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Experts Warn: Gradual Fibre Increase Key for Gut Health

3/31/2026

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Fibremaxxing Caution

The fibremaxxing trend encourages significant increases in dietary fibre.
Experts warn against rapid fibre changes, saying excessive fibre can overwhelm gut bacteria.
Individuals with digestive issues, such as irritable bowel syndrome, may experience worsened symptoms.
Recommendations suggest gradually increasing fibre by 8 grams per day and boosting water intake.
A personal account describes moving from a high-fibre vegan diet to a balanced approach, stressing moderation for gut health.

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Influencers Promote Fibre

Health influencers on TikTok are promoting high fibre diets and urging followers to eat large amounts.
Dr. Emily Leeming, a dietitian at King’s College London, says ancestors ate up to 100 grams daily, while modern diets fall short.
The average Brit consumes about 16 grams of fibre, far below the 30-gram recommendation.
Increasing fibre can support digestion and lower disease risk, but should be added gradually with hydration.

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Fibremaxxing Caution

The fibremaxxing trend encourages significant increases in dietary fibre.
Experts warn against rapid fibre changes, saying excessive fibre can overwhelm gut bacteria.
Individuals with digestive issues, such as irritable bowel syndrome, may experience worsened symptoms.
Recommendations suggest gradually increasing fibre by 8 grams per day and boosting water intake.
A personal account describes moving from a high-fibre vegan diet to a balanced approach, stressing moderation for gut health.

1 / 2