The Truth About Menopause and Mounjaro for Weight Loss

Have you recently noticed changes in your weight despite eating healthy and living an active lifestyle?

Menopause and perimenopause-related weight gain could be the problem, which is something many women have to deal with.

With the majority of people living online these days, menopause and the growing interest in Mounjaro in recent years have become some of the most searched topics when it comes to women’s health. While eating fewer calories and being more physically active can support some people with weight management, it’s not a one size fits all case.

Mounjaro has become increasingly widely used across the UK, but a lot of women still have questions. Is it safe to take during menopause? How does it sit alongside your hormones, and does it still work if you’re on HRT? This guide walks through what you need to know before deciding.

What Is Mounjaro?

Mounjaro (Tirzepatide) is a prescription weight-loss treatment given as a once-weekly injection, using a pre-filled pen, usually starting at 2.5mg. It works by sending signals to your brain when you’re full and helps to control hunger and blood sugar levels. This means you feel fuller for longer, your stomach empties more slowly, and your body uses insulin more effectively, helping to reduce appetite and support weight loss.

This weight loss drug was first approved by the US regulator, the FDA, for type 2 diabetes in May 2022, and then in the UK, the MHRA approved it for diabetes later the same year, and authorised it for weight management in November 2023.

Why Do Women Gain Weight During Menopause?

Weight gain is something that many women experience for different reasons, and menopause is often one of them. Losing weight during this period requires special efforts because it is a hormone-related issue.

Low oestrogen production leads to fat redistribution, so visceral fat (the kind that surrounds internal organs) accumulates around the waist. Moreover, muscle mass declines with age, thereby slowing metabolism and reducing the number of calories burned even when doing nothing.

It’s not uncommon for some women to experience insulin resistance during menopause, as the body stores glucose from carbs as fat instead of using it. Other factors can also come into play, such as disrupted hormones, poor sleep, stress and appetite changes, which can then prevent women from maintaining their pre-menopause weight.

One often overlooked factor in menopause weight gain is cortisol, your body’s main stress hormone. During menopause, hormonal changes can make your body more sensitive to stress. At the same time common symptoms like poor sleep, anxiety and mood changes can cause cortisol levels to stay elevated. Increased cortisol levels can result in increased fat storage especially around the abdomen, triggering cravings for high-sugar high calorie foods. Cortisol does make it harder for your body to burn fat efficiently, creating a cycle that is difficult to break.

Can Mounjaro Help With Menopause Weight Gain?

Yes, Mounjaro can help because it cuts hunger, and the amount of calories you are eating and drinking. It also improves your metabolism and targets insulin resistance, which is a major driver of menopausal gain. However, you should know that Mounjaro does not treat menopause and has no effect on hot flushes, hormones or the transition to menopause itself.
In other words, Mounjaro works best when your weight gain is caused by links to high BMI or a condition like type 2 diabetes.

Can You Take Mounjaro During Menopause?

Yes, you can under the guidance of a menopause specialist. Although not every woman experienced menopausal symptoms will be eligible because there are specific criteria to meet. For many women, they may turn towards Mounjaro to see if it can shift the so-called “menopausal belly” and whether it helps with menopausal fat.

You may be suitable if you have a BMI of 30 or above, or a BMI of 27 or above alongside a weight-related health condition such as type 2 diabetes, high blood pressure, high cholesterol, sleep apnoea, or cardiovascular disease.

Is Mounjaro Safe for Menopausal Women?

Mounjaro is generally considered safe for women when prescribed by a menopause specialist and used as directed. Common side effects, mostly within the first few weeks, include nausea, constipation, diarrhoea, indigestion and reduced appetite.

Other risks can also be present but are rarer, including gallstones, pancreatitis, dehydration, and renal disorders. Women with certain thyroid diseases (personal or familial) may require additional evaluation and discussions with the menopause specialist.

Menopause Symptoms vs Mounjaro Side Effects

While most Mounjaro side effects are relatively harmless, there are some that are rare and require further examination and treatment.

Mounjaro does not affect hot flushes and night sweats, these are typical menopause symptoms and do not have to stop taking your medication. Symptoms like nausea, constipation, and diarrhoea are likely to be caused by Mounjaro.

If you are unsure about your symptoms, then it’s advisable to contact Menoclinic rather than stopping Mounjaro abruptly.

Mounjaro and HRT: Can You Take Them Together?

Yes, it is common to use them both together in the UK. Studies suggest that Mounjaro with HRT can improve weight loss significantly. A research study at ENDO 2025 shows that Mounjaro plus HRT averaged 17% body weight loss versus 14% for Mounjaro alone. Due to Mounjaro affecting the stomach emptying the British Menopause Society advises transdermal HRT such as patches, gels or sprays rather than tablets as the absorption and effects on the body are not impacted.

The Muscle Loss Problem Nobody Talks About

Most of the conversations focus on fat loss and do not consider the impact on muscle mass. Research shows rapid weight loss can lead to a reduction in both body fat and lean muscle tissue, which is particularly relevant during menopause.

As oestrogen levels decline women experience changes in body composition, including loss of muscle mass and bone mineral density. These changes increase the risk of fragility, reduced strength and osteoporosis over time.

Protecting muscle health should therefore be an important part of weight-management plan. Eating adequate protein, typically 20-25g per meal and incorporating resistance –based exercise at least two to four times per week can help preserve muscle mass, maintain strength and support long-term bone health.

What Results Can Women Expect?

Tirzepatide produced an average loss of 15 to 22% of body weight over 72 weeks at the higher dose in clinical trials, but some patients did actually lose more.

Although results can differ, these are typically based on the dosage, consistency, diet, exercise routine, quality of sleep, alcohol consumption, stress, pre-existing conditions, and many other factors.

Not everybody experiences an impressive weight loss, yet the results women will typically expect are a reduction in appetite and gradual weight loss if consistent with the recommended plan.

What Happens When You Stop Mounjaro?

Regaining weight after stopping Mounjaro is common, so having a long-term maintenance plan in place before stopping is highly recommended.

Pros and Cons of Mounjaro for Menopause Weight Loss

Here is an honest look at Mounjaro for menopause weight loss to help you weigh up whether it is the right option for you.

Pros of Mounjaro for Menopause Weight Loss

• Reduces appetite and cravings
• Can provide substantial weight loss
• Helps insulin sensitivity and blood sugar
• Works alongside HRT
• Targets the metabolic side of menopausal weight gain

Cons of Mounjaro for Menopause Weight Loss

• Side effects are common and can be managed
• Can be expensive treatment in the long term
• Risk of muscle loss without protein and strength exercises
• Weight regain is likely without a plan
• Does not reduce or support menopause symptoms

Mounjaro works best as part of a structured plan rather than on its own. Women often see the best results when combined with:

• The right HRT plan
• Strength training and protein intake
• Good sleep and stress management
• Ongoing medical support

When to Get Medical Help

Contact your menopause specialist, GP or seek urgent medical help if you experience:

• Severe or ongoing abdominal pain
• Persistent vomiting or signs of severe dehydration
• Gallbladder signs: upper right abdomen pain, fever, and yellowing of skin
• Pancreatitis signs: severe pain radiating to the back and vomiting
• Allergic reaction: swelling, rash, trouble breathing
• Unusual vaginal bleeding while on HRT

Always check with your menopause specialist before stopping Mounjaro.