New Research on Weight Loss Injections: Do you need them for life?

If you've been following the news about Mounjaro and Wegovy, you've probably seen some headlines recently about what happens when people stop taking them. Let's talk about it—and more importantly, let's talk about how you can set yourself up for long-term success, whether you're currently on the jabs, thinking about them, or planning your next steps.

What the Latest Research Tells Us

A major new study published in the British Medical Journal looked at what happens when people stop taking weight loss medications like semaglutide (Wegovy) and tirzepatide (Mounjaro). The Oxford University researchers analysed 37 studies involving over 9,000 people, and the findings were eye-opening.

People who stopped taking these medications regained weight at around 0.8kg per month—returning to their starting weight in approximately 18 months.

But here's where it gets interesting: people who built healthy eating habits kept weight off for nearly four years. That's more than double the time.

The message? These medications are brilliant at kickstarting weight loss, but lasting results come from combining them with sustainable habits you can maintain for life.

Why Meal Replacements and Weight Loss Injections Work So Well Together

If you're currently on Mounjaro or Wegovy, you've probably noticed your appetite has changed. You're less hungry, food doesn't call to you the way it used to, and you're naturally eating less. That's the medication doing its job.

But here's the thing: this is the perfect time to build habits that will serve you long after the injections stop.

Meal replacements make the most of your reduced appetite. When you're not battling hunger, it's easier to be intentional about what you eat. A delicious shake or a satisfying ready meal gives your body exactly what it needs—high protein, 20+ vitamins and minerals—without the temptation to overeat. You're training yourself to feel satisfied with proper portions.

They take the guesswork out of nutrition. Weight loss injections help control your appetite, but they don't automatically ensure you're getting the right nutrients. Meal replacements are designed to be nutritionally complete, so even when you're eating less, your body isn't missing out.

You're building a routine you can stick with. The habits you form now are the ones you'll carry forward. If you get used to grabbing a quick, tasty shake for breakfast or having a convenient meal when life gets busy, that habit doesn't disappear when your prescription ends.

Convenience matters when your appetite is unpredictable. Some days on the jabs, you barely want to eat at all. Having portion-controlled, nutrient-packed options means you're still fuelling your body properly, even when cooking a full meal feels like too much.

Your Secret Weapon for Life After the Jabs

Here's what the research really highlights: the people who maintain their weight loss long-term are those who've built sustainable eating habits. And this is exactly where meal replacements shine.

When you stop taking Mounjaro or Wegovy, your appetite will return. That's not a failure—it's simply your body going back to normal. The question is: what habits will be waiting for you?

Use meal replacements as your maintenance toolkit. You don't need to rely on them for every meal forever. But having them as part of your routine—a shake for breakfast, a soup for lunch when you're busy, a bar when you need a satisfying snack—gives you structure without restriction.

They help you stay in control when hunger returns. After months of reduced appetite, feeling properly hungry again can be overwhelming. Knowing you've got quick, delicious options that keep you full and nourished takes the panic out of it.

Flexibility is everything. Maybe you'll have a meal replacement for breakfast and lunch, then a balanced dinner. Maybe you'll use them a few times a week when life gets hectic. Maybe they'll be your go-to after an indulgent weekend. There's no rigid plan—just tools that work around your life.

The cost makes long-term use realistic. Weight loss injections can cost £175-£300 a month. Meal replacements from just £1.95 a meal? That's a maintenance strategy you can actually afford to keep up.

A Practical Plan: Before, During and After

While you're on the injections:

Use meal replacements to maximise your results while your appetite is naturally suppressed

Focus on protein-rich options to protect your muscle mass (this matters more than people realise during rapid weight loss)

Build the habit of structured, portion-controlled eating

Enjoy the variety—shakes, soups, bars, ready meals—so healthy eating never gets boring

When you're ready to come off:

Transition gradually, keeping meal replacements as anchors in your day

Use them strategically for your most vulnerable moments (rushed mornings, busy workdays, evenings when cravings hit)

Remember: you've already proven you enjoy these foods. That makes sticking with them easy.

For ongoing maintenance:

Keep meal replacements as part of your regular routine—not as a diet, but as convenient, nutritious options you genuinely enjoy

Use them to course-correct after holidays, celebrations, or periods where you've relaxed your eating

Trust the habits you've built. You've got this.

The Bottom Line

Weight loss injections like Mounjaro and Wegovy are powerful tools—there's no denying that. But the research is clear: long-term success comes from the habits you build alongside them.

Meal replacements aren't about restriction or punishment. They're about making healthy eating easy, delicious, and sustainable—exactly what you need both during treatment and long after it ends.

At Shake That Weight, we've helped over 500,000 people find an approach that actually works for real life. Our meals taste amazing (seriously—rich, creamy, satisfying), they're packed with everything your body needs, and they cost less than your morning coffee run.

Whether you're using them to supercharge your results on the jabs or building your maintenance plan for the future, we're here for every step of your journey.

Because this isn't about a quick fix. It's about finding a way of eating you can enjoy for life.

#enjoythejourney

This article is for general information only and doesn't replace medical advice. Always speak to your GP or healthcare provider about weight loss medications and what's right for you.