Nutrition experts emphasize the importance of consuming foods that provide both protein and dietary fiber, noting that these nutrients offer complementary health benefits. While protein has recently garnered significant attention for its role in muscle maintenance and overall health, fiber remains crucial for digestive health and reducing the risk of chronic diseases. However, most Americans do not meet the recommended daily fiber intake — 25 grams for women and 38 grams for men — despite generally adequate protein consumption.

Cheryl Anderson, professor and dean of public health at the University of California, San Diego, highlighted the challenge of finding foods that supply substantial amounts of both nutrients. Animal-based protein sources, such as beef, fish, and chicken, typically contain little to no fiber, while fiber-rich foods like fruits and vegetables often offer limited protein.

Experts recommend incorporating a selection of foods known to provide a balance of protein and fiber, which can promote satiety, support muscle maintenance, enhance gut health, and potentially reduce risks for conditions such as Type 2 diabetes and heart disease. Penny Kris-Etherton, professor emeritus of nutrition sciences at Penn State University, emphasized the value of these foods for meeting nutrient goals without surpassing calorie limits.

Key groups that deliver both protein and fiber include legumes, soy products, nuts, seeds, and whole grains.

Legumes — encompassing chickpeas, lentils, dry peas, and various beans — are rich in both nutrients. For example, a half-cup of cooked lentils offers approximately nine grams of protein and eight grams of fiber, while the same amount of cooked black beans contains around 7.5 grams of each. Research indicates that regular legume consumption is associated with healthier body weights, lower blood pressure, reduced cholesterol levels, and decreased risk of chronic diseases. A large review published in 2023 found that an additional 50 grams of daily legume intake corresponded with a 6 percent reduction in all-cause mortality over the study period.

Soy foods, including edamame, tofu, soy milk, and tempeh, are described by Dr. Walter Willett, professor of epidemiology and nutrition at the Harvard T.H. Chan School of Public Health, as nearly ideal nutritional sources. These products provide generous amounts of protein alongside healthy fats, such as omega-3 and omega-6 fatty acids. Half a cup of shelled edamame contains about nine grams of protein and four grams of fiber, while the same quantity of raw tofu delivers 22 grams of protein and three grams of fiber. Unlike cow’s milk, soy milk also contains fiber, with one cup providing roughly 1.5 grams of fiber and eight grams of protein.

Nuts also offer a valuable combination of protein and fiber, with peanuts yielding about 7.5 grams of protein and 2.5 grams of fiber per one-ounce serving, and almonds providing six grams of protein and 3.5 grams of fiber. Similarly, seeds contribute fiber, protein, and beneficial fats. Pumpkin seeds offer approximately 8.5 grams of protein and two grams of fiber per ounce, while chia seeds contain nearly five grams of protein and 10 grams of fiber. Studies suggest regular seed consumption may support immune health, weight management, and protection against inflammation, Type 2 diabetes, and hypertension.

Whole grains, defined by the presence of bran, endosperm, and germ in the kernel, round out the list of nutrient-rich foods. Varieties such as farro, brown rice, quinoa, and oatmeal — along with whole-grain breads and crackers — supply both protein and fiber. For instance, a half-cup of rolled oats provides around six grams of protein and five grams of fiber, while a cup of cooked quinoa contains about eight grams of protein and five grams of fiber. Consumption of whole grains has been linked to improved gut health and lower risks of colorectal cancer, cardiovascular disease, and Type 2 diabetes.

Together, these diverse food groups offer a practical way to meet daily protein and fiber needs, contributing to overall health and chronic disease prevention.