Benefit stacking, explained:
- Protein is becoming the baseline rather than the differentiator, pushing snack developers towards fibre, gut health and increasingly complex combinations of functional benefits.
- Every additional benefit adds formulation, cost, regulatory and communication pressures, while taste remains the non-negotiable reason consumers come back.
- Fibre may be emerging as ‘the new protein’, but manufacturers risk repeating the same arms race unless every ingredient earns its place in the product.
Protein’s takeover of the snack aisle has been extraordinary, spreading far beyond sports nutrition into cookies, crisps, granola, breakfast cereals, brownies, popcorn and products that once competed almost entirely on indulgence. And the obsession still has room to run: Innova Market Insights says 61% of European Gen Z consumers are eating more protein, while almost one in 10 new food and beverage launches in Europe now carries a high-protein or source-of-protein claim.
Yet protein is rapidly acquiring company. Manufacturers are pairing it with fibre and prebiotics, while gut health, satiety, reduced sugar, plant diversity, collagen, creatine, electrolytes, vitamins, adaptogens and healthy-ageing ingredients compete for the same piece of packaging. Innova has identified ‘claim stacking’ – combining two or more physical and mental health benefits in a single product – as a notable development in functional food and drink innovation in 2026.
Gut health shows how quickly the stack can build. Global food and beverage launches carrying a gut-health claim rose 61% in 2025, according to Innova, while 38% of gut-health launches featured fibre and 19% probiotics. Protein and fibre are increasingly appearing together, with immunity, energy, sleep and weight management adding further layers. Yet Innova also reports that many consumers seek out fibre and probiotics without fully understanding how the two relate.
Therein lies an awkward question for product developers: if consumers already struggle to interpret two familiar functional ingredients, what happens when one bar tries to sell them protein, fibre, probiotics, collagen, adaptogens and electrolytes at the same time?
Balancing more benefits with better products
The launches themselves are becoming more ambitious. Zoe introduced its Gut Health Bar in the UK in June, containing more than 10 plant ingredients, 8g of fibre, 7g of plant protein and less than 5g of sugar, without artificial sweeteners or additives. Bio&Me’s Fibre+Protein bars, launched in October 2025, pair 9g of protein with fibre from 10 diverse plants. The company was co-founded by Dr Megan Rossi – a registered dietitian, nutritionist, King’s College London research fellow and gut-health specialist – who has argued that developers have focused too heavily on protein in isolation and should pay greater attention to the protein-to-fibre balance.
The trend goes further. Innova cites Scotland-based Vybey’s Complete Nutrition Bar, which combines high protein and tapioca fibre with digestive health, energy and alertness positioning, while Singapore’s Hey! Chips Superbeans line brings protein together with claimed immune, gut and joint-health support.
A snack formulation, however, isn’t a suitcase that can be endlessly stuffed until someone finally has to sit on the lid. Protein can contribute hardness, dryness, bitterness or chalkiness depending on its source and application, while fibres vary substantially in water binding, viscosity and structural effects. Sugar reduction can remove sweetness, bulk and functionality simultaneously, while fat reduction can alter lubrication, flavour delivery and mouthfeel. Add probiotics, collagen or botanicals and the technical brief gets harder again.
A developer attempting a high-protein, high-fibre, low-sugar, gut-friendly cookie with a clean label is therefore managing ingredient systems that can have competing effects on texture, flavour, processing and shelf life.
Taste remains the line manufacturers can’t afford to cross. Innova’s 2026 European research found sensory enjoyment remains central to indulgence, while more than half of Latin American consumers in its latest snack research identified flavour quality as the defining characteristic of indulgence.
Anne-Marie Roerink, president of 210 Analytics, adds another dimension. Her latest bakery research points towards smaller portions and more frequent eating occasions, but that doesn’t mean consumers are prepared to sacrifice pleasure. The successful snack still has to feel worth eating, whether that comes through flavour, texture, indulgence or simply feeling properly satisfied.
