Fibermaxxing: When a Good Nutrient Becomes a Competition
If you’ve been on social media lately, you’ve probably seen someone posting about meeting or exceeding their daily fiber intake by adding fiber-rich foods to their plate, swapping foods or products for higher fiber options, or stirring chia or flax seeds into a meal. . This trend is called “fibermaxxing,” and it’s the latest trend, following in protein’s footsteps.
At Namaste Nourished, we’re a team of registered dietitians who value and practice evidence-based medicine, so let’s start with the good news: fiber is a nutrient you want to have in your diet. It’s an important nutrient that supports digestion and overall health, and the 2025-2030 Dietary Guidelines for Americans give increased attention to dietary fiber and its role in digestive and overall health. They also recommend prioritizing fiber-rich whole grains. Beans, fruit, oats, and vegetables belong in a varied, satisfying diet.
So why do we have hesitation around this trend? Because of one little word, and the damage we know can come from focusing on a single nutrient.
The Problem With “Maxxing”
Eating enough fiber is a nutrition goal. Maxxing it is a competition. The suffix suggests there’s a ceiling of “perfect” eating you should keep pushing toward, and for people who have lived with an eating disorder, that’s a familiar trap. A nutrient becomes a rule, and the rule becomes a score. In eating disorder recovery, we often focus on what a food provides beyond nutrition. We might suggest a less fiber-rich food because it pairs better with a meal, it’s easier to digest, or it simply tastes better. Satisfaction in food matters (we even wrote a blog about it! Read it here.)
Additionally, a balanced plate matters because different food groups have different functions from a physiological perspective. We fear that focus on one food group may actually cause folks to miss out on meeting their needs with other food groups.
A lot of fibermaxxing content also isn’t really about fiber. It’s about feeling full on less food. Volume eating, meaning loading up on large portions of low-calorie, high-fiber foods to quiet hunger, is something many people in recovery will recognize. When the goal is to override hunger instead of responding to it, the food may look healthy, but the pattern isn’t. This is concerning, as people may be undernourishing, engaging in disordered behaviors, or starting down a dangerous road towards an eating disorder.
Why Fiber Can Get In The Way of Recovery
Fiber is filling, which is usually a perk. In eating disorder recovery, it can work against you. Our bodies often need a reintroduction of consistent nourishment through the day, and very high-fiber meals can leave you full before you’ve eaten enough.
That’s why we think about fiber as one piece of a whole meal plan, not a number to hit on its own. In eating disorder recovery, we focus on re-learning hunger and fullness cues. Fibermaxxing can distort these feelings, and make it difficult to know when you are actually full, which slows down and hinders true body connection.
Many people with eating disorders also suffer from gastrointestinal issues, including gastritis, IBS, constipation, acid reflux, GERD, bloating, and abdominal pain. When you don’t eat enough, your body starts saving energy where it can, in order to keep your body functioning. This includes slowing digestion. Over time, this can lead to a variety of GI issues, which can be worsened with the addition of extra fiber. Additionally, the influx of fiber can cause temporary bloating and distention, which may aid in body image dissatisfaction and interfere with eating disorder recovery.
Where Orthorexia Comes In
Fibermaxxing can also overlap with orthorexia. NEDA explains that paying attention to the nutritional quality of your food isn’t a problem in itself, but people with orthorexia become so fixated on “healthy eating” that they damage their own well-being. There is not currently formal diagnostic criteria for orthorexia, and many eating disorder experts treat it as a form of anorexia nervosa and/or obsessive-compulsive disorder. The Academy of Nutrition and Dietetics, citing NEDA, lists warning signs that include compulsively checking ingredient lists and Nutrition Facts labels, cutting out more and more foods, and obsessively following “healthy lifestyle” social media accounts. To read more about orthorexia signs and symptoms, click here (I’ll link).
To be clear, following a certain diet or trying to eat healthfully doesn’t, by itself, mean someone has orthorexia or another eating disorder. What matters is how it feels and how the person acts. Is the behavior flexible and enjoyable, or rigid and anxious?
The Gut Side of Things
Even without an eating disorder in the picture, more isn’t automatically better. Ramping up fiber too quickly can cause gas, bloating, or even diarrhea, so it needs to be added gradually. Fiber also needs fluids to do its job, and not enough can lead to nausea or constipation. If you’re in treatment, your dietitian can help you decide how and when to bring more fiber in. If you don’t have an eating disorder, we still recommend going slow with fiber, and hydrating well. This isn’t a race, and there is no prize for fibermaxxing the fastest.
A Gentler Approach
You don’t have to track anything to eat well. If a trend starts to feel like pressure, try asking yourself:
Am I eating this because I want to, because I feel like I have to, or because someone says it’s “healthy”?
Do I feel guilty or anxious when I don’t “hit” a certain goal?
Is this making meals easier, or more stressful?
Would I eat this way if no one were watching?
If your answers worry you, that’s useful information, and it’s a good time to reach out to a dietitian or therapist who specializes in eating disorders.
Trends come and go. Your relationship with food is the thing worth protecting.
If you’re struggling with food, you don’t have to figure it out alone. Reach out to our team to talk about support options.
References
Academy of Nutrition and Dietetics (eatright.org). “Orthorexia: An Obsession with Eating Pure.” https://www.eatright.org/health/health-conditions/eating-disorders/orthorexia-an-obsession-with-eating-pure
National Eating Disorders Association. “Orthorexia.” https://www.nationaleatingdisorders.org/orthorexia/
University of Arizona Cooperative Extension. “Dietary Fiber.” https://extension.arizona.edu/sites/extension.arizona.edu/files/pubs/az1127.pdf
University of California Agriculture and Natural Resources. “Ways to Boost Fiber” (adapted from eatright.org). https://ucanr.edu/media/247405
U.S. Department of Agriculture & U.S. Department of Health and Human Services. Dietary Guidelines for Americans, 2025-2030 (released Jan. 7, 2026). Official site: realfood.gov. Summaries: Oklahoma State University Extension, https://extension.okstate.edu/fact-sheets/the-new-dietary-guidelines-for-americans-2025-2030; CACFP Sponsors Association, https://www.cacfp.org/?p=114780