January in Britain is a peculiar season. The gym car parks fill up, the fruit bowls look newly washed, and half the country starts drinking something fluorescent in the belief it will fix Christmas. But fresh data suggests a familiar pattern is still in charge: the quick-fix diet trend.
More than a third of adults—37%—say they’ve fallen for diet “fads” in an effort to stay healthy. And while 43% of UK residents set health-related New Year’s resolutions, a sizeable chunk admit they don’t last: 42 per cent say they fail to stick with them. Another 37% report their diets and resolutions don’t deliver long-term health benefits, which is a polite way of saying the results don’t hang around once real life gets a vote.
Not everyone is chasing extremes. In fact, many people are trying to make healthy living easier and more realistic—just with a modern twist.
The numbers paint a picture of a nation experimenting:
- Around 24% have signed up to a food and meal-kit delivery service to help make meals healthier.
- About 43 per cent are adding more functional drinks to daily life, including vitamin-packed juices and protein smoothies.
- A majority—59%—are aiming to eat more fruit and vegetables.
- Roughly 30 per cent are boosting protein-rich foods as part of a healthier lifestyle.
That’s the sensible end of the pool. At the deeper end, some are cannonballing in.
Extreme Fitness, Celebrity Supplements, and the Weight-Loss Noise
Nearly a quarter of UK adults (24%) are trialling extreme fitness regimes and challenges for the new year, including extreme marathons. Meanwhile, 22 per cent say they’re spending money on celebrity-endorsed vitamins and supplements.
All of this is happening in a world where “choice” doesn’t always feel like freedom. Almost half—44%—say maintaining a healthy lifestyle can feel daunting because there’s simply too much out there. Four in ten (41%) report feeling more pressure than ever to lose weight, driven by online personalities and weight-loss injections such as Mounjaro. And 71% admit that misinformation online makes a healthier lifestyle feel complicated and confusing to navigate.
If you’ve ever searched “best diet” and emerged three hours later convinced you should eat only eggs on odd-numbered days, you’ll know exactly what that feels like.
Dr Frankie Phillips: When Everyone Is Shouting, Keep It Simple
Award-winning dietitian and public health nutritionist Dr Frankie Phillips says the research reflects the tug-of-war many people feel when trying to improve health.
“This research highlights just how easy it is for people to feel pulled in different directions when it comes to health and wellbeing.
“While quick fixes, extreme challenges and celebrity-backed solutions may seem appealing, they’re rarely sustainable and often add to the sense of pressure and confusion, resulting in disappointment. The most effective approach is still the simplest one — focusing on realistic, evidence-based habits, such as starting the day with a vitamin C packed fruit juice, rather than chasing short-term results.”
In other words: if the plan requires superhuman discipline, it’s probably not a plan—it’s a dare.
Dr Frankie’s Top 5 Tips for Staying Fit and Healthy in 2026 and Beyond
Build strong foundations
Eat a balanced mix of fruit and veg, lean protein (eggs, fish, pulses, chicken) and wholegrains to support everyday energy and health.
Think small, win big
Skip extreme plans. Small, realistic tweaks to what you eat and how you move are easier to stick to—and add up over time.
Hydrate smart
Water isn’t everyone’s first choice so hydrate smarter with a 100% orange juice which provides potassium – an electrolyte vital for optimal muscle function – and vitamin C.
Add, don’t restrict
Focus on what you can include—more fruit and veg, fibre-rich beans and pulses, and enjoyable ways to move—rather than cutting foods out.
Trust the experts
Ditch the fads and follow advice from qualified health professionals who prioritise evidence-based, sustainable habits over quick fixes.
And her final point lands where most people actually live: in the realm of what’s doable on a Wednesday.
“Small, consistent changes to diet, movement and mindset are more realistic, and far more likely to lead to lasting benefits in 2026 and beyond.”
The Bottom Line: A Diet That Fits Your Life Beats One That Fights It
The story here isn’t that ambition is bad. It’s that the all-or-nothing approach tends to end in… nothing. If your diet is built like a punishment, it will eventually be treated like one—avoided, resented, and abandoned.
The steadier route is far less glamorous, which is precisely why it works: eat more plants, include enough protein, hydrate in ways you’ll actually maintain, move your body in ways you don’t dread, and treat online “miracles” with the suspicion they deserve.
Because the best diet isn’t the one that looks impressive in a screenshot. It’s the one you can still do when the novelty has gone and the calendar no longer says January.