Health is increasingly shaping those smaller occasions, too. Roerink’s 2026 Bakery Playbook research, commissioned by the American Bakers Association, found around 90% of consumers agreed baked treats and snacks could provide a reward or escape, with remarkably little difference between people using GLP-1 medications and those who weren’t. GLP-1 households were changing how they ate, including opting for smaller portions and more frequent eating occasions, rather than simply abandoning baked foods.
Perhaps consumers aren’t demanding seven physiological promises after all. They may simply want a smaller snack that earns its place by being satisfying, enjoyable and nutritionally worthwhile.
If that’s the brief, another functional ingredient isn’t necessarily another benefit. Protein and fibre make intuitive sense together, while fibre and prebiotics fit naturally within digestive health. Protein alongside ingredients relevant to muscle maintenance can support a coherent healthy-ageing proposition.
Protein, fibre, probiotics, collagen, adaptogens, electrolytes, immunity and focus inside one snack, however, start to look less like product development and more like somebody emptied the wellness cupboard into the mixer.
When consumers need a decoder ring
Even when R&D pulls off the formulation, marketing still has to explain what the product actually does.
Consumers standing in front of a supermarket fixture aren’t peer-reviewing an ingredient deck, so the proposition needs to communicate what the product is, why they might want it and whether they expect to enjoy it within a very short decision window. A protein cookie or high-fibre cracker makes that job relatively straightforward, whereas a bar promising protein, gut health, energy, immunity, cognition, stress support and longevity asks shoppers to decide which of those benefits they’re actually buying.
Claim overload also creates regulatory and credibility problems. EU rules require health claims used on packaging, advertising and marketing to be scientifically substantiated and authorised, so adding collagen, probiotics or the latest fashionable functional ingredient doesn’t give manufacturers carte blanche to reproduce the promises circulating on social media.
More functionality can mean more cost as well. Premium proteins, specialist fibres, probiotics, collagen, adaptogens and vitamins can increase ingredient costs while introducing processing constraints, stability questions, masking requirements and shelf-life considerations. If a fourth functional benefit pushes up the retail price but barely changes purchase intent, successfully squeezing it into the formulation isn’t much of a commercial victory.
The question therefore isn’t simply whether consumers want more functionality. It’s whether every additional benefit is valuable enough to justify the technical, financial and communication burden it creates.
Has functional snacking become an arms race?
Protein isn’t the problem but assuming that adding protein to another familiar product automatically constitutes innovation increasingly is.
Fibre – increasingly touted as ‘the new protein’ and likely to gather further momentum into 2027 – could easily suffer the same fate. UK sales of fibre-based foods were already up 14.1% in the 26 weeks to late January 2026, according to NIQ, outpacing the 9.6% growth recorded for protein. As adoption grows, brands risk responding by pushing the numbers higher or bolting on another benefit, followed by another, until functional snacking becomes an arms race measured by how much can be fitted into one wrapper.
Product developers don’t have to compete on how many benefits they can cram into a wrapper. A better formulation brief should start with what job the snack is supposed to do and which benefits genuinely help it do that job. Each additional ingredient then has to earn its place: does the consumer value it enough to justify the cost and technical burden, can the benefit be communicated and substantiated credibly, and does it complement everything else already in the formulation?
Most importantly, after hitting every nutritional target, does the cookie still taste like a cookie people actually want?
A snack containing 20g of protein isn’t inherently better than one containing 10g, just as four functional benefits aren’t automatically more innovative than two. An ingredient that looks impressive in an innovation presentation adds little commercial value if consumers don’t understand why it’s there, won’t pay the resulting premium or dislike what it does to the product.
Protein has changed what consumers expect from everyday foods, and fibre, gut health, satiety and healthy-ageing propositions will push functional snacking further. But the opportunity isn’t necessarily to cram them all together. The next breakthrough may depend on something far less fashionable in product development: knowing when to stop.
