The humble byproduct of cheesemaking has become the star of the proteinmaxxing boom, but surging demand is raising questions about supply and sustainability. For generations, families like the Meives clan in Wisconsin made cheese. Today, Tony Meives runs a company selling whey protein powder — the watery leftover his grandfather once threw away. “Twenty years ago, the only people who took whey were bodybuilders,” Meives says. “Over the past five years, the market has really opened up to each and every type of person you can probably think of.”
The Rise of Proteinmaxxing
According to a 2025 survey of 3,000 US adults, 71% said they were trying to eat more protein, up from 59% in 2022. This cultural shift, dubbed “proteinmaxxing,” has driven whey protein from a neglected waste stream to a prized co-product. “It’s a byproduct no longer,” says Joshua White, vice-president of dairy ingredients at Missouri-based dairy marketer TC Jacoby & Co. “Whey is a co-product now.”
You can see the victory parade in every supermarket aisle: breakfast cereals, frozen foods, even iced lattes have been souped up with extra protein. Not even traditional “junk foods” such as nacho chips, microwave ramen, and pretzels are safe. “A lot of different brands are on the protein bandwagon,” Meives adds. “They’re putting it in everything.”
From Waste to Gold: How Whey Is Made
As keen readers of Little Miss Muffet may recall, whey is produced during cheesemaking. Enzymes are added to dairy milk, causing the desirable curds to separate from the watery liquid called whey. Prior to the protein boom, leftover whey was often used as feed or fertilizer, or reprocessed into soft cheeses like ricotta (which takes its name from the Italian word for “recooked”).
To make whey powder, liquid whey is filtered to remove fats and carbohydrates, then purified, evaporated, and spray dried. The result is a versatile, high-protein ingredient that can be added to nearly any food product. Even the ancient Greek medic Hippocrates prescribed whey serum around 460 BC to fortify immune systems — proving the ingredient’s longevity.
Is Demand Too High?
The booming demand has created a supply chain challenge. With protein being added to everything from bread to soda, dairy processors are struggling to keep up. The US dairy industry produces millions of tons of whey annually, but the race to “proteinmaxx” every product may outpace production capacity. Some experts warn that over-reliance on whey could lead to price spikes and environmental strain.
Meanwhile, consumers are paying a premium for protein-fortified goods. A 2025 market analysis showed that protein-enhanced foods cost 20–40% more than their standard counterparts. This raises questions about equity and access: is the protein boom only for those who can afford it?
The Future of Whey
Despite these concerns, the trend shows no sign of slowing. US Health Secretary Robert F Kennedy Jr recently declared that “the war on protein is over,” signaling official endorsement of high-protein diets. Innovations in whey processing and alternative protein sources (like plant-based isolates) may help stabilize supply.
For now, whey protein remains a star ingredient — but the dairy industry must balance profit with sustainability. As Meives notes, “The market has really opened up to each and every type of person.” The question is whether the supply can keep up with that universal appetite.
Key Takeaways
- 71% of US adults now actively seek more protein, up from 59% in 2022
- Whey has transformed from a waste product to a high-value co-product
- Protein-fortified foods cost 20–40% more than standard versions
- Supply chain pressures may lead to price increases and environmental concerns
Frequently Asked Questions
What is whey protein?
Whey protein is a byproduct of cheesemaking. When enzymes are added to milk, curds form for cheese, and the leftover liquid is whey. It is then filtered, dried, and turned into a powder rich in protein.
Why is whey protein so popular now?
The “proteinmaxxing” trend has driven demand. More people are adding protein to their diets for muscle building, weight management, and overall health. Food manufacturers are also adding whey to everyday products like cereals, lattes, and snacks.
Is there enough whey protein for everyone?
Supply is under pressure. While the US dairy industry produces large amounts of whey, the rapid increase in demand — especially for protein-fortified foods — could lead to shortages and higher prices. Alternative protein sources are being explored to ease the strain.
