If you’ve walked through a supermarket lately, you may have noticed that some grocery categories look very different than they did just a few years ago. New protein products seem to appear every week. Functional beverages are taking over more shelf space. Fresh prepared meals continue expanding, while private-label products have become more sophisticated than ever.

Does that mean Americans have stopped buying traditional grocery staples?

Not at all.

The bigger story is that consumers are becoming far more selective about what they buy. Rather than abandoning entire categories, shoppers are prioritizing foods they perceive as offering greater nutritional value, convenience, freshness, or functionality. That shift is changing which products grow fastest—and which are gradually losing momentum.

According to the latest research from McKinsey, grocery sales continue to grow primarily because of pricing, not higher unit volumes, while consumers are actively reducing impulse purchases, comparing prices more carefully, and increasingly choosing foods that deliver specific health benefits.

Here are five grocery categories that are losing ground to changing consumer preferences.

1. Traditional Breakfast Cereal

Cold cereal remains one of America’s iconic breakfast foods, but it no longer dominates the morning meal.

Many consumers—particularly Millennials and Gen Z—are replacing sugary cereals with higher-protein alternatives like Greek yogurt, cottage cheese, eggs, protein shakes, overnight oats, and breakfast sandwiches.

This isn’t necessarily because cereal has become unpopular. Rather, breakfast has become more functional. Consumers increasingly want foods that provide longer-lasting satiety, higher protein, and better overall nutrition.

Circana reports that cereal sales have softened as manufacturers work to reinvigorate the category through innovation and product reformulation, while retailers continue allocating more space to protein-focused breakfast options.

Why cereal is losing momentum

• Growing interest in high-protein breakfasts
• More grab-and-go options
• Changing morning routines
• Greater emphasis on satiety and nutrition

2. Sugary Soft Drinks

Traditional carbonated soft drinks remain a massive business, but they’re no longer the unquestioned leaders of the beverage aisle.

Consumers increasingly seek beverages that deliver additional benefits beyond refreshment.

Sparkling waters, electrolyte beverages, probiotic drinks, protein beverages, ready-to-drink teas, and other functional beverages continue gaining shelf space as shoppers look for hydration, energy, gut health, or added nutrition.

McKinsey found that nearly half of consumers now prioritize specific functional benefits—such as high protein or low sugar—over broad health claims. Younger shoppers especially over-index on protein, gut health, and energy.

Why sugary beverages are losing momentum

• Consumers are reducing added sugar
• Functional beverages continue expanding
• Hydration has become a wellness category
• Younger shoppers increasingly seek beverages with health benefits

3. Traditional Processed Snack Foods

Americans haven’t stopped snacking.

They’re simply becoming much more selective.

According to Circana, both traditional snacks and better-for-you snacks continue generating sales, but consumers increasingly expect snacks to provide some type of nutritional value in addition to convenience.

Protein bars, roasted nuts, meat snacks, popcorn, yogurt, fruit snacks, and high-protein packaged snacks continue outperforming many traditional indulgent products.

Rather than replacing snacks altogether, consumers are increasingly asking, “What does this snack do for me?”

Why traditional snacks are losing momentum

• Protein has become a purchasing priority
• Consumers increasingly read nutrition labels
• Functional ingredients influence purchasing decisions
• Better-for-you snack options continue expanding

4. Shelf-Stable Convenience Meals

During the pandemic, shelf-stable meals experienced a surge in demand.

Today’s shoppers still value convenience—but they increasingly prefer fresh convenience.

Prepared foods, refrigerated meal kits, deli entrees, grab-and-go meals, and premium frozen offerings continue attracting consumers looking for restaurant-quality meals with minimal preparation.

McKinsey reports that 61% of consumers purchase grocery-prepared meals at least monthly, while 94% of grocery executives say fresh and prepared foods play a significant role in customer loyalty. The report also notes that prepared-food purchases continue to increase as supermarkets compete directly with restaurants for meal occasions.

Why shelf-stable meals are losing momentum

• Fresh prepared foods continue expanding
• Grocery retailers are investing heavily in foodservice
• Consumers increasingly associate freshness with quality
• Refrigerated and frozen premium meals have improved dramatically

5. Traditional Diet Foods

For decades, grocery marketing revolved around “low fat,” “diet,” and reduced-calorie products.

Today’s consumers approach nutrition differently.

Instead of simply counting calories, shoppers increasingly look for foods that deliver specific outcomes, including higher protein, better gut health, lower sugar, more fiber, and cleaner ingredient lists.

McKinsey’s latest consumer research found that functional nutrition has become a primary purchase driver, while GLP-1 medications are further accelerating purchases of fresh foods and high-protein products while reducing purchases of sugary beverages and indulgent snacks in many households.

Why traditional diet foods are losing momentum

• Protein has overtaken calorie reduction as a key purchase driver
• Consumers increasingly prioritize ingredient quality
• Functional nutrition has become mainstream
• Wellness messaging has evolved beyond “diet” products

Frequently Asked Questions

Are these foods disappearing?

No. Every category on this list remains worth billions of dollars annually. The trend is not disappearance—it’s slower growth relative to emerging categories such as protein-rich foods, functional beverages, fresh prepared meals, and premium private-label products.

What foods are growing the fastest?

Industry research consistently points to strong growth in:

• High-protein foods
• Functional beverages
• Greek yogurt
• Cottage cheese
• Fresh produce
• Prepared meals
• Premium private-label products
• International flavors

Why are consumers changing their shopping habits?

Several factors are influencing grocery purchases, including inflation, health awareness, GLP-1 medications, demand for convenience, increased interest in protein, and greater focus on fresh and minimally processed foods. Consumers are also becoming more intentional about how they spend their grocery dollars.

Are younger shoppers driving these trends?

Yes. Millennials and Gen Z are often the earliest adopters of health-focused, functional, and globally inspired foods. However, many of these purchasing habits are now spreading across all age groups as retailers expand assortment and consumers place greater emphasis on wellness.

Key Takeaways

• Consumers aren’t abandoning traditional grocery categories—they’re becoming more selective.
• High-protein foods, functional beverages, and fresh prepared meals continue outperforming many legacy categories.
• Convenience remains essential, but shoppers increasingly prefer fresh convenience over pantry convenience.
• Functional nutrition is replacing traditional “diet” messaging.
• Retailers are reshaping store assortments to reflect long-term consumer preferences rather than short-term fads.

The grocery industry isn’t witnessing the decline of food categories as much as the evolution of consumer priorities. Today’s shoppers increasingly want foods that help them feel healthier, save time, or deliver greater value. For grocery retailers and manufacturers, understanding those shifting priorities may be just as important as tracking prices or market share.