A new report published in the Journal of the American College of Cardiology finds that only 6% of American adults are eating enough fiber to support a healthy heart. The report, published September 30, 2026 and covered by ABC News and Good Morning America, reviewed long-term studies and clinical trials — and revealed a massive gap between how much fiber we need and how much we actually eat.
What the New Fiber Report Found
The report reviewed decades of evidence linking fiber intake to heart health. Its headline finding: just 6% of American adults meet the recommended daily fiber intake. For adults aged 19 to 50, that target is 25 grams of fiber per day for women and 38 grams per day for men.
This isn't new bad news so much as confirmation of a chronic problem. Research published by The Conversation found that from 2013 to 2018, only 4% of U.S. adults met their recommended adequate fiber intake, with average consumption sitting at about 16 grams per day — well under the guidelines. The story has been picked up by EatingWell, The Independent, The Washington Post, and Yahoo Health, and is still trending, per Archynetys.
Why Fiber Matters for Your Heart and Body
Fiber's benefits go far beyond digestion. Research has consistently linked high-fiber diets to a lower risk of cardiovascular disease and colorectal cancer, as well as improved arthritis symptoms. Every 7 grams of fiber eaten daily is associated with a 9% drop in heart disease risk, according to a review of 22 studies in the British Medical Journal, partly because fiber helps remove excess cholesterol before it can clog arteries.
"It's important to eat a variety of these foods. The more different types of fiber-rich foods you eat, the more different types of fiber you'll get, which is optimal for your health," says Dr. Purna Kashyap, a gut-health expert quoted by Newswise. Whole foods also deliver a mix of fermentable fiber (which feeds beneficial gut microbes) and nonfermentable fiber (which supports regular digestion).
How to Eat More Fiber: Practical Tips
Closing the fiber gap doesn't require an overhaul — small, sustainable changes add up. Doctors and dietitians recommend:
- Make every meal and snack count. Aim for 8–12g of fiber per meal, plus fiber in snacks, so you're not trying to cram it all into one sitting (Medscape).
- Check the carb-to-fiber ratio. On packaged foods, divide total carbs by fiber and aim for a ratio of 5:1 or less (Medscape).
- Start with breakfast. One cup of oatmeal with a cup of blackberries delivers about 12g of fiber; swap white bread and rice for whole-grain versions.
- Pair fiber with protein. Carrots with a cheese stick, yogurt with berries, or hummus with celery keep you full and on track.
- Build up gradually. Add about 3g of fiber per week — a cup of carrots, a medium sweet potato, or a cup of brown rice — and drink plenty of water to avoid bloating (Newswise).
The fiber gap is real, but so is the fix. Swapping refined carbs for whole grains, adding beans and legumes to meals, and snacking on fruit instead of fiber-free treats can get most adults to the 25–38 gram target — and give their hearts a measurable benefit.
Watch: How much fiber should you eat in a day? — Purdue University nutrition professor Heather Eicher-Miller explains why fiber matters and how many fruits, vegetables, and whole grains you need daily.
Sources: Archynetys, Medscape, Mayo Clinic, Newswise; original reporting by ABC News / Good Morning America (Yi-Jin Yu, Oct 2, 2026).