Many Do You Really Need?
Learn what CFUs mean in probiotics and why strains, product quality, formulation, and CFU count can help you choose the right probiotic for your wellness goals.
Reviewed by
Hayley Miller, MS, RDN, LD, Physician's Choice Science Team
10 min read
What Happens When You Take Digestive Enzymes
Curious about what happens when you take digestive enzymes? Follow them through your gut, see how each enzyme works, and learn what you might notice.
Reviewed by
Hayley Miller, MS, RDN, LD, Physician's Choice Science Team
12 min read
Fiber on Your GLP-1 Journey: Why It Matters and How to Get Enough
Fiber matters on a GLP-1 journey. Discover how much you need daily, the best fiber-rich foods, and tips to get enough when you're eating less.
Reviewed by
Hayley Miller, MS, RDN, LD, Physician's Choice Science Team
6 min read
What Causes Bloating and What You Can Do About It
Bloating got you unbuttoning your pants? Learn what causes it and simple habits, foods, and supplements that can help you beat the bloat and feel better.
Reviewed by
Hayley Miller, MS, RDN, LD, Physician's Choice Science Team
10 min read
Using Probiotics for Bloating: Can They Help Your Microbiome?
Certain probiotic strains may support microbiome balance associated with reduced bloating. Learn how probiotics work and which formulas to get.
Reviewed by
Hayley Miller, MS, RDN, LD, Physician's Choice Science Team
3 min read
What Does CFU Mean? Understanding the Difference Between CFU and AFU
CFU and AFU measure probiotic viability differently. Learn what each means, how TFU fits in, and how to read a probiotic label.
Reviewed by
Hayley Miller, MS, RDN, LD, Physician's Choice Science Team
3 min read
Does Fiber Keep You Full? Using Fiber Supplements for Digestive Comfort
Soluble fiber supports feelings of fullness by slowing digestion. Learn how fiber works, what the research says, and how fiber supplements can help.
Reviewed by
Hayley Miller, MS, RDN, LD, Physician's Choice Science Team
5 min read
Why Does Hot Weather Upset Your Stomach? Beat the Summer Heat
Heat can disrupt digestion by affecting blood flow and hydration. Learn why it happens and practical steps to support your gut in summer.
Reviewed by
Hayley Miller, MS, RDN, LD, Physician's Choice Science Team
5 min read
How Does the Gut-Brain Connection Work and What Can You Do To Support It?
Learn how the gut-brain axis works, what disrupts it, and what steps may support it, including diet, lifestyle, and probiotic supplementation.
Reviewed by
Hayley Miller, MS, RDN, LD, Physician's Choice Science Team
5 min read
Soluble vs. Insoluble Fiber: Why Soluble Fiber Matters for Gut Health and Delivers
Learn the difference between soluble vs. insoluble fiber, why soluble fiber matters for gut health, and how supplements can help close the fiber gap.
Reviewed by
Hayley Miller, MS, RDN, LD, Physician's Choice Science Team
7 min read
Single-Strain vs. Multi-Strain Probiotics: Which One Is Actually Better?
Choosing between a single-strain and multi-strain probiotic? Learn differences, potential benefits, and how to find the right fit for your goals.
Reviewed by
Hayley Miller, MS, RDN, LD, Physician's Choice Science Team
5 min read
Can You Take Probiotics With Antibiotics? What the Research Actually Says
Key Takeaways Probiotics are generally considered safe to take alongside antibiotics, but timing matters. Research has examined how probiotics may...
Reviewed by
Hayley Miller, MS, RDN, LD, Physician's Choice Science Team
5 min read
Fiber 101: What Is It and Why Is It Important?
What is fiber, and why does it matter? Let's take a closer look at why your body needs it and simple ways to get more of it every day.
Reviewed by
Hayley Miller, MS, RDN, LD, Physician's Choice Science Team
7 min read
Digestive Enzymes 101: What They Are and Why They Matter?
