The Truth About “Stubborn Belly Fat” in Perimenopause: Why Collagen Isn’t the Fix You’ve Been Sold

Another one of those supplement adverts popped up on my newsfeed recently.

This time it was talking about belly fat in menopause. It started by explaining that there are two different types of fat, subcutaneous and visceral, and then quickly moved into why your “stubborn belly” is not your fault, cannot be fixed with diet or exercise, and is actually caused by your gut lining breaking down due to collagen loss. Conveniently, the solution was their collagen supplement.

Now, I completely understand why this kind of message lands. Because if you are in your 40s and your body feels like it has changed overnight, especially around your middle, it can feel confusing, frustrating, and at times quite disheartening. So when something comes along and says, “This is not your fault and here is the real reason,” it is very easy to lean in and listen. To be clear, part of that message is true, but not all of it.

The Truth About “Stubborn Belly Fat” in Perimenopause

Let’s start with the part that is grounded in reality.

There are two main types of fat in the body. Subcutaneous fat sits just under the skin. This is the softer fat you can pinch. Visceral fat sits deeper in the abdomen, around the organs.

Visceral fat is more metabolically active and, in higher amounts, is linked with certain health risks. That part is not up for debate.

Where things start to go off track is the claim that visceral fat cannot be influenced by nutrition or movement. That is simply not true. In fact, visceral fat is often more responsive to lifestyle changes than subcutaneous fat. It tends to be the first to reduce when the body is supported with consistent nutrition, strength-based movement, and overall lifestyle shifts.

So the idea that “nothing you do works” may feel true based on your experience, but it is not because your body is resistant or broken.

It is usually because the approach you have been given does not match what your body actually needs at this stage of life.

The Collagen and “Leaky Gut” Story

This is where the advert really leans into a compelling, and slightly bleak narrative.

It suggests that during menopause, you lose collagen, your gut lining starts to break down, toxins leak into your bloodstream, inflammation increases, and your body stores visceral fat as a protective response.

It sounds detailed. It sounds scientific. It sounds like someone has finally explained what is going on. But when we look at the evidence, this chain does not hold up.

Yes, collagen levels change as we age. But the idea that your gut lining is simply “falling apart” because of this is an oversimplification and is scaremongering.

Your gut is a complex, highly regulated system. It is not a wall that suddenly develops holes because collagen levels drop. The term “leaky gut” is also often used in a way that creates fear. While gut permeability can change in certain conditions, it is not the widespread, catastrophic issue it is often made out to be in marketing messages.

Most importantly, there is no strong evidence to show that this process is the main driver of fat gain around the middle during perimenopause.

“It’s Not What You Eat, It’s Your Gut”

Another part of this messaging that can feel oddly reassuring is the idea that food is not the issue. That you can eat very little, exercise regularly, and still not see changes because the real problem is internal damage.

Now, there is a small piece of truth here too. Severely restricting food, for example, eating very low calories, can absolutely leave you feeling tired, craving sugar, and stuck in a cycle that does not feel good. But that does not mean nutrition is irrelevant.

It is not a case of “you are eating too much” or “food does not matter at all.” It is about how you are nourishing your body consistently over time.

Can Collagen Supplements Fix This?

The product being promoted was a collagen supplement combined with vitamin C and probiotics, with claims that it could repair the gut, reduce inflammation, and lead to a reduction in visceral fat. Here is what we actually know.

Collagen is broken down into amino acids during digestion. It does not travel directly to your gut lining and “repair” it in the way the advert suggests.

There is some evidence that collagen may support skin and joint health, but there is very limited evidence that it has a meaningful impact on gut health in otherwise healthy individuals.

Vitamin C plays a role in collagen production in the body, but most people can get enough through food. It is not a magic addition that suddenly makes collagen supplements effective.

Probiotics can support gut health in certain contexts, but their effects are highly individual and strain-specific. They are not a guaranteed solution for inflammation or fat loss. There is no strong evidence to show that taking a supplement like this will reduce visceral fat.

What Is Actually Happening in Your Body

This is the part that often gets overlooked, and it matters.

During perimenopause, your body is going through a natural transition. Hormone levels shift, muscle mass can gradually decline, with age, sleep can become disrupted and stress may feel harder to manage.

All of these factors influence how your body stores fat, how your energy feels, and how your appetite is regulated. So when you notice changes around your middle, it is not random, and it is not because you have suddenly started doing everything wrong.

It is your body responding to a combination of internal changes and the demands of daily life.

What Actually Helps (Without Restriction or Quick Fixes)

Instead of looking for one product to “fix” everything, shift your focus to supporting your body in a way that is realistic and sustainable.

That might look like:

• Building meals around protein, aiming for around 30g at main meals

• Including fibre-rich foods to support digestion and blood sugar balance

• Eating regularly to reduce energy dips and cravings

• Moving your body in a way that includes strength, alongside cardio

• Supporting sleep and recovery where possible

This is not about doing everything perfectly. It is about small, consistent shifts that add up over time.

The Red Flags to Watch For

When you come across messages like this, it can be helpful to pause and ask a few questions.

• Is this blaming one single cause for a complex issue?

• Is it telling you that nothing you have tried works at all?

• Is it positioning a supplement as the missing piece?

• Is it using personal stories instead of clear evidence?

• Is there a sense of urgency to buy?

These are all signs that you are being marketed to, not supported.

The Truth About “Stubborn Belly Fat” in Perimenopause

You are not broken, your body is not failing and you do not need to fix yourself with a supplement.

What you are experiencing is a normal shift that deserves understanding, patience, and the right kind of support.

When you move away from restriction and quick fixes, and towards nourishment over punishment and consistency, things can start to feel more stable, more manageable, and far less overwhelming.

You Don’t Have to Do This Alone

If you are feeling confused by all the conflicting advice out there, and you want a space where things actually make sense, you are so welcome to join my Facebook group, Kicking Perimenopause in the Arse. It is a supportive, honest space where women share, learn, and feel understood without judgement.

No quick fixes. No guilt. Just real conversations and practical support that you can actually use with like minded women who get it. Click here to join.