If you’ve been on TikTok lately, you’ve probably seen people talking about fibermaxxing—the practice of eating as much fiber as humanly possible, usually in the name of better digestion, improved cholesterol, and overall health.

And listen, I’m a dietitian, so I am very pro-fiber. Most people could stand to eat a lot more of it. But here’s the thing: fibermaxxing sounds like a fun, health-hacking party… until you realize you’ve shown up way too early, cranked the volume to 11, and scared all the guests away. In other words, ramping up your fiber too fast can backfire (both figuratively and literally, if you catch my drift).

What Even Is Fibermaxxing?

In a nutshell, fibermaxxing is just a trendy term for going all-in on fiber intake. Think chia seeds in your yogurt, beans in your salad, lentils in your soup, and psyllium husk in your smoothie. The intentions are good—fiber supports digestion, helps with blood sugar control, keeps cholesterol in check, and helps you feel fuller for longer. But like any nutrition trend, the devil is in the details.

The Case for More Fiber

The average American eats around 15 grams of fiber a day—less than half of the recommended amount (25 grams for women, 38 grams for men). So, yes, eating more fiber is a great goal for most people. Whether you’re trying to improve gut health, manage weight, or just keep things “moving along,” boosting fiber can be a game changer.

Why Too Much, Too Soon Can Be a Problem

Here’s where fibermaxxing can go off the rails. Your gut bacteria love fiber, but they need time to adjust to big changes. Go from low-fiber takeout meals to three bean-based meals a day overnight, and you may end up with bloating, cramping, and some serious trust issues when it comes to farts.

When it comes to fiber, think of your digestive system like a new workout routine—you wouldn’t go from couch to a marathon in one week without expecting soreness. Instead, you’d build up gradually, letting your body adapt along the way.

How to Fibermaxx Without Regret

If you want to hop on the fibermaxxing train, here’s how to do it without derailing your gut in the process:

• Increase slowly. Add 3–5 grams of fiber every few days instead of doubling your intake overnight.
• Mix it up. Aim for a variety of fiber sources—fruits, veggies, whole grains, legumes, nuts, and seeds—to keep your gut microbes happy.
• Stay hydrated. Fiber works best when it has water to absorb. Without it, things can get… stuck.
• Listen to your body. Some bloating is normal at first, but if you feel miserable, dial it back a bit and give your gut a breather.

Bottom line: fibermaxxing isn’t inherently bad—in fact, for many people, it could be a huge health upgrade. But like most things in nutrition, it works best when you ease into it, pay attention to how your body responds, and avoid treating “more” as “better” by default. Your gut (and everyone in your vicinity) will thank you.

If you want to learn more about how to fuel your body in a way that feels good and actually works for your goals, join our 6-week Macro Challenge, kicking off August 18th. We’ll help you build habits that last, improve your diet quality, and avoid the pitfalls of “too much, too soon” in any area of nutrition.

Spots are limited—grab yours now and get ready to feel amazing.