7 Hormones That May Be Affecting Your Weight During Perimenopause and Menopause

If you've been eating well, staying active, and still finding it difficult to lose weight, you're not imagining it.

Many women notice that their bodies respond differently during perimenopause and menopause. Weight may increase, particularly around the abdomen, and the strategies that worked in the past may no longer have the same effect.

While nutrition and exercise remain important, they're only part of the picture.

Hormones play a significant role in regulating appetite, metabolism, body composition, and how your body stores and uses energy. Understanding how they work can help explain why weight changes during midlife and guide a more personalised approach to care.

Insulin and Insulin Resistance in Menopause

Insulin helps move glucose from your bloodstream into your cells to be used for energy.

When your body becomes less responsive to insulin, known as insulin resistance, it can become more difficult to regulate blood sugar and maintain a healthy weight.

Some women may also experience increased cravings, energy fluctuations, or weight gain around the abdomen.

How we can help:

If appropriate, we may assess your metabolic health and recommend strategies to improve insulin sensitivity through nutrition, movement, and lifestyle changes. For some women, medical weight management options, including GLP-1 medications, may also be considered as part of an individualised treatment plan.

Cortisol: The Stress Hormone Behind Menopause Belly Fat

Cortisol is essential for helping your body respond to stress, but when stress becomes ongoing, it can influence sleep, appetite, energy levels, and metabolic health.

Poor sleep and chronic stress may also make healthy lifestyle changes feel much harder to maintain.

How we can help:

Supporting stress management, improving sleep quality, and addressing lifestyle factors can all play an important role in improving overall wellbeing during perimenopause and menopause. 

Oestrogen and Menopause Weight Gain

Changing oestrogen levels are one of the main reasons body composition changes during perimenopause and menopause.

Many women notice increased fat storage around the abdomen, alongside a gradual loss of muscle mass.

These changes can also affect metabolism, insulin sensitivity, bone health, and cardiovascular health.

How we can help:

Where clinically appropriate, hormone replacement therapy (HRT) may help manage menopausal symptoms. Alongside this, nutrition, strength training, and healthy lifestyle habits remain important for supporting long-term metabolic health.

Testosterone: More Than a Male Hormone

Although present in much smaller amounts than in men, testosterone also plays an important role in women's health.

It contributes to muscle strength, energy, bone health, sexual wellbeing, and overall body composition.

How we can help:

If clinically indicated, testosterone may be considered as part of a comprehensive menopause management plan for carefully selected women. Strength training and adequate protein intake also help support muscle mass and healthy ageing.

Thyroid Hormones, Metabolism, and Menopause

Your thyroid helps regulate many of your body's everyday functions, including metabolism and energy production.

An underactive thyroid can sometimes contribute to symptoms such as fatigue, weight changes, dry skin, constipation, and feeling unusually sensitive to cold.

Because some thyroid symptoms overlap with menopause, it's important not to assume they're caused by hormones alone.

How we can help:

If your symptoms suggest an underlying thyroid condition, appropriate assessment and investigation can help determine whether treatment is needed.

Ghrelin: The Hunger Hormone

Ghrelin is one of the hormones involved in regulating appetite.

Poor sleep, irregular eating patterns, and other lifestyle factors can influence hunger signals, making it more difficult to feel satisfied after meals.

How we can help:

Improving sleep, building balanced meals with adequate protein and fibre, and developing sustainable eating habits can all help support healthy appetite regulation. For some women, medical therapies may also be appropriate.

Leptin and Feeling Full

Leptin helps signal to your brain when you've had enough to eat.

Over time, excess body fat and metabolic changes can reduce the body's sensitivity to leptin, making it harder for these signals to work effectively.

Like many aspects of weight regulation, leptin is only one piece of a much larger picture.

How we can help:

Supporting metabolic health through nutrition, movement, sleep, and personalised medical care can help improve overall health and support sustainable weight management.

Looking Beyond Individual Hormones

While each of these hormones plays an important role, it's rarely just one hormone that's responsible for weight changes.

Sleep, stress, nutrition, muscle mass, medications, genetics, thyroid health, insulin sensitivity, and the hormonal changes of perimenopause and menopause all interact.

That's why we don't focus on one hormone in isolation.

Instead, we take the time to understand your symptoms, medical history, lifestyle, and health goals so we can develop a personalised plan that's right for you.

A Personalised Approach to Weight and Metabolic Health in Menopause

At My Menopause Clinic Australia, we understand that weight management during midlife is about much more than eating less or exercising more.

Our approach focuses on understanding the whole picture and providing evidence-based, personalised care that supports your hormones, metabolic health, and long-term wellbeing.

Depending on your individual needs, your care plan may include:

• A comprehensive assessment of your symptoms and health history
• Investigation of factors contributing to changes in weight and metabolic health
• Nutrition and lifestyle strategies tailored to your goals
• Support to preserve muscle mass and improve body composition
• Hormone replacement therapy (HRT) or medical weight management options, where clinically appropriate
• Ongoing support as your health needs change over time

Frequently Asked Questions

Why is it harder to lose weight during menopause? Falling oestrogen, insulin resistance, elevated cortisol, and changes in thyroid function, ghrelin, and leptin all affect metabolism and fat storage during perimenopause and menopause, making weight loss more difficult than it was before.

Which hormone causes the most weight gain in menopause? There isn't one single hormone responsible - oestrogen decline, insulin resistance, and cortisol are among the most significant contributors, but they interact with sleep, stress, and lifestyle factors too.

Can HRT help with menopause weight gain? HRT isn't a weight-loss treatment, but by addressing declining oestrogen it can help manage symptoms linked to body composition changes. It's most effective as part of a broader, personalised plan.

Understanding Your Body Is the First Step

If you're finding it harder to manage your weight than you used to, you're not alone.

The changes you're experiencing may be influenced by much more than diet and exercise alone.

By understanding your hormones, metabolic health, and the other factors affecting your wellbeing, you can make informed decisions about the support that's right for you.

Book a consultation today to explore your options and develop a personalised plan that supports your health through perimenopause, menopause, and beyond.