What are digestive enzymes? Learn how they break down carbs, proteins, and fats to support nutrient absorption, digestive comfort, and help ease bloating
Reviewed by
Hayley Miller, MS, RDN, LD, Physician's Choice Science Team
10 min read
Do Fiber Gummies Work and How Do They Compare to Fiber Powder?
Do fiber gummies work? Learn how they compare to fiber powder, when gummies make sense, and what to look for in a fiber supplement.
Reviewed by
Hayley Miller, MS, RDN, LD, Physician's Choice Science Team
5 min read
What Are Proteolytic Enzymes and What Do They Do for Your Gut and Body?
Proteolytic enzymes break down proteins in your gut. Learn how they work, where they come from, and the 6 types found in digestive enzyme supplements.
Reviewed by
Hayley Miller, MS, RDN, LD, Physician's Choice Science Team
9 min read
Fiber Deficiency: Signs You’re Not Getting Enough and How To Fix It
Fiber deficiency can affect digestion, hunger, energy, and gut health. Learn the signs of low fiber intake and how to increase it gradually.
Reviewed by
Hayley Miller, MS, RDN, LD, Physician's Choice Science Team
9 min read
When To Take Digestive Enzymes: Does Before or After Meals Make a Difference?
Wondering when to take digestive enzymes? Learn why timing matters, whether to take them before or after meals, and how to use them.
Reviewed by
Hayley Miller, MS, RDN, LD, Physician's Choice Science Team
7 min read
Can Too Much Fiber Cause Constipation? What’s Actually Happening and How To Fix It
Can too much fiber cause constipation? Yes, sometimes. Learn why it happens, how water matters, and how to adjust your fiber intake.
Reviewed by
Hayley Miller, MS, RDN, LD, Physician's Choice Science Team
8 min read
What Are Prebiotics and Why Are They Different From Regular Fiber?
What are prebiotics? Learn how they differ from regular fiber, how they feed gut bacteria, and how to add them gradually.
Reviewed by
Hayley Miller, MS, RDN, LD, Physician's Choice Science Team
7 min read
How Long Does It Take for Probiotics To Work, and When Should You Take Them?
How long does it take for probiotics to work? Learn what to expect, when to take them, and how consistency affects gut support.
Reviewed by
Hayley Miller, MS, RDN, LD, Physician's Choice Science Team
7 min read
How To Tell if Probiotics Are Working: What To Look For in the First Few Weeks
Wondering how to tell if probiotics are working? Learn the signs to look for in the first few weeks and what probiotic results look like over time.
Reviewed by
Hayley Miller, MS, RDN, LD, Physician's Choice Science Team
6 min read
Probiotics 101: What Are Probiotics and Can They Support Your Health?
What are probiotics? They're live beneficial bacteria that support digestion, regularity, and immune health. Here's how they work and what to look for.
Reviewed by
Hayley Miller, MS, RDN, LD, Physician's Choice Science Team
9 min read
Fiber Supplements for Women: What To Look For at Every Life Stage
Looking for the best fiber supplement for women? Learn how fiber needs change through perimenopause, menopause, and beyond.
Reviewed by
Hayley Miller, MS, RDN, LD, Physician's Choice Science Team
7 min read
Gut Health 101: What Is Gut Health and Why Is It So Important?
What is gut health and why does it matter? Discover how your gut microbiome influences digestion, immune health, and more, plus easy ways to support it.
Reviewed by
Hayley Miller, MS, RDN, LD, Physician's Choice Science Team
10 min read
Do Probiotics Cause Gas? What's Normal and When To Adjust Your Dose
Key Takeaways Mild gas and bloating during the first week or two of taking a probiotic are common and usually...
Reviewed by
Hayley Miller, MS, RDN, LD, Physician's Choice Science Team
7 min read
Prebiotic vs. Probiotic: What's the Difference and Can Both Help Your Gut Health?
Key Takeaways Probiotics are beneficial bacteria that support the gut microbiome. Prebiotics are fibers that feed beneficial bacteria already living...
Reviewed by
Hayley Miller, MS, RDN, LD, Physician's Choice Science Team
6 min read