Dec 24th, 2025

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Ep 460 - Should I Take Weight Loss Injections Like Mounjaro or Ozempic?

[00:06]
Last week, a friend of mine sent me an article from The Times in the UK. The headline said something along the lines of: “Drug users told to lift weights or risk aging by 10 years.”

[00:21]
Obviously, it’s a great headline. But at the same time, there’s a lot of truth behind it. The article referenced research compiled by UK Active, where they looked at people losing weight on weight-loss drugs.

[00:33]
What they found was pretty alarming: around 50% of total weight loss was coming from lean body mass, not fat.

[00:43]
What doctors and UK Active are really pushing is this: if you’re going to use drugs like Mounjaro, Ozempic, or any other weight-loss injection, you must pair them with strength training and adequate protein intake.

[01:02]
Without those two things, your risk of losing lean body mass goes through the roof.

[01:07]
Now, this becomes a bigger issue when you look at who typically uses these drugs. Most people drawn to weight-loss injections are over 30, 40, or 50 — sometimes even in their 60s.

[01:16]
After 30, muscle mass naturally declines if you don’t actively do something about it.

[01:27]
So when you add a weight-loss injection into the mix — where weight loss is driven by calorie restriction — but you don’t strength train or manage protein intake, the result isn’t just weight loss.

[01:44]
You lose strength.
You lose mobility.
Frailty increases.

[01:50]
And according to the research, the impact is roughly equivalent to aging yourself by about 10 years.

[01:57]
Now, the exact numbers don’t matter as much as the message.

[02:01]
If you’re thinking about using weight-loss injections like Mounjaro or Ozempic, you must pair them with strength training, protein intake, and a full lifestyle approach.

[02:17]
So in today’s podcast, I want to break down what’s actually going on with weight-loss drugs — how they work, whether they work, and what you need to consider if you’re thinking about using them.

[02:32]
This is especially relevant right now because it’s the time of year when a lot of people start considering “the jabs.”

[02:44]
And I want to make sure that if you are thinking about it, you’re approaching it with the right perspective.

The Weight-Loss Drug Industry

[02:50]
The weight-loss drug industry is going absolutely mental.

[02:54]
It’s expected to reach $400 billion by 2030, which is insane growth.

[02:57]
And it’s not surprising. You inject a drug and experience rapid weight loss — it feels like the holy grail.

[03:04]
It’s similar to using Xanax for anxiety. Instead of doing the psychological work, you take a pill and feel better.

[03:17]
The problem is, there’s no identity shift.

[03:20]
As soon as you come off the drug, weight rebound is likely — just like coming off a diet without changing habits.

[03:42]
That doesn’t mean weight regain only happens with drugs. It happens with any diet if the underlying behaviors don’t change.

How Common Are These Drugs?

[04:03]
Around 1.5 million people in the UK are currently using weight-loss drugs.

[04:08]
In the US, by mid-2024, roughly 1 in 7 or 1 in 8 adults had either used or tried them.

[04:23]
There are also new drugs constantly coming to market.

[04:33]
I recently saw another article about something called PYY-based drugs, which target appetite hormones differently from Ozempic or Mounjaro.

[04:57]
These drugs aim to suppress appetite and may have longer-lasting effects even after stopping — though they’re still in early stages.

How Do Weight-Loss Drugs Work?

[05:39]
Most weight-loss drugs fall under GLP-1 receptor agonists.

[05:44]
They were originally designed to treat type 2 diabetes.

[05:49]
They cause weight loss mainly by:
• Suppressing appetite
 • Reducing food noise
 • Slowing digestion

[06:19]
When you feel full longer and think less about food, weight loss happens quickly — without much effort.

Do They Work?

[06:33]
Yes. Absolutely.

[06:34]
Most people lose 15–25% of their body weight, which is huge.

[06:43]
But here’s what they don’t do.

[07:01]
They don’t build muscle.

[07:03]
They don’t build habits.

[07:07]
And without strength training, up to 50% of the weight lost can be muscle, which is never a good thing.

[07:16]
That’s why around two-thirds of people regain the weight within a year after stopping.

Other Downsides

[07:24]
There are side effects — nausea being one of the most common.

[07:35]
They’re also expensive. In many cases, costs range from $1,000 to $1,600 per month.

[08:17]
And there’s still stigma, although that’s reducing as usage becomes more common.

Who Are These Drugs For?

[08:52]
I’m not anti-drugs — but I am anti-using drugs when you don’t need them.

[08:57]
If you’re morbidly obese and have 70–100+ pounds to lose, they can be a useful kickstart.

[09:06]
But if you only have 20–60 pounds to lose, I don’t think they’re worth it.

Real-World Example

[09:17]
One of our clients lost 41 kg. She used GLP-1s to kickstart her journey and is now completely off them.

[09:33]
That’s the goal. Most people don’t want to be on these drugs forever.

[09:44]
The only way to come off successfully is by building structure.

What Actually Works Long-Term

[10:09]
You need:
• Sleep
 • Hydration
 • Protein
 • Strength training
 • Routine
 • Accountability

[10:37]
Otherwise, you’ll come off the drugs, regain the weight, and become another statistic.

[11:10]
GLP-1s can help you lose weight — but they cannot change your identity.

[11:14]
And identity is what determines whether weight stays off.

Final Summary

[11:39]
If you’re morbidly obese and struggling with food noise, weight-loss drugs may help kickstart progress.

[11:45]
But if you use them, you must do the work in parallel — strength training, nutrition, and lifestyle change.

[11:59]
Otherwise, they become an expensive habit with poor long-term results.

About RNT Fitness

[12:06]
If you’re a high-performing professional who’s been stuck in cycles of yo-yo dieting, all-or-nothing thinking, and inconsistency, this is your moment to change it.

[12:18]
At RNT Fitness, we help busy people get into the best shape of their lives — and actually stay there.

[12:24]
No extremes. No guesswork. Just a proven, structured transformation system built around your lifestyle.

[12:36]
Book a free strategy call to see what your personalized roadmap would look like.

Next Steps

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  2. Find out if you’re ready for a transformation:
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