Losing Weight on GLP-1 Medications? Here’s What You Need to Know About Protecting Your Strength

Weight loss can feel like a win.

The scales go down, clothes fit better, and for many people, it’s the first time in a long time that things feel like they are moving in the right direction.

But there is something we are seeing more often in the clinic lately and it’s worth talking about.

People are losing weight…

but they’re also losing strength.

The Part No One Talks About: Muscle Loss

Medications like GLP-1s (commonly used for weight loss and diabetes management) can be incredibly effective.

But weight loss doesn’t just come from fat.

Research suggests 15–40% of weight lost can be muscle (lean tissue)

That matters more than most people realise.

Because muscle isn’t just about how you look, it is about how your body functions every day.

Why Muscle Matters (More Than the Number on the Scales)

Your muscles play a big role in:

• Strength and physical capacity

• Balance and fall prevention

• Metabolism and energy use

• Independence as you age

When muscle drops, we often see:

• Feeling weaker or more fatigued

• Reduced confidence moving

• More aches, pains, or injuries

• Slower long-term progress

For some, especially those already managing injuries or chronic conditions, this can quietly lead toward frailty and reduced independence over time.

So… Should You Stop the Medication?

Not at all.

These medications have an important role when prescribed and managed properly.

But they’re not the whole picture.

The best outcomes happen when weight loss is supported by:

• The right exercise

• Enough protein

• A plan that considers your body, your history, and your goals

How to Protect Your Strength While Losing Weight

This is where we come in as Exercise Physiologists.

Our role is not just to “get you moving", it is to guide the right type of movement for your body.

Here’s what actually helps:

1. Strength Training (Not Just Walking)

Walking is great for general health, but it is not enough to maintain muscle on its own.

You need targeted resistance training to:

• Stimulate muscle

• Maintain strength

• Support metabolism

2. Enough Protein (Often More Than You Think)

To maintain muscle during weight loss, aim for:

1.2–1.5g of protein per kg of body weight per day

This helps your body continue building and maintaining muscle, even while losing weight.

3. A Plan That Fits You

No two people respond the same way to medication or exercise.

That is why we focus on:

• Your current strength and function

• Any injuries or conditions

• Your confidence and experience

• What you actually enjoy and can stick to

How We Support You at Foundation Allied Health

We are seeing more and more people come in saying:

Our approach is simple and supportive:

• Start where you are at

• Build strength safely

• Help you feel capable again

We’ve developed a GLP-1 Support Program to help people:

✔ Maintain muscle

✔ Improve strength

✔ Stay active and independent

✔ Get better long-term results from their weight loss

A Quick Word From Us

If you are on this journey, you are already doing something positive for your health.

Our job is not to change that, it is to support you through it.

To make sure that as the weight comes down…

your strength, confidence and quality of life don’t go with it.

Frequently Asked Questions

Do I need exercise if I’m already losing weight on medication?

Yes. Weight loss alone does not guarantee better strength or function. Exercise, particularly strength training, helps maintain muscle and improve long-term outcomes.

Is walking enough while on GLP-1 medications?

Walking is a great start, but it is usually not enough to maintain muscle. A structured strength program is important to protect your body during weight loss.

How often should I be doing strength training?

For most people, 2–3 sessions per week of targeted strength training is enough to maintain and build muscle.

What if I feel weak or have low energy while losing weight?

This is common. It may be linked to reduced muscle mass, lower calorie intake, or both. A tailored exercise and nutrition plan can help manage this.

Can Exercise Physiology help if I have injuries or chronic conditions?

Absolutely. That is exactly where we work best, tailoring programs around your body, your limitations, and your goals.

Do I need a referral to get started?

No, you can come in privately, or we can work with your GP if you have a Medicare plan or are being medically managed.

Ready to Feel Strong While You Lose Weight?

If you’re currently on or considering weight-loss medication, we would love to help you do it the right way.

Foundation Allied Health, Lawson (Blue Mountains)

Call 0466 344 866

Or reach out to book a time to chat