Fiber Trends 2026: Why Circana says ‘fibermaxxing’ is becoming a long-term consumer habit

Consumer demand for fiber has continued to grow beyond short-term trends, with new insights from Circana suggesting that “fibermaxxing” is evolving into a sustained dietary shift tied to broader health and wellness priorities.

• Circana reported that 'fibermaxxing', driven by social media and health awareness, has shifted fiber from a nutrient of avoidance to one of active consumer intention.
• Consumers have increased fiber intake through whole foods, fortified packaged products, and supplements, with younger demographics often combining all three approaches.
• The firm warned that overconsumption and poor communication around fiber types could lead to negative consumer experiences and potential brand trust issues.

The concept of fibermaxxing, popularized across social media, referred to the practice of increasing daily fiber intake to support gut health and overall wellness. While the term itself may have been relatively new, Circana indicated that the behavior behind it reflected a deeper and more durable shift in how consumers approached nutrition.

Sally Lyons Wyatt, a global executive at Circana, wrote that interest in fiber aligned with a broader move toward holistic and preventative health. Rather than focusing on individual nutrients in isolation, consumers had begun to see fiber as part of a wider strategy that also included protein and other functional ingredients.

Circana’s analysis suggested that fiber had undergone a notable repositioning in the consumer mindset. Once treated as something to monitor or even avoid, it had increasingly been seen as a positive addition to the diet, associated with digestive health, weight management, blood sugar control, and mental clarity.

Several factors had contributed to this shift. Awareness of gut health had increased steadily in recent years, alongside a growing understanding of the microbiome and the role fiber played in supporting it. At the same time, consumers had shown stronger interest in foods and beverages that delivered multiple benefits, including satiety, functionality, and clean-label appeal.

The rise in the use of GLP-1 medications for weight management had also played a role, with Circana noting that these treatments had reinforced interest in dietary approaches that complemented appetite regulation and metabolic health.

As a result, consumers had actively sought out fiber across multiple product categories and consumption occasions. Circana identified three primary pathways through which fiber intake had increased. The first was through whole foods such as fruits, vegetables, legumes, and grains, particularly among younger and health-motivated consumers. The second involved packaged foods and beverages that either naturally contained fiber or had been fortified, including bars, cereals, snacks, tortillas, yogurts, and drinks carrying “high fiber” or similar claims. The third pathway was supplements and functional formats, where the company reported strong growth in powders, gummies, prebiotic blends, and digestive health products.

These pathways were not mutually exclusive. Many consumers had combined them, effectively layering fiber intake throughout the day. Circana’s data indicated that younger consumers in particular were likely to source fiber from both whole foods and supplements, reflecting a more proactive and experimental approach to nutrition.

However, the report also highlighted potential risks associated with the trend. While the benefits of fiber were well established, excessive intake could lead to digestive discomfort and reduced nutrient absorption, particularly when fiber displaced other important components of the diet. Individual tolerance levels varied widely depending on factors such as life stage and health status, and different types of fiber behaved differently within the gut.

Circana suggested that this complexity had not always been communicated effectively to consumers. Treating fiber as a single, uniform ingredient could lead to misunderstandings, especially when certain formats or concentrations did not align with individual tolerance levels.

For brands and retailers, this created both an opportunity and a responsibility. Companies that developed fiber-forward products and supported them with clear, balanced messaging could strengthen their position in an increasingly competitive market. At the same time, poor communication or overemphasis on high fiber content without context could result in negative consumer experiences and longer-term reputational risks.

Circana advised that brands should shift their messaging away from a focus on quantity alone and toward personalization and balance. Positioning fiber as part of a broader dietary routine, rather than as a target to maximize, could help align products with consumer expectations. The company also emphasized the importance of clear, accessible guidance, using simple cues to help consumers understand how and when products should be consumed.

Merchandising strategies could also evolve, with a move toward organizing products by benefit or need state rather than by nutrient content alone. Highlighting attributes such as digestive comfort, fullness, or heart health could resonate more effectively than focusing solely on fiber grams.

Transparency was identified as another critical factor, particularly as consumers and health professionals placed greater scrutiny on product claims. Clear communication around fiber types, usage occasions, and potential tolerance considerations could help build trust and reduce the risk of dissatisfaction.

Looking ahead, Circana indicated that the next phase of growth in fiber consumption would likely be shaped by personalization and technology. Advances in artificial intelligence and data-driven nutrition could enable more tailored dietary recommendations, while increasing consumer sophistication was expected to drive higher expectations for product clarity and performance.

The company concluded that the long-term trajectory of fiber demand would not be determined by which products contained the highest levels, but by those that delivered consistent, positive consumer experiences.