“Your metabolism didn't slow down. It quit.”
That is what it feels like, isn't it? You are eating the same things you did at 45, but the weight is creeping up, your clothes feel tighter, and your afternoon energy is dipping. It is incredibly frustrating to feel like your body has simply packed its bags and given up on you.
But I need to be completely honest with you: your metabolism hasn't actually quit. If it had, you would be very ill.
What has actually happened is much more practical, entirely normal, and—most importantly—much more fixable than a "broken" metabolism. Let’s look at what is really going on behind the scenes, and how you can gently coax your body back into a good rhythm.
The Myth of the "Crashed" Metabolism
We often blame our age for a sudden metabolic crash. It is true that our basal metabolic rate (the energy your body uses just to keep your heart beating and lungs breathing) drops slightly as we get older. But recent studies show this drop is much smaller than we used to think.
If your metabolism isn't broken, why does it feel like it is? The answer usually comes down to two quiet culprits: muscle loss and invisible stillness.
Culprit Number One: The Muscle Factor
Muscle is metabolically active tissue. Simply put, muscle burns calories just by existing.
As we move through our 50s and 60s, we naturally lose muscle mass if we aren't actively doing anything to maintain it. This is a normal part of ageing, but it means your body is burning fewer calories at rest than it did a decade ago. You haven't lost your metabolism; you have just lost some of the engine that drives it.
Culprit Number Two: "Invisible" Stillness
Think about your daily movement ten years ago compared to today. You might still go for your daily walk or hit the gym twice a week, but what about the rest of the day?
We tend to unconsciously move less as we age. We take the lift instead of the stairs. We sit while reading the paper instead of pacing. We drive to the local shops instead of walking. This daily, low-level movement is called Non-Exercise Activity Thermogenesis (NEAT). When our NEAT drops, our daily calorie burn drops with it. Again, your metabolism hasn't quit; it has just adapted to a quieter life.
The Good News: You Can Rebuild the Engine
Because this isn't about a "broken" system, you don't need a drastic fix. You don't need fad diets, starvation routines, or exhausting cardio sessions. You just need to give your body the right signals to rebuild its engine.
1. Prioritise Protein
As we age, our bodies become less efficient at processing protein. Aim to include a good source of protein (like eggs, fish, lean meat, beans, or Greek yoghurt) at every meal. This gives your body the building blocks it needs to maintain and repair muscle.
2. Add Gentle Resistance
You do not need to become a bodybuilder. Simple resistance exercises—using light dumbbells, resistance bands, or even just your own body weight—tell your body to hold onto its muscle.
3. Reintroduce "Incidental" Movement
Look for small ways to break up your sitting time. Stand up to take a phone call. Park a little further away from the supermarket entrance. Do a quick tidy-up of the kitchen after dinner. These tiny movements add up significantly over the course of a week.
You Are Still in the Driver's Seat
It is easy to feel defeated when the rules of our bodies seem to change without our permission. But understanding the reality of what is happening takes the power back. Your metabolism is still there, working hard for you. It just needs a little more muscle and a little more movement to thrive in this new chapter of your life.
One Small Step
The Kettle Squat. Tomorrow morning, while the kettle is boiling for your tea or coffee, do 10 slow sit-to-stands from your kitchen chair. Keep your chest up and push through your heels. It takes less than a minute, but it sends a vital "keep the muscle" signal to your body before your day even begins.