Want to talk to a nutritionist? Call 480-435-3557

Why Am I Not Losing Weight On Mounjaro? 6 Possible Reasons

Key Takeaways

  • A lack of weight loss on Mounjaro can be attributed to a variety of factors, such as a high caloric intake, a lack of activity, underlying health conditions, and more.
  • Mounjaro works to promote weight loss by suppressing appetite and regulating blood sugar, helping to reduce your calorie intake so you lose weight.
  • Although Mounjaro suppresses appetite, it is important to still be mindful of your eating habits to support your medication regimen.
  • To improve your weight loss progress, consider implementing holistic wellness practices like adjusting your diet, incorporating mindful eating practices, and increasing your physical activity.

Table of Contents

Reasons for Stunted Weight Loss on Mounjaro

Mounjaro is a popular weight loss medication that works to restrict appetite, but it may not have the same effects and success for everyone. If you’re not losing weight on Mounjaro, it could be the result of a variety of factors, from eating too high-calorie foods to not getting enough exercise.

A common misconception while taking Mounjaro is that the medication should suppress your appetite, and the pounds should start falling off. However, it’s important that you support your Mounjaro journey by also eating nutritious whole foods and making healthier lifestyle choices like getting active and managing stress. Still, even if you are doing all the right things, it may take a few weeks to see tangible weight loss results from taking Mounjaro.

Understanding the potential reasons for a lack of weight loss on your Mounjaro regimen will help you adapt to them and allow you to make more informed choices about your weight loss journey and ultimately make it more effective.

How Mounjaro Works for Weight Loss

Mounjaro is a weight loss medication that focuses on promoting weight loss by reducing appetite. Mounjaro promotes weight loss with its role as a glucagon-like peptide 1 (GLP-1) agonist using the active ingredient semaglutide. This means that the medication mimics the GLP-1 hormone in the body, and by doing so, encourages the body to slow stomach emptying and reduce your appetite.

Because Mounjaro works to reduce your appetite and limit the foods that you eat, it helps to limit the number of calories you consume and lose weight. The medication also helps regulate insulin, and blood sugar levels, promoting a stronger metabolism and reduced fat storage. Although Mounjaro is formulated to promote weight loss, it’s still important to combine your Mounjaro routine with healthy lifestyle habits and other intentional steps to promote weight loss.

Potential Reasons Why You’re Not Losing Weight

There are many factors that may explain why you’re not losing weight on Mounjaro or related weight-loss medications. The following are the most common reasons for stunted weight loss progress while taking Mounjaro.

1. High Caloric Intake

A reduced appetite doesn’t guarantee weight loss—even though you may be eating less food, it’s possible that you may still be eating a significant number of calories. For example, if you are eating particularly calorie-dense foods or drinks like soda or fried foods, you are likely going to struggle to lose weight as any excess calories your body doesn’t turn into energy will be stored as fat.

Ultimately, it’s important to build a habit of healthy eating in addition to beginning your medication regimen. In your day-to-day meal planning, try to avoid overly caloric-dense foods like oily or high-sugar foods. Replacing these foods with nutrient-dense whole foods like vegetables, lean proteins, and whole grains will allow you to get the nourishment you need and stay full longer with fewer calories. Eating high-fiber, vitamin-rich foods like these will also help quell cravings for high-calorie foods and potentially limit overeating throughout the day.

2. Lack of Physical Activity

Although physical activity is not absolutely necessary for weight loss, it is an important component of it. If you’re not seeing results from a Mounjaro regimen alone, then physical activity may be the last piece of the puzzle needed to bring you real weight loss success. Regular exercise can turn food into energy and boost your metabolic health so that your body burns more calories, and fat, for energy, encouraging weight loss.

Physical activity may look different for everyone, as there are many ways to incorporate it into your daily and weekly routine. Regardless of your preferred exercises, you should aim for a blend of both cardiovascular and strength training exercises throughout the week.

You may consider incorporating some of the following activities:

  • Walking
  • Running
  • Biking
  • Hiking
  • Pilates
  • Swimming
  • Weightlifting
  • Yoga

Regardless of your weight loss goals, the Centers for Disease Control recommends about 150 minutes of moderate-intensity exercise or 75 minutes of vigorous-intensity activity for the average adult each week. If you are looking to lose weight, exercise is an especially important addition to your routine.

3. Metabolic Adaptation

Metabolic adaptation is a process where the body adjusts to a reduced calorie consumption. This is often because your basal metabolic rate (BMR) decreases along with your calorie intake for two main factors—first, eating less reduces the work of the digestive process, which means your body doesn’t have to burn as many calories to support it. Second, initial weight loss progress means your body is lighter, so your standard daily activities require less work.

The process of metabolic adaptation often leads to potential weight loss plateaus, regardless of your specific weight loss approach. To break through a potential plateau, you should consider adjusting the foods you eat to reduce your calorie intake further or increasing your physical activity levels to support an even more significant calorie deficit.

The Same or Better Weight Loss Results Without Medication

Leave the questionable medications behind you and achieve sustainable weight loss success with our customized, nutrition-forward, and medication-free programs.

4. Underlying Health Conditions

Underlying health conditions can have several potential impacts on your weight loss journey by influencing your metabolic and hormonal health. Certain medical conditions can influence your body’s process for storing and burning fat and ultimately slow your progress.

The following underlying health conditions can influence and negatively affect your weight loss efforts:

  • Hypothyroidism – An underactive thyroid can reduce your metabolic rate, reducing your body’s ability to burn calories and leading to increased potential for weight gain.
  • PCOS – Polycystic ovarian syndrome may affect your hormone balance and metabolic health, which can lead to a higher risk of weight gain.
  • Hormonal imbalances – Other hormonal imbalances caused by conditions like menopause in women or low testosterone in men can lead to an increased potential for weight gain.

