The Perimenopause Weight Gain No One Warned Us About

Woman over 40 stretching in workout clothes

Understanding Hormones, Metabolism, and What Actually Helps

If you’ve found yourself staring at your wardrobe wondering when your jeans got so tight, know this: you’re not alone. One of the most common (and quietly frustrating) changes women talk to us about is weight gain in midlife. It can feel like it arrives overnight, just as everything else starts to shift too.

In our 2025 Women’s Health & Happiness Study, we heard something loud and clear: 62% of midlife women feel under-informed about how menopause affects their metabolism.

And that gap in knowledge doesn’t just impact our physical wellbeing. It weighs on us emotionally. We often hear things like: “I haven’t changed a thing, but nothing seems to work anymore.”

That feeling makes sense. Because something has changed. Not your commitment or your character, but your biology.

What’s Really Happening in Perimenopause

Let’s break down the shifts that often start during perimenopause and continue into menopause.

1. Hormonal Changes 

Oestrogen, progesterone and testosterone begin to fluctuate, which can impact:

  • How your body stores fat
  • Your appetite and cravings
  • Quality of sleep
  • Stress response
  • Insulin sensitivity

One key shift is fat distribution. As oestrogen declines, fat is more likely to settle around the abdomen instead of the hips or thighs. This is a hormonal pattern, not a sign your efforts aren’t enough.

2. Metabolism

Slows Down Even if your habits haven’t changed since your 30s, your resting metabolism likely has. You’re burning fewer calories at rest, even with the same diet and activity level.

3. Loss of Muscle Mass

From around age 40, we naturally lose 3 to 8 percent of muscle per decade. Since muscle helps fuel your metabolism, less muscle means fewer calories burned.

4. More Stress, More Cortisol

Midlife often carries a heavier mental load. Cortisol, the stress hormone, can remain elevated. When it does, it encourages fat storage, particularly around the middle.

5. Sleep Disruptions

Night sweats, early waking, anxiety - all common in midlife - can throw hunger and blood sugar regulation out of balance. Poor sleep isn’t just exhausting, it makes healthy habits harder to maintain.

Why Old Advice Doesn’t Work Anymore

We’ve all heard it:

“Eat less.”

“Do more cardio.” “

Cut calories.”

But when your body is shifting, those tactics often do more harm than good. In fact, they can:

  • Slow your metabolism further 
  • Spike cravings 
  • Lead to muscle loss 
  • Raise cortisol 
  • Exacerbate hormonal symptoms

The truth is that perimenopause requires a gentler, more strategic approach. One that works with your body, not against it.

What Actually Helps During Perimenopause

Here’s what research and experience show can truly support your body in this season:

1. Strength Training

This is one of the most powerful tools for midlife women.

Strength work helps:

  • Rebuild and maintain muscle 
  • Boost metabolism 
  • Balance blood sugar
  • Support hormone health
  • Improve confidence and mood

And no, you don’t need to live at the gym. Just two sessions a week can make a meaningful difference.

2. Prioritising Protein

Many women aren’t getting enough protein, especially in the morning, which can lead to:

  • More hunger
  • Energy crashes
  • Muscle loss
  • Slower recovery

Aim for a mix of sources (including 50 percent from plants) and spread protein across all meals. This helps stabilise energy and supports muscle repair.

3. Managing Stress (Really Managing It)

This goes deeper than occasional self-care. True stress support might look like:

  • Breathwork or meditation 
  • Sleep routines 
  • Boundaries around time and energy 
  • Whole food nutrition 
  • Smart supplementation
  • Gentle exercise that restores instead of depletes

When stress hormones like cortisol come down, weight can stabilise more easily.

4. Supporting Hormonal Balance

This might include:

  • Quality sleep 
  • Reducing alcohol and sugar 
  • Eating healthy fats 
  • Herbal or nutritional support 
  • Strength-focused movement

Small tweaks in daily habits can make a noticeable difference in how you feel and how your body responds.

5. Understanding Your New Baseline

Your body is not misbehaving, even if it feels like it. It’s adapting. And it’s asking for different support. This isn’t about going backward. It’s about evolving forward.

The Emotional Side of Weight Changes

We hear this time and again. Weight gain in midlife doesn’t just change how clothes fit…it can affect:

  • Confidence 
  • Identity 
  • Energy 
  • Libido
  • Body image

But here’s what we want you to know:

You are allowed to feel unsettled and hopeful. Your beauty is still here. So is your power. This chapter asks us to meet our bodies with more kindness and curiosity, not criticism.

Midlife can be a return to ourselves, not a retreat from who we were.

Let’s focus on what’s real. Evidence-based strategies rooted in compassion, not restriction.

We believe:

  • Education empowers
  • Strength is more than physical
  • Joy belongs at every age
  • Women deserve clarity and community

This is about coming home to yourself, with support, not shame.

In Summary

Midlife weight gain is a normal, manageable part of hormonal change. With the right tools: strength training, nourishing food, stress support, and hormonal care, you can rebuild energy, confidence and connection with your body.

You haven’t lost anything. You’re learning something new. And we’re with you every step.