Camilla Jessen
Dietitians say the omission could have long-term consequences.
The 2025–2030 Dietary Guidelines for Americans were released last week, introducing a redesigned food pyramid that places animal protein and dairy at its core. Fruits and vegetables appear lower down.
According to the guidelines, protein supports muscle growth, bone health and metabolic function. However, critics note that the emphasis on meat and dairy leaves little room for nutrients that come exclusively from plants.
One of those nutrients is fiber.
Why fiber matters
The guidelines acknowledge that “high-fiber foods support a diverse microbiome, which may be beneficial for health.”
Yet they recommend just three servings of vegetables and two servings of fruit per day, without defining portion sizes.
Beans and legumes appear on the pyramid but receive little explanation, despite being affordable sources of both fiber and plant-based protein.
Registered dietitian Madeline Peck told EatingWell that fiber plays a central role in health. “Fiber is critical for managing our cholesterol, blood sugar and supporting a healthy gut microbiome,” she said.
“When you don’t consume enough fiber, one of the more immediate effects is digestive discomfort,” Peck added. “Long term, not eating enough fiber could increase your risk of cardiovascular disease, increase chronic inflammation and even weaken the immune system.”
A national shortfall
According to federal nutrition data cited by EatingWell, around 90 percent of Americans do not meet recommended fiber intake levels. That gap persists even as rates of heart disease, diabetes and digestive disorders remain high.
Health experts argue that downplaying fiber in national guidance risks reinforcing already poor eating habits.
How to eat more
Peck suggests simple, practical changes. “A simple way to boost fiber intake is to eat more beans,” she said, noting they can be used in salads, tacos, soups and sauces.
She also recommends swapping refined grains for whole grains. Regular pasta contains as little as zero to two grams of fiber per serving, while whole-grain versions can provide up to eight grams.
Nuts and seeds, she added, can easily be incorporated into smoothies, salads and soups.
What it means
While the new guidelines spotlight protein, nutrition experts stress that fiber remains essential for digestion, heart health and longevity. Some people may consider supplements, but dietitians advise speaking with a healthcare professional first.
Sources: Dietary Guidelines for Americans, EatingWell
