Whey protein has become a mainstream food and beverage staple, transcending its historical space in the sports supplements aisle and making its way into virtually every food and beverage category, from breakfast cereal to RTD coffee. But with demand accelerating across sports nutrition, functional foods, GLP-1-focused products and everyday high-protein options, the industry is facing a fundamental question: can supply keep pace? FoodBev’s Leah Smith reports.

For decades, whey was largely viewed as a secondary output of cheesemaking – but thanks to the protein boom, this has changed dramatically. Advances in filtration and processing have transformed whey from a relatively low-value byproduct into a premium protein ingredient used across infant formula, clinical nutrition, sports nutrition and an expanding range of mainstream food and beverage products.

That transformation has helped create the conditions for the current market squeeze. Demand for whey protein has surged as protein consumption has become a mainstream nutritional priority, while supply remains constrained by the industry's reliance on cheese production and specialised processing capacity.

According to DCA Market Intelligence, food-grade whey powder prices in north-west Europe have risen to approximately €1,700 (£1,469) per tonne, more than 50% higher than at the beginning of 2026. Highly concentrated whey products have experienced an even sharper increase, with Whey Protein Concentrate 80% (WPC80) and Whey Protein Isolate 90% (WPI90) prices reaching record levels.

Vesper data puts the scale of the increase into sharper perspective: the price of a tonne of WPC80 rose from £4,302 in June 2023 to £23,751 in June 2026.

The result is a market where manufacturers are increasingly having to consider not simply the cost of whey, but whether they can secure enough of it.

Protein moves into the mainstream

The surge in whey demand cannot be attributed to one trend alone.

Protein has moved well beyond the traditional sports nutrition aisle, appearing in ready-to-drink beverages, snacks, cereals, bakery, dairy products and convenience foods. This broadening of demand has fundamentally changed the competitive landscape for whey. Once largely associated with athletes and bodybuilders, the ingredient is now being used to address healthy ageing, weight management, satiety and everyday nutrition.

Karsten Smet, CEO of ACI Group, said protein demand is now being driven by several overlapping consumer groups.

“Proteinmaxxing has undoubtedly accelerated interest in high-protein foods, but only as part of a much broader conversation,” he said. “We are seeing demand driven by healthy ageing, active lifestyles, GLP-1 users looking to maintain lean muscle mass, and the mainstream adoption of protein-fortified foods and beverages.”

For formulators, whey remains particularly attractive because it combines high-quality protein with functionality. It contains all nine essential amino acids and is easily absorbed by the body while also offering properties such as solubility, emulsification and favourable sensory performance. That combination makes replacing whey more complicated than simply finding another source of protein.

The GLP-1 effect

One of the most significant new demand drivers is the rapid expansion of GLP-1 weight-loss medications.

Drugs such as Wegovy and Mounjaro suppress appetite, meaning users can consume substantially fewer calories. As a result, nutrition has become an increasingly important consideration, with protein intake playing a key role in helping preserve lean muscle mass during weight loss.

In today’s market, there are three distinct layers of protein demand: an established base comprising infant formula, clinical nutrition and sports nutrition; a growing GLP-1 user base; and the broader cultural shift towards ‘protein everywhere’.

The GLP-1 cohort is particularly significant because consumers taking these medications are often looking for concentrated sources of nutrition that can fit into a reduced appetite. That creates a natural opportunity for whey protein, particularly highly concentrated ingredients such as WPC80 and WPI90.

The trend could also accelerate further as oral GLP-1 treatments broaden access. Oral formulations have the potential to reach consumers who have been reluctant to use injectable treatments, potentially expanding the population for whom protein-rich, nutrient-dense products become increasingly relevant.

However, GLP-1s are not solely responsible for surging costs. Sports nutrition growth, inventory cycles, mainstream protein consumption and product innovation are also contributing to demand, making it difficult to isolate how exactly increasing GLP-1 usage is impacting supply. 

Supply cannot simply switch on

Perhaps the biggest challenge facing the whey market is the inability to respond quickly to rising demand.

“There are definitely clear constraints,” ACI’s Smet said. “Whey is a co-product of cheese production, so increasing supply depends on broader dairy production rather than demand for whey alone.”

Processing capacity presents another bottleneck. According to Expana Markets, limitations in ultrafiltration and drying infrastructure are restricting the industry's ability to respond rapidly to increased demand. New processing facilities require significant capital investment and lengthy development cycles, creating a lag between market demand and additional supply.

Luis Cubel, managing director of Arla Foods Ingredients, said: “All global whey protein producers are running at or very close to maximum capacity. But the fact remains that global market demand is still outpacing supply.”

From byproduct to strategic ingredient

The economics of whey have also changed alongside its role in the food industry.

“Whey is moving from a byproduct to an ingredient with active demand,” said Wouter Baan, dairy market analyst at DCA Market Intelligence. “As a result, pricing is becoming less volume-driven and more influenced by functional applications.”

