Is “Fibermaxxing” a Healthy Trend?

Fibermaxxing” has exploded on social media as a new nutrition approach. It encourages people to meet or slightly exceed recommended daily fiber levels by choosing high-fiber foods—like veggies, whole grains, beans, nuts, seeds, and fruits—at every meal.

“While the importance of protein has been dominating the media, fiber deserves equal attention for its role in gut health, heart health, blood sugar control, and weight management,” says Columbia dietitian Jamie Leskowitz, MS, RD. 

What are the health benefits of fiber?

Many adults consume less than half the recommended amount of fiber. Increasing fiber to at least the recommended levels can have broad benefits, including:

• Gut health: Fiber adds bulk to stool and supports good gut bacteria, helping promote bowel regularity and a diverse microbiome. 
• Heart and metabolic health: Soluble fiber can lower LDL (“bad”) cholesterol and help regulate blood sugar levels. Higher fiber intake may help lower the risk of cardiovascular disease and type 2 diabetes.
• Weight and satiety: High-fiber foods help you feel fuller on fewer calories, supporting sustainable weight management.
• Chronic disease protection: Studies link dietary fiber with reduced risk of colorectal cancer and overall mortality. 

What to know about “fibermaxxing”?

“Fibermaxxing” shouldn’t be about “maxing out.” A sudden jump from very low to extremely high fiber can cause bloating, gas, and digestive discomfort, especially without enough water. For most people, a gradual increase—paired with hydration—is recommended for long-term success. If you have any concerns, check with your healthcare provider prior to increasing fiber intake, explains Leskowitz. 

What are the best ways to add fiber to the diet? 

You can boost fiber intake with simple swaps and small additions, including the following:

• Add fruit (such as berries, apples, or pears) and chia seeds to a protein-containing breakfast, such as a yogurt parfait
• Incorporate a high fiber bran cereal into breakfast or a snack
• Swap white bread for higher fiber bread with at least 3g fiber per serving
• Swap white rice for quinoa or farro
• Have a plant-based protein night, where beans, chickpeas, or lentils are the star of dinner
• Make half your plate non-starchy veggies, such as broccoli, artichokes, Brussels sprouts, or carrots
• Sprinkle chia, flaxseed, or almonds onto a salad
• Have a salad for lunch to get a high volume of veggies
• Start your meal with a veggie-based soup
• Try a seasonal grain bowl that includes whole grains, veggies, and a protein

What started as a social media buzzword reflects a simple truth: fiber is essential, and most diets lack it. Done thoughtfully, “fibermaxxing” aligns with longstanding nutrition science and offers a practical way to elevate overall health. 

Jamie Leskowitz, MS, RD, is a registered dietitian and certified diabetes care and education specialist at the Metabolic and Weight Control Center at Columbia.