Fibremaxxing: Trend or Gut Health Booster?

The wellness world is in constant flux, swinging between extremes. For a while, it was ‘proteinmaxxing’ – a relentless pursuit of protein intake fueled by diet fads and amplified by wearable tech like Continuous Glucose Monitors (CGMs). Now, a counter-trend is gaining momentum: ‘fibremaxxing’. But this isn’t just another fleeting diet craze. It’s a potential course correction, backed by emerging scientific understanding of the gut microbiome and its profound impact on overall health. The shift signals a growing recognition that optimal health isn’t about isolating single macronutrients, but about cultivating a thriving internal ecosystem.

The rise of proteinmaxxing, rooted in diets like Atkins and Paleo, was further propelled by the popularity of CGMs. These devices, initially designed for diabetes management, were repurposed by the wellness industry to track blood glucose levels and promote metabolic states like ketosis – a state achieved through high protein, low carbohydrate diets. Protein powders became a convenient, if sometimes costly, solution to meet the demands of this high-protein lifestyle. However, the potential downsides of excessive protein intake, including fibre deficiency, began to surface.

Enter fibremaxxing, spurred in part by the 2024 Netflix documentary, Hack Your Health: The Secrets Of Your Gut, which highlighted the critical role of fibre and fermented foods in gut health. Dr. Jens Walter, professor of microbiome science at APC Microbiome, and his team have been at the forefront of this research, developing the NiMe Diet (Non-industrialized Microbiome Restore diet). The NiMe Diet isn’t about restriction, but about mimicking the dietary patterns of non-industrialized populations, who consistently exhibit lower rates of chronic disease. Their research points to a plant-forward diet, rich in fibre, as a key driver of a healthy gut microbiome.

Dr. Walter’s work challenges the conventional wisdom surrounding fibre, moving beyond the simple distinction between soluble and insoluble fibre to focus on ‘viscous’ and ‘fermentable’ fibres. Viscous fibres slow down nutrient absorption, stabilizing blood sugar, while fermentable fibres nourish beneficial gut bacteria. He also subtly downplays the emphasis placed on fermented foods by some of his colleagues, arguing that the evidence supporting their health benefits is less robust than that for fibre.

Current guidelines recommend 25g of fibre per day, but the NiMe Diet suggests aiming for 40g – a significant increase. While Dr. Walter acknowledges the difficulty of reaching this target, he emphasizes that even incremental increases in fibre intake can yield substantial health benefits. He estimates that a healthy diet, like the NiMe diet, could add ten years of healthy life.

The Forward Look: What Happens Next?

The fibremaxxing trend isn’t likely to fade quickly. Several factors suggest it will gain further traction. Firstly, the growing body of research supporting the gut-health-overall health connection will continue to fuel consumer interest. Secondly, the accessibility of information through platforms like Netflix and the increasing awareness of the limitations of highly processed ‘Western’ diets will drive demand for whole, plant-based foods.

However, several challenges remain. The food industry will likely respond with a wave of “fibre-enriched” processed foods. Dr. Walter rightly cautions against relying on fibre supplements, emphasizing the importance of obtaining fibre from whole foods to benefit from the synergistic effects of various nutrients. Expect to see increased marketing around “viscous” and “fermentable” fibre content in food products, as manufacturers attempt to capitalize on this emerging understanding.

More importantly, the focus on fibre could spur a broader re-evaluation of dietary guidelines. The current recommendations may prove to be insufficient for optimal health, particularly in the context of the modern, industrialized diet. We may see a gradual shift towards more ambitious fibre intake targets, coupled with increased public health initiatives promoting plant-forward eating patterns. The future of wellness isn’t about chasing the latest macronutrient fad; it’s about nurturing the complex ecosystem within us, and fibre is emerging as a cornerstone of that approach.