That shift is particularly visible in the difference between conventional whey powder and high-purity protein concentrates.

DCA reports that standard whey powder containing around 11% protein has increased by more than 50% since January of this year, while concentrated products containing up to around 90% protein have climbed to approximately €20,000 per tonne over the past year.

Global financial services expert Stone X has observed that processors are increasingly maximising whey protein isolate (WPI) and WPC80 output while reducing emphasis on lower-value streams such as WPC34 and sweet whey powder. In effect, limited processing capacity is being directed towards products capable of generating the greatest returns.

That dynamic can make the market feel even tighter for manufacturers looking for particular grades.

Who gets the whey?

As whey becomes more expensive and availability tightens, competition between end markets is likely to intensify.

Sports nutrition remains one of the largest sources of demand, but it is increasingly competing with functional nutrition, RTD beverages, high-protein snacks, meal replacements, dairy products and everyday foods.

Arla Foods Ingredients' Cubel identified functional nutrition, including sports nutrition, as the leading source of demand growth, alongside increasing requirements from medical and infant nutrition.

Expana's Jose Saiz similarly points to functional foods, clinical nutrition, protein fortification and GLP-1-related nutrition as important sources of structural demand growth.

For manufacturers, this means procurement is becoming more strategic. Companies that previously treated whey as a readily available commodity ingredient may now need to secure volumes further in advance.

ACI’s Smet noted that manufacturers are likely to place “greater emphasis on securing protein supply and building additional flexibility into their formulations”, particularly as sustained price increases make reliance on a single ingredient source increasingly risky.

Diversifying proteins

The obvious response to a whey shortage is substitution, but this is easier said than done.

Whey's appeal goes beyond its protein content. It contributes to texture, solubility, emulsification and finished-product performance, meaning replacing it can affect both nutritional and sensory characteristics. As a result, manufacturers are increasingly looking towards protein blends, rather than one-for-one replacements.

Nico Koch, product marketing manager proteins EMEA at ADM, said protein diversification is becoming an important strategy, with manufacturers exploring complementary sources such as soy protein isolate.

“Proteinmaxxing has increased demand for different protein sources, including whey protein,” he said. “This is prompting many brands to explore reformulation strategies that incorporate complementary protein sources, such as soy protein isolates, to help manage supply, cost and formulation flexibility.”

ADM’s own data suggests consumers are receptive to this approach, with 68% globally interested in blended or hybrid protein foods and beverages, while 86% believe it is healthier to obtain protein from a wide variety of sources.

For manufacturers, a whey and plant blend could therefore provide a means of reducing exposure to whey prices without eliminating the ingredient completely.

Other options include casein, milk protein concentrate, lower-grade WPC34 and ultra-filtered milk, depending on the application. Forward-contracting and securing supply earlier are also becoming increasingly important strategies. The current market disruption could therefore accelerate a change that was already underway: the move towards more diversified protein systems.

Soya is one candidate. ADM’s Koch pointed to the plant-based protein’s complete amino acid profile and processing performance as reasons why it can work alongside whey in products where manufacturers need to balance nutritional quality, cost and functionality. Pea and other plant proteins are also being explored, although whey retains advantages in areas such as solubility, taste and functional performance.

This means a wholesale replacement of whey is unlikely across all applications. Instead, substitution is more likely to be selective. Manufacturers with price-sensitive products may increase the proportion of plant proteins, while applications where whey functionality or nutritional performance is critical may continue to prioritise dairy proteins.

As Koch put it, manufacturers are likely to pursue a combination of strategies rather than look for “a single replacement”.

A structural shift rather than a temporary spike?

The critical question for the industry is whether today's elevated whey prices represent a temporary market imbalance or the beginning of a fundamentally different protein economy.

John Lancaster, head of EMEA dairy & food consulting at Stone X, argued that the latter may be closer to reality.

“What we're seeing is less a supply story and more a demand transformation, with protein moving firmly into the mainstream across food, beverage and health markets,” he said.

That does not necessarily mean prices will continue rising indefinitely. Additional processing capacity is already coming online, with further investment expected through late 2026 and 2027. But this new capacity is currently being absorbed by continued demand growth, rather than creating a substantial surplus.

As supply expands, it may therefore prevent further price spikes rather than return the market to the low-cost whey environment of the past. Whey is unlikely to ever return to its former role as a relatively inexpensive by-product.

The immediate challenge is therefore not simply finding enough whey; it is finding ways to build products and supply chains that remain commercially viable when whey is expensive or unavailable. That could mean securing longer-term contracts, investing in formulation flexibility, using blended protein systems or redesigning products around alternative dairy and plant proteins.

It’s clear that whey protein demand is no longer confined to a specialist market, and whey supply cannot expand at the same speed. For demand to be met, a more strategically managed market will be needed, where procurement, formulation and product development become increasingly interconnected.