Some of the best health news of the year is hiding in a bowl of oatmeal, a pot of beans and a crisp autumn apple.
Dietary fiber is not flashy. But researchers keep finding that this humble part of plant foods does a lot of quiet good, and most of us aren’t getting enough of it.
Scientists Say Fiber Deserves a Promotion
In January 2026, a team of researchers including scientists from the University of Dundee in Scotland and the University of Otago in New Zealand made a bold case in the journal Nature Food. They argued that dietary fiber should be officially recognized as an essential nutrient, which, according to the University of Dundee, would make it the first new essential nutrient in more than 50 years.
Why? A nutrient is considered essential when it benefits health, the body can’t make it on its own, and going without it causes measurable harm. The team says fiber checks all three boxes. Across many studies, eating more fiber was linked to better body weight, cholesterol, blood sugar and blood pressure. And when people were followed over long periods, those who ate more fiber had lower rates of heart disease, type 2 diabetes and colorectal cancer, and were less likely to die early.
“When following people over decades, we see those with higher fibre intakes get less heart disease,” said Associate Professor Andrew Reynolds of the Otago Edgar Diabetes and Obesity Research Centre in New Zealand, as quoted by the University of Dundee.
Another researcher on the team, Professor Sir Jim Mann, pointed to the gut: “The gut microbiome exists almost exclusively on the dietary fibre we eat.”
Most of Us Fall Short
Here is the surprising part. In the United Kingdom, the 2025 National Diet and Nutrition Survey found that only 4% of adults met the government’s goal of 30 grams of fiber a day, according to the University of Dundee.
The picture in the United States is similar. An analysis of national survey data from more than 14,600 American adults, presented at a 2021 American Society for Nutrition meeting, found that only about 7% of adults met fiber recommendations: about 5% of men and 9% of women.
How Much Is Enough?
Numbers vary a little depending on who gives the advice, but the idea is the same: most adults need more.
- A Tufts University article published in March 2026 notes that the Dietary Guidelines for Americans 2020-2025 recommended about 22 to 34 grams a day for adults, depending on age and sex, or roughly 14 grams for every 1,000 calories you eat.
- A Mayo Clinic gastroenterologist, Dr. Purna Kashyap, says healthy adults should aim for about 30 to 40 grams a day, while older adults may need to balance fiber with getting enough calories and protein.
To picture it: the American Society for Nutrition notes that a cup of pearled barley has about 6 grams of fiber, while a cup of white rice has less than 2 grams.
Easy Ways to Add More at Home
Mayo Clinic suggests filling your plate with a variety of plant foods. Whole foods offer a mix of different fibers, so food is preferred over supplements when possible. Some family-friendly ideas:
- Fruit: berries, pears and apples (leave the peel on when you can)
- Vegetables: broccoli, Brussels sprouts and leafy greens
- Legumes: lentils, chickpeas and beans in soups, chili or tacos
- Nuts and seeds: almonds, chia seeds and flax seeds sprinkled on yogurt or cereal
- Whole grains: oats, whole-wheat bread and wheat bran
Small swaps add up. Try brown rice or barley in place of white rice, toss a can of rinsed beans into a pot of soup, or make a “build your own” oatmeal bar on a Saturday morning so the kids can pick their own fruit and toppings.
Go Slow and Drink Up
One important tip: don’t jump from very little fiber to a lot overnight. Mayo Clinic advises increasing fiber by about 3 grams per week and holding that level for 7 to 10 days before adding more, which helps limit gas and bloating. Drinking plenty of fluids matters too. The Tufts article warns that adding fiber too quickly, or without enough water, can cause constipation or diarrhea.
“Beloved, I wish above all things that thou mayest prosper and be in health, even as thy soul prospereth.”
3 John 1:2 (KJV)
Caring for our bodies is one way we honor the gift of life God has given us. A bowl of lentil soup shared around the table this fall can nourish both the body and the heart.
This article is for general information only and is not medical advice. If you have a digestive condition, diabetes, kidney disease, or take medications, or if you’re thinking about fiber supplements, check with your doctor or a registered dietitian before making big changes to your diet.
What’s your family’s favorite fiber-rich meal or snack? Share your ideas in the comments!
Sources: University of Dundee, “Dietary fibre should be classed ‘essential nutrient’ for good health” (Jan 20, 2026); Mayo Clinic News Network, “Mayo Clinic Q&A: Why is fiber good for your overall health?” (Mar 13, 2026); ScienceDaily / Tufts University, “Scientists say this simple diet change could transform your gut health” (Mar 8, 2026); American Society for Nutrition, “Most Americans are not getting enough fiber in our diets” (Jun 9, 2021); 3 John 1:2 KJV
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