What GLP-1 Does, and Why it Matters in Perimenopause & Menopause

You have probably seen a lot of talk lately about GLP-1 and medications like Ozempic and Mounjaro.

While these medications are getting a lot of attention, the pathway they act on is not new. Your body produces GLP-1 naturally after you eat, and it helps regulate appetite, fullness, and blood sugar. Medications like Ozempic and Mounjaro work on this same pathway, but in a much stronger and longer-lasting way.

That is why this conversation is so interesting.

It reminds us that appetite is not just about willpower. Your body already has systems in place that help regulate hunger, fullness, and blood sugar after you eat, and your gut is a big part of that picture.

Why this matters in peri and menopause

Perimenopause and menopause can feel like a turning point when it comes to managing weight. You might notice weight creeping up around the middle, your energy feeling less predictable, or cravings becoming more persistent, even though you don't feel like you are doing anything differently.

Hormones obviously play a role, but so does your gut. Your gut is involved in appetite, fullness, blood sugar, and the way your body responds to food, which is one reason gut health deserves more attention at this stage of life.

What GLP-1 does

In simple terms, GLP-1 helps your body respond to food.

After you eat, it helps send signals of fullness, supports blood sugar control, and slows the rate food leaves your stomach, which can help you feel satisfied for longer after a meal.

So when people talk about GLP-1, they are talking about one part of your body’s natural appetite-regulation system.

This is also why it comes up in conversations about weight, because it plays a role in how hungry or satisfied you feel and how your body responds after eating.

Where your gut fits in

Your gut is not just there to digest food.

It is also involved in sending messages to the brain and body about hunger, fullness, and blood sugar regulation. That is one reason a well-fed gut can be so helpful.

When you regularly eat enough fibre, include a variety of plant foods, and build meals that are balanced and satisfying, you support the internal systems involved in appetite regulation.

That doesn't mean there is one perfect way to eat. But it does mean the way you eat can help support these systems. And for many women in peri and menopause, that is a far more useful place to focus than simply trying to eat less.

What this can look like

If you want to support your natural GLP-1 response and the broader systems involved in appetite regulation, try building meals that help you feel well nourished.

That might look like:

• including enough protein at meals (~20-30g, which might look like 100-150g chicken)
• eating more fibre-rich foods like legumes, vegetables, wholegrains, nuts, seeds, and fruit
• building more structure into the day so you are not skipping meals and then picking at whatever is around later
• adding gentle movement, like a short walk after meals, where you can

None of that is new, but it can make a meaningful difference.

When your meals do more of the heavy lifting, it often feels easier to feel more stable, more satisfied, and less at the mercy of constant hunger or cravings.

If you are already taking a GLP-1 medication

If you are already using a GLP-1 medication, make sure your nutrition is properly supported alongside it.

When your appetite drops off quickly, diet quality can drop too. That can make it harder to get enough protein, fibre, calcium, and other key nutrients.

This matters even more in peri and menopause, when muscle and bone health are already important. Rapid weight loss can make it harder to maintain muscle mass, and if intake drops too low, it can also affect the nutrients needed to support bone health.

This is where working with a dietitian can make a real difference.

The goal is not just weight loss. It is helping you maintain dietary adequacy, protect muscle, support bone health, and make sure the way you are eating is still working for your body long term.

The takeaway

GLP-1 is one part of your body’s natural appetite and blood sugar regulation system.

Medications that target this pathway work much more strongly and for much longer than your body’s own natural GLP-1 response. But that does not make food irrelevant.

The way you eat still matters, especially in peri and menopause, when body composition, appetite, blood sugar, gut health, and energy can all feel like they are changing at once.

So try keeping the long-term picture in mind. Because once the weight is gone, you still want to know your body is well nourished, your muscles are being protected, and your bones are staying strong for the future.