What a cultural phenomenon. Take anything that’s generally “good” and extreme-ify it until it reaches the point of obsession. 

Fiber is good. More fiber is better. Maxxxxxing fiber is BEST.

I could speak about any number of the things I’m seeing being “maxxed” on social media these days, but I’ll try to stay in my lane and talk about fiber.

Is maxxing your fiber a good idea?

Short answer: no. 

Could most Americans stand to eat more fiber? Absolutely. The average person is probably only eating half of the fiber public health guidelines recommend. 

Does increasing fiber help if you’re experiencing gut health issues, IBS, or other digestive disorders? Maybe. It depends on what type, what source, what dose and what frequency. It depends on what type of GI symptoms you have, the health of your gut microbiome, etc. 

Many people immediately go to fiber supplements when they are trying to eat more fiber, and those are widely variable in their composition and what type of person they’ll help. Some are massively gas-producing and will cause you a lot of discomfort if you jump in too eagerly, or if you have a sensitive gut. Some are very motility-promoting, and if you already have loose stools, they actually might make things worse.

Others go to ultra-processed food sources of fiber, like fiber cereals, fiber bars, etc. These have even more variability as far as ingredients, and many of them use inulin, which, while not inherently harmful, is a common symptom trigger for individuals with IBS.

Others might use whole foods as a source of fiber, but go a little wild with portions, or forget the importance of other foods and nutrients, as well. Fiber has its place, but it must be balanced with other important nutrients like energy, protein, fat, vitamins, minerals, and water.

If you’re looking for personalized support that goes beyond the hype, consider working with a registered dietitian nutritionist. It’s literally our job to be experts in this field and help you build a plate that feels good for your gut—no maxxing required.

If you have IBS and you’re disappointed to hear that fibermaxxing probably isn’t the answer that will relieve all your symptoms, check into my Living Well with IBS course. The first module will help you better understand your IBS, and it’s completely free.