Fibermaxxing sweeps TikTok as gut health trend goes viral

A new diet trend called fibermaxxing has taken social media by storm, with over 160 million views on TikTok. The approach encourages people to eat far more fibre than usual—sometimes 50 grams or more per day—to improve gut health and digestion. Younger generations, in particular, are driving its popularity as concerns about colorectal health grow.

The trend began in early 2024 when TikTok creator @anomalie promoted high-fibre eating for benefits like weight loss and better digestion. Unlike many diets that restrict foods, fibermaxxing focuses on adding more—think fruits, vegetables, legumes, and whole grains. A single serving of chana masala, packed with chickpeas, can deliver 12 to 15 grams of fibre alone.

Experts generally support the shift, as most Americans fall short of fibre recommendations. Only 5% meet the daily target, with the average person consuming about half the suggested amount. But dietitians warn that suddenly increasing intake by more than 5 grams per day can cause bloating or discomfort. Very high levels may also affect mineral absorption in some cases.

The trend reflects broader concerns about gut health, especially among younger adults. Colorectal cancer rates in people under 50 have been climbing, making fibre's protective role more personal. As a result, fibre has become the second most sought-after nutrient, with 54% of American consumers now looking for high-fibre foods.

Fibermaxxing marks a change in diet culture, moving away from cutting foods and toward adding beneficial nutrients. The trend's rise shows growing awareness that many standard diets lack essential fibre. For those trying it, gradual increases and whole-food sources remain the safest approach.