Fibremaxxing: The Social Media Trend That’s Mostly Backed by Science

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Fibremaxxing: The Social Media Trend That’s Mostly Backed by Science

Protein-packed products may be dominating the shelves and health conversations, but a new trend is quietly picking up steam: fibremaxxing. Popularised on social media, this trend encourages people to intentionally increase their fibre intake, tapping into the interest in gut health, and offering a contrast to high-protein, low-carb diets that often lack fibre.

What Is Fibremaxxing?

Fibremaxxing refers to the intentional effort to increase dietary fibre intake through legumes, whole grains, fruits, vegetables, seeds, and nuts. Social media creators are sharing their fibre-rich meals, gut health journeys, and even fibre challenges, encouraging followers to meet or exceed the recommended daily intake.

But while the trend leans toward more is better, public health guidance is clear: Australians don’t need to exceed the recommended fibre intake. We just need to meet it. Currently, most adults consume well below the targets: 25g/day for women and 30g/day for men¹. Getting to these levels consistently is where the real health benefits lie.

Fibre: The Undervalued Nutrient

Despite the online momentum, fibremaxxing could help address a real nutritional gap, as not consuming enough fibre can lead to:

  • Higher prevalence of constipation and digestive discomfort
  • Poor gut microbial diversity
  • Increased risk of cardiovascular disease and type 2 diabetes mellitus2

Emerging research also links high-fibre diets to:

  • Improved mental health via the gut-brain axis3
  • Reduced risk of colorectal cancer4
  • Better metabolic outcomes in people with insulin resistance5

Fibre Diversity

While fibremaxxing offers many benefits, it’s not simply a case of more is better. The quality, diversity, and functional properties of fibre sources are equally critical. Recent research from RMIT University proposes a new framework for classifying fibre based on structure, fermentation rate, and physiological function, offering a more targeted approach to dietary recommendations6. This evolving understanding reinforces the importance of diversifying fibre sources and tailoring advice to individual health needs.

Practical Applications for Health Professionals

Encouraging fibremaxxing doesn’t require radical dietary shifts. Here are some strategies to share with patients and clients:

  • Swap refined grains for whole grain options
  • Incorporate a ¼ cup of legumes a day
  • Recommend high-fibre snacks like fruit, nuts, or whole grain crackers
  • Promote fibre-rich breakfast options like oats, barley, or whole grain cereals
  • Showcase fibre-rich meals from a variety of cultural cuisines to support dietary inclusivity and relevance

Fibremaxxing can serve as a timely and relatable entry point for discussions about gut health, balanced nutrition, and achievable food swaps. While the trend promotes going beyond, our population-level goal is far simpler; helping people meet the recommended intake is enough to see significant health benefits.

References

  1. National Health and Medical Research Council (NHMRC). Nutrient Reference Values for Australia and New Zealand [Internet]. Canberra (AU): NHMRC; 2006 [cited 2025 Jul 30]. Available from: https://www.nrv.gov.au/nutrients/dietary-fibre
  2. Soliman GA. Dietary fiber, atherosclerosis, and cardiovascular disease. Nutrients. 2019 May;11(5):1155. doi.org/10.3390/nu11051155
  3. Sarkar A, Lehto SM, Harty S, Dinan TG. Psychobiotics and the manipulation of bacteria–gut–brain signals. Trends Neurosci. 2016;39(11):763-781. [cited 2025 Jul 30]. Available from: https://www.cell.com/trends/neurosciences/fulltext/S0166-2236(16)30113-6
  4. World Cancer Research Fund. Diet, nutrition, physical activity and colorectal cancer. [Internet]. London (UK): WCRF International; 2018. [cited 2025 Jul 30]. Available from: https://www.wcrf.org/diet-activity-and-cancer/risk-factors/colorectal-cancer/
  5. Reynolds A, Mann J, Cummings J, Winter N, Mete E, Te Morenga L. Carbohydrate quality and human health: a series of systematic reviews and meta-analyses. The Lancet. 2019. [cited 2025 Jul 30]. Available from: https://www.thelancet.com/journals/lancet/article/PIIS0140-6736(18)31809-9/fulltext
  6. Opperman C, Majzoobi M, Farahnaky A, Shah R, Van TTH, Ratanpaul V, Blanch EW, Brennan C, Eri R. Beyond soluble and insoluble: A comprehensive framework for classifying dietary fibre’s health effects. Food Res Int. 2025 Apr;206:115843. doi.org/10.1016/j.foodres.2025.115843

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