Understanding GLP-1 Medications: How They Work and Their Role in Weight Loss

In recent years, GLP-1 medications such as Ozempic, Wegovy, and Mounjaro have garnered significant attention for their role in aiding weight loss and managing Type 2 Diabetes; most recently, research has even shown their benefit in those with heart disease. While these medications offer promising benefits, it is crucial to understand their limitations and the importance of a comprehensive approach to health and wellness.

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The Physiology and benefit of GLP-1 Medications

GLP-1 stands for glucagon-like peptide-1, a hormone produced in the gut that plays a significant role in regulating appetite (as well as cravings!) and blood glucose levels. Specifically, GLP-1 medications interact with the gut microbiome and influence the following:

  1. Appetite Regulation: GLP-1 medications mimic the action of the natural GLP-1 hormone. When these medications are introduced into the body, they bind to GLP-1 receptors in the brain, particularly in areas that control hunger and satiety. This interaction helps reduce appetite and increase feelings of fullness, leading to reduced food intake. This effect is a favorite of many as it forces one to eat less and not have as much “food noise” when deciding food options.
  2. Slowing Gastric Emptying: These medications slow down the rate at which the stomach empties food into the small intestine. This delayed gastric emptying helps prolong the feeling of fullness after eating, further aiding in appetite control and reducing overall calorie intake.
  3. Insulin Secretion: GLP-1 stimulates the pancreas to release insulin in response to food intake, helping to lower blood sugar levels. It also suppresses the release of glucagon, a hormone that increases blood sugar levels. This dual action helps maintain better glucose control, which is particularly beneficial for individuals with Type 2 Diabetes. This also reduces cravings due to the lack of up and down spikes in glucