The Top 27 Diet Trends of 2025

Carnivore and ketovore

Among the many elimination diets gaining traction, the carnivore diet stands out for its extreme simplicity: all animal products, no plant foods. No fiber, no carbs, no exceptions.

Its appeal lies largely in its clarity. For those exhausted by food tracking, ingredient labels, or rotating restriction cycles, carnivore offers a single, unambiguous rule. The diet typically consists of beef, eggs, salt, and water — a regimen that’s either viewed as liberating or severe, depending on who you ask.

Reddit threads and niche forums are filled with personal accounts: reduced bloating, clearer skin, fewer autoimmune flare-ups. These claims are largely anecdotal, but the volume and consistency of testimonials have contributed to its staying power. Many followers say they arrived at carnivore after trying multiple other diets with limited results.

The rise of carnivore also taps into a broader undercurrent of distrust toward mainstream dietary guidelines. With decades of conflicting advice around fat, cholesterol, and processed foods, many consumers now view self-experimentation as more reliable than expert consensus. For this group, personal outcomes carry more weight than institutional approval.

Whether it’s seen as a therapeutic tool or dietary overcorrection, carnivore reflects a growing appetite for radical simplicity — and a willingness to rewrite the rules of modern eating.

Gut health

Once confined to fiber ads and probiotic yogurt labels, gut health has expanded into something much bigger: a wellness frontier with implications for the brain, mood, metabolism, and more.

What’s driving it isn’t just digestive discomfort—it’s the emerging science around the gut-brain axis. Researchers have found that the microbiome plays a role in regulating neurotransmitters like serotonin and dopamine, leading to new theories about how diet can influence anxiety, depression, and even cognition. That idea—food as a mental health tool—has captured public attention.

Consumers aren’t just adding kombucha or kefir for digestion anymore. They’re reaching for fiber-rich snacks and prebiotic sodas with the hope of improving focus, sleep, and emotional balance. Interest in gut health has become so widespread that it now also ranks among the top supplement trends.

Reddit threads and wellness forums are filled with stories from people who tried everything—therapy, medication, meditation—before adjusting their diet and seeing unexpected mental shifts. Whether those results are placebo or biochemically grounded, they’re real enough to drive behavior.

As wellness continues to merge with neuroscience, the digestive tract has quietly become a site of self-optimization.

High protein

Protein has moved from the margins of bodybuilding culture to the center of the grocery store. Once reserved for powders and bars sold in specialty shops, it now shows up in cereals, chips, and even ice cream—rebranded for everyday life, not just the gym.

Much of the momentum comes from health-conscious consumers looking to simplify. Protein carries a health halo that spans goals: weight loss, muscle maintenance, blood sugar stability, and even aging well. Unlike fat or carbs, it’s rarely villainized. It’s functional, familiar, and increasingly built into routine foods.

Weight management plays a central role. High-protein foods are consistently linked to satiety—helping people feel full with less. This effect isn’t just theoretical; many consumers report that protein-heavy meals reduce the urge to snack and make calorie tracking feel less like a chore.

Convenience is also critical. The rise of high-protein snacks—grab-and-go yogurts, jerky, RTD shakes—caters to people who want healthier options without cooking or planning. It’s food that fits into time-strapped routines without compromising on health goals.

Importantly, the audience has expanded. Once targeted at athletes and dieters, high-protein foods are now marketed to office workers, parents, older adults, and Gen Z shoppers who see protein not as a performance booster, but as a daily baseline, leading it to become one of the top diet and nutrition trends.

Low-FODMAP

For a growing number of people, digestive issues aren’t just occasional—they’re chronic. The low-FODMAP diet, originally designed for IBS, eliminates certain fermentable carbs to reduce symptoms like bloating and discomfort. Clinical studies show up to 86% of IBS patients report improvement, a rare level of efficacy in nutrition science.

