Over the past year, I’ve spent a lot of time talking to people taking GLP-1 medications. Some are just starting, some are months or years in, and everyone’s experience is different.

But I’ve noticed something interesting.

Many of the lessons I’m learning from my GLP-1 clients aren’t really about GLP-1s at all.

They’re lessons about nutrition, behaviour and our bodies that apply to all of us. I’ve certainly seen many of them play out in my own life.

GLP-1s haven’t created these lessons. They’ve put them under a magnifying glass.

Here are five that stand out.

1. Forget everything you know about dieting

Eat less. Skip meals. Cut the carbs. Count the calories. Fast longer. Ignore hunger. Be "good".

For decades, we’ve been taught that successful weight loss requires restriction and, to some extent, suffering. Somewhere along the way, eating less became synonymous with doing better.

And while the laws of thermodynamics still apply to all of us, the old “calories in, calories out” approach to weight loss is overly simplistic. Our appetite, hormones, metabolism, environment, behaviour and biology all influence what and how much we eat, and how our bodies respond. For many people, simply being told to “eat less and move more” has failed them time and time again.

GLP-1 medications give us a powerful new tool. And I think to make the most of that tool, we need to forget much of what we think we know about “dieting.”

When your appetite is already reduced, the challenge is no longer to see how little you can eat. It becomes:

How well can I nourish my body with the appetite I have?

That means shifting the focus away from deprivation and towards the quality of what you're eating.

Quality over quantity.

For some clients, letting go of decades of diet thinking is one of the biggest shifts of all.

2. Systems beat motivation

Most people already know a lot about being healthy.

They know vegetables are good for them. They know they should eat enough protein, move their body, get enough sleep and probably do some strength training.

Knowing isn't usually the hard part.

Doing it consistently is.

And motivation is a pretty unreliable way to make that happen.

This becomes particularly obvious on GLP-1 medication because one of the body's most powerful prompts to eat, hunger, may be dramatically reduced.

If you don't feel hungry, you can genuinely forget to eat.

If there's nothing suitable in the fridge, you might grab whatever is easiest.

If strength training only happens when you feel motivated, it's very easy for a week to pass without doing it.

That's why so much of coaching is about creating systems.

It might be planning your eating opportunities for the day, having a few reliable protein-rich foods in the fridge, setting a reminder to eat, preparing something ahead of a busy workday or having strength sessions in the diary.

These things aren't particularly glamorous.

But they work.

Motivation comes and goes. Good systems are still there when it does.

3. Eating enough protein is soooo much harder than it sounds

“Eat more protein.”

It sounds ridiculously simple.

Then you try consistently getting enough protein across an entire day.

It’s hard enough with a normal appetite. With a substantially reduced appetite, it can become genuinely challenging.

A piece of chicken at dinner isn't necessarily going to get you there.

Protein needs to be considered across the whole day. Eggs at breakfast. Greek yoghurt or cottage cheese. Fish, chicken, meat or tofu. Legumes, edamame, nuts and seeds. Smaller amounts from several foods can add up.

This is something I’ve become even more conscious of in my own diet. If I leave protein to chance, I don't necessarily eat enough either.

For someone taking a GLP-1, this becomes even more important because eating less overall means there is less room for foods that aren't contributing much nutritionally.

Sometimes a protein supplement can be useful too, particularly when appetite is very low. But wherever possible, I like to start by looking at the foods someone already enjoys and finding ways to get more protein into their day naturally.

Getting enough protein isn't about one enormous high-protein meal. It’s about building it into your day.

4. Muscle is damn hard to hang on to

This is something I think we need to talk about much more.

As we age, we're already fighting an uphill battle to maintain muscle. Add significant weight loss to the equation and protecting it becomes even more important.

Protein helps, but protein alone isn't enough.

Muscle needs to be used to be maintained.

Our bodies are remarkably good at adapting to what we ask of them. If we regularly challenge our muscles, we give the body a reason to maintain them. If we don't use them, particularly while losing weight, maintaining that muscle becomes harder.

That's why resistance and strength training need to be part of the weight-loss strategy, not something we decide to worry about once the weight has gone.

And this matters for so much more than appearance.

Muscle supports strength, movement, balance, metabolic health and our ability to remain active and independent as we get older.

Losing 20kg while becoming significantly weaker isn't the outcome I'd be aiming for.

The goal is not simply a lighter body. It’s a strong, healthy, capable one.

5. You have to eat to get the most from this

One of my clients recently made an observation that perfectly captured this lesson.

She'd noticed that when her usual routines fell over and she forgot to eat, or ate very little, those weren't necessarily the days she saw the results she expected.

Her realisation was essentially:

“I actually have to eat to lose weight.”

It sounds counterintuitive after a lifetime of being told that less food equals more weight loss.

But our bodies are incredibly clever.

When energy intake becomes very low for a sustained period, the body adapts. Energy expenditure can decrease, spontaneous movement can fall, and it becomes increasingly difficult to get enough protein and other nutrients to support muscle and overall health.

The answer isn't to force yourself to eat huge amounts of food.

It's to stop thinking that eating as little as humanly possible equals success.

I see a real light-bulb moment when clients begin to understand what's happening in their body.

Suddenly food isn't something they're trying to avoid.

It's something they're using strategically to support the outcome they want.

And when your appetite is substantially reduced, the food you do eat matters even more.

Make every bite count.

And actually, there’s a sixth thing...

Of everything I’ve learned, this might be the most important.

This is a golden opportunity.

For many people, GLP-1 medication does something that years, sometimes decades, of dieting never managed to do.

It turns down the food noise.

The constant thoughts about food. The cravings. The negotiations with yourself about whether you should or shouldn't eat something. The mental energy spent trying to control your appetite.

When that noise quietens, it creates space.

And I think what happens in that space matters enormously.

You can use it to learn a different way of eating.

You can build strength.

You can establish systems that make healthy choices easier.

You can start moving your body because of what you want it to be capable of, rather than simply because you're trying to burn calories.

You can begin to understand what actually makes you feel well.

And perhaps you can start thinking beyond the next five or ten kilos.

Who do you want to be at the end of this?

How do you want to eat?

How strong do you want to feel?

What do you want your body to be capable of?

What habits do you want to take with you into the next decade of your life?

GLP-1s can create an extraordinary window of opportunity to do things differently this time.

The medication can create the space.

What you build in that space is where things get really interesting.

And that's the work I love helping people with.