The Hidden Fibre Gap in Modern Diets: Why “Fibremaxxing” Is the New Gut Health Trend
In recent years, digestive health has moved firmly into the spotlight and consumers are increasingly interested in how the gut influences overall wellbeing, from immunity and metabolism to mood and energy. Amid this growing awareness, a new social media trend has emerged, #fibremaxxing. While the term may be new, the concept behind it is a longstanding nutritional challenge about the fibre gap in modern diets referred to nutritionists as "a silent fibre deficiency," that often goes unnoticed and can cause long-term health implications.
The Royal Society (2025) suggests that fibre plays a far broader role in supporting metabolic health, immune function, and chronic disease prevention. The challenge is that modern eating patterns have steadily reduced natural fibre intake. Over several decades, highly processed foods have dominated many diets. During processing, much of the natural fibre found in whole grains, legumes, vegetables, and fruits are removed to improve texture, shelf life and or palatability. Some foods marketed as “healthy” can be surprisingly low in fibre once refined ingredients are used.
In the UK, the NHS (2026) recommends around 30 grams of fibre per day for adults. However, national dietary surveys suggest that the average intake is closer to 20 grams per day, leaving a substantial gap between recommended and actual consumption. For many individuals, this shortfall develops gradually and because fibre deficiency does not present immediate symptoms in the same way as other nutrient deficiencies, it often remains unnoticed.
Dietary fibre functions as a prebiotic substrate, providing nourishment for beneficial gut bacteria. When fermented in the colon, fibre produces short-chain fatty acids (SCFAs) such as butyrate, which support gut barrier integrity and help regulate immune responses. As a result, higher fibre intake has been associated with several health benefits such as but not limited to:
As awareness of gut health grows, consumers are increasingly looking for ways to optimise their digestive systems. This shift has helped drive the rise of the #fibremaxxing trend, particularly across social media platforms. The concept centres on intentionally increasing fibre intake to support gut health and overall wellbeing.
Consumers are experimenting with fibre-rich foods, supplements, and functional ingredients as part of daily wellness routines that are aimed at increasing their "gut health." For the nutrition industry, this trend reflects a broader shift toward proactive health management, many consumers are now seeking to optimise gut function before issues arise and this evolving mindset is also opening the door for innovations that bridge the fibre gap.
Spotlight Ingredients Supporting Fibre Intake
The ProEarth® Range focuses on plant-based protein ingredients that align with the growing demand for sustainable and functional nutrition. Many ingredients within the range provide natural sources of dietary fibre alongside phytonutrients that support gut microbiota diversity and digestive wellbeing. These ingredients are particularly well suited for incorporation into functional foods, beverages, and nutritional supplements designed to support everyday gut health.
Feiolix® is a botanical ingredient derived from feijoa fruit. Known for its rich composition of polyphenols and naturally occurring compounds, Feiolix® supports digestive balance while also delivering antioxidant activity. The ingredient has been explored for its potential role in supporting the gut microbiome and helping maintain digestive comfort, making it a valuable addition to formulations targeting gut health.
Derived from green kiwifruit, Actazin® is a clinically studied ingredient widely recognised for its digestive support properties. Rich in natural fibre and bioactive compounds, Actazin® helps promote healthy bowel function and gut motility. Its gentle action makes it suitable for daily digestive support products, particularly those aimed at improving gut comfort and regularity.
While the #fibremaxxing trend may be gaining attention online, the underlying issue it highlights is very real. Many individuals simply do not consume enough fibre to support optimal health. Bridging this gap encourages:
As consumers continue to prioritise gut health, fibre is likely to remain a central focus in nutrition and product innovation. For brands and formulators, the opportunity lies in developing, science-backed solutions that help consumers increase fibre intake without compromising taste, convenience, or functionality.