What started as a medical protocol has gone mainstream. Many now adopt the diet without a diagnosis, using it to identify food triggers and take control of their gut. On Reddit and in health forums, users share DIY success stories—relief after years of unexplained issues.

Part of the diet’s appeal is its logic: remove, reintroduce, and personalize. It’s not meant to be followed forever, but to reveal what’s quietly causing problems. That structure, paired with its effectiveness, fits neatly into the broader obsession with gut health—one of the top supplement trends.

Meal replacement shakes

For many consumers these days, time is the ultimate currency. And while meal replacement shakes have been around since the 1950s, it's the marketing that has shifted to focus on productivity that has given this category a comeback.

Back then, meal replacement products were marketed with great success as weight-loss tools — today’s iterations are marketed instead as healthy meal alternatives to productivity-minded professionals and on-the-go consumers. Metrecal, which led the craze half a century ago, likewise used convenience as a selling point, encouraging customers in one ad to keep the cans in their car’s glove box.

Today’s other category leader, Soylent, first sold itself as the non-food of choice for too-busy-to-eat Silicon Valley workers, but it’s now facing a rising tide of competition.

Huel says its customers include doctors, students, and shift workers on top of fitness buffs and efficiency-obsessed tech executives. The focus is on offering "nutritionally complete" meals rather than low-calorie products — a message that mirrors the broader trends in health and wellness over weight loss.

Related is the growth of snacking trends as consumers aim to eat enough without spending as much time in the kitchen.

Ozempic and semaglutide

Ozempic, originally developed for diabetes management, rapidly transitioned into a popular weight loss solution for individuals ranging from severely obese to, more recently, mildly overweight — becoming one of the standout TikTok diet trends in the process. Ozempic's widespread adoption mirrors the rise of Botox in becoming a quietly ubiquitous treatment and will likely continue to climb as one of the top trends in healthcare.

Demand for weight gain products

There’s a supply and demand mismatch—and thus a market opportunity—in the business of helping people reach their ideal weight; but not with weight loss. In fact, Google queries for "how to lose weight" overshadow those for “how to gain weight” by only 6:1. However, the weight loss industry is far more than 6x more competitive and saturated than the weight gain industry: in fact, there are almost 3,000% more apps for losing weight than gaining it.

Companies like Noom, with 45 million users, have been able to build up a large following by helping users lose weight. The company uses an effective signup flow which encourages users to set a deadline, such as a wedding they’ll be attending or even just “summer”, which helps the app not only tune the weight loss program, but also the email drip campaigns. Noom’s focus, though, is exclusively on losing weight—even if users sign up and express the intention to add a few pounds of muscle, the signup workflow uses copy about weight loss.

The weight-gaining market is not only more ripe for opportunity but also more fragmented than the weight-loss market. Some customers are trying to add muscle mass and look for products like whey protein, which continues as one of the trends in fitness. Others want to add weight more generally, and they increasingly turn to appetite-stimulating supplements or weight-gain syrups.

Some of these products are carb- and vitamin-rich meal shakes that just add extra calories to diets, but some of them include medications that are used off-label to stimulate appetite. These weight-gaining shakes have health risks, and are often marketed illegally.

Media attention often drives new diet trends. When celebrities were mediated through magazines, TV, and movies, they tended to be thinner, but many popular influencers have a different body type—one popular weight gainer brand, "slim thicc," is named after the body type exemplified by Kim Kardashian, Nicki Minaj, and other celebrities. With more diverse celebrity body types, there's a wider dispersion in diet products that allow people to achieve them.

Personalized nutrition

With more consumers having access to personalized health data, including allergy profiles, DNA, and sleep patterns, the demand for customized nutrition solutions is growing. Consumers are using this detailed information to seek diets that cater specifically to their unique biological and lifestyle needs, making personalization one of the most promising new diet and nutrition trends.

Personalization is also growing in markets like beauty, where skin analyses are emerging as one of the fastest-growing skincare trends.