Can You Eat Too Much Fiber?

Robin Berzin, MD

Fiber is one of the key macronutrients, along with fat and protein, that you should be getting at every meal. If you’re trying to eat healthy, maybe you’re consciously packing more into your diet. But is it possible to have too much fiber? And could it be the reason you have uncomfortable gastrointestinal symptoms?

It’s actually pretty hard to overdo it on fiber and most people aren’t eating enough. The average American eats 5 to 10 grams of fiber, but you should really be getting between 25 to 50 grams.

We’re getting too little fiber in our diets because we’re eating too much processed food, such as cookies, cakes, pretzels, and crackers—all of those things that have been pulverized into a flour and turned into something else.

Meet the doctor with $0 co-pays.

Learn more

Fiber helps fight inflammation, promotes healthy bowel movements, and balances blood sugar. It can also help prevent colon cancer and prevent and control heart disease.

To get more fiber in your diet, try to eat whole foods and skip the processed foods.

High fiber foods we love

  • chia seeds

  • avocado

  • flax seeds

  • sweet potato

  • chickpeas

  • berries

  • broccoli

  • gluten-free oats

If you’ve been eating very little fiber, go slow as you start to introduce more fiber-rich foods, eating a little more every couple of days. Otherwise, you might experience stomach issues like diarrhea, constipation, or bloating. Drinking plenty of water throughout the day will also reduce your chances of gastrointestinal issues as you increase your fiber intake. Follow these guidelines and you shouldn’t have an issue with eating too much fiber.

Robin Berzin, MD

Dr. Robin Berzin is the Founder and CEO of Parsley Health, America's leading holistic medical practice designed to help women overcome chronic conditions. She founded Parsley to address the rising tide of chronic disease in America through personalized holistic medicine that puts food, lifestyle, and proactive diagnostic testing on the prescription pad next to medications. Since founding Parsley in 2016, Dr. Berzin has seen 80% of patients improve or resolve their chronic conditions within their first year of care, demonstrating the life-changing value of making modern holistic medicine accessible to everyone, anywhere. Parsley is available online nationwide.

Dr. Berzin attended medical school at Columbia University and trained in Internal Medicine at Mount Sinai Hospital in New York City. Her book, Prescription for Happiness: How to Eat, Move, and Supplement for Peak Mental Health, was published by Simon Element in January 2022.

Read full bio
Parsley Health
readiness quiz

Get a snapshot of your health - right now.

Take our quiz to get your symptom score and start uncovering the why behind your symptoms.

Related Videos
Is Parsley Health For Me?
What’s the Best Milk to Drink If You Don’t Have A Dairy Allergy?
Omega-3 vs Omega-6 Fatty Acids: Why Essential Fatty Acids Matter
Why Do My Cheeks Get Red When I Drink?
Why Do I Sweat When I Sleep?

Parsley Health medical providers are trained to treat the root cause of complex, chronic conditions and symptoms. Ready to start feeling better?

Get Symptom Score