If you suspect that you have underlying health conditions that may be affecting your weight loss progress, you should contact your medical provider. Your doctor is the only person who can help properly diagnose any medical conditions that may be affecting your progress and require treatment. 

5. Inconsistent Medication Use

A crucial part of your Mounjaro regimen is staying consistent. If you do not follow through with your regimen, you likely won’t see the results you’re hoping for. For success with your medication, it’s essential that you closely follow the advice and recommendations of your doctor.

An appropriate Mounjaro regimen is typically around 5 mg per week, although doctors may adjust this regimen depending on the patient. It’s important to take the medication on the same day and time each week—this will ensure that the medication stays at a consistent level in your body. Avoiding fluctuations in the medication in your body is the best for ensuring the medication can work as intended.

6. Unrealistic Expectations

If you’re not seeing the results you’ve hoped for on Mounjaro just yet, it’s possible that your expectations were too high. Weight loss often takes time and may require some patience, and you can’t expect to shed dozens of pounds in a matter of a few weeks.

Although you may see effects like a reduced appetite almost immediately after beginning your regimen, weight loss does not happen immediately. Users of Mounjaro can often expect to see tangible weight loss results in about 8 to 12 weeks—for some, it may take as long as 6 months to see noticeable results. Therefore, if you’re worried about a lack of weight loss after recently starting your regimen, you may need more time before making an accurate judgment.

Many people also expect that they will see considerable weight loss from medication alone—however, it’s not always that simple. It’s important to adjust your expectations and understand that you will also need to put some additional work in besides just taking your medication.

Adjusting Your Approach for Better Results

Many people think that taking Mounjaro alone should be enough to support a successful weight loss journey. However, a weight loss medication taken without consideration of all the other potential contributing factors will likely miss out on addressing the full potential of a weight loss journey.

When you start a Mounjaro regimen, consider making these adjustments:

  • Dietary changes – Aiming to eat nutrient-dense, low-calorie foods will support your weight loss effort by minimizing cravings and preventing you from overeating less-nourishing, fatty foods.
  • Mindful eating – Maintaining mindful eating practices like portion control, hunger cues, and emotional eating can help you sustain healthy eating habits that prevent overeating.
  • Exercise routine – Incorporating more physical activity into your daily routine can support your Mounjaro regimen by boosting your metabolic health and shedding more pounds.
  • Yoga and meditation – Daily practices like yoga and meditation can help you reduce stress levels to minimize the impact on your metabolic health and promote a successful weight loss effort.
  • Sleep and stress management – Maintaining quality sleep and taking steps to reduce stress can support a healthy hormonal balance and improve your metabolism.
  • Tracking progress – Monitoring your progress on weight loss, bodily measurements, and non-scale victories like energy levels can help you more easily recognize results and increase your confidence.

When To Talk to Your Doctor

Your doctor should remain a close point of contact throughout your medication weight loss journey. If you’re concerned about your weight loss results, they should be the first place you turn.

You should consider talking to your doctor in the following instances:

  • No progress – If you’ve given your body time to adjust to the medication and have still not seen results, it may be time to discuss an adjustment to your approach with your doctor.
  • Side effects – You should contact your doctor if you experience any unexplained side effects or new discomfort after beginning your medication regimen.

If your doctor finds your lack of progress to be abnormal, they may take a variety of approaches in response. First, they may recommend a change to your dosage or regimen. However, if that doesn’t work, your doctor may recommend an alternative approach to weight loss, such as recommending dietary changes over medication.

Consider Taking a Holistic Weight Loss Approach

If you’re not losing weight on Mounjaro, it could be for a variety of reasons, from a high calorie intake to underlying medical conditions. Ultimately, getting to the bottom of why your Mounjaro regimen may not be producing the results you’ve been hoping for requires talking to your doctor. However, if you’re looking for lasting weight loss success, you should consider bypassing medication entirely and pursuing a holistic approach to weight loss.

At re:vitalize weight loss and wellness, we offer a medication-free approach to weight loss designed to bring you sustainable results. Our Holistic Weight Loss programs and Flexible Weight Loss programs will support you in building healthy habits and incorporating more nutritious whole foods so that you can achieve lasting weight loss success. Above all else, we provide close, personalized support throughout your entire journey. Our expert weight loss coaches and board-certified nutritionists provide daily, weekly, and monthly check-ins to monitor your progress and help keep you on track. 

Schedule a virtual or in-person consultation with our team at re:vitalize today to start your weight loss journey.

Dan Lemoine

Meet the Author Dan LeMoine

Dan is passionate about helping others get healthy and reclaim their best lives. In addition to serving as re:vitalize’s CEO, Dan is a certified holistic nutritionist, with board certifications from both The American Association of Drugless Practitioners and the American Naturopathic Medical Accreditation Board. He and Dr. Abood co-authored their book, Fear No Food, which became an Amazon #1 Best Seller and #1 New Release. Dan’s thought leadership on weight loss, nutrition, and metabolic health has been featured in various outlets like Fox News, Delish.com, 247Health, Prevention, MSN, and Sports Illustrated. Originally from Ohio, Dan and his wife Danae (also a nutritionist and co-founder of re:vitalize) moved to Phoenix in 2017 to open re:vitalize’s Arizona locations.
Get Started Today

Schedule an in-person consultation at one of our Phoenix weight loss clinics or a virtual consultation to start your weight loss journey.

Schedule Your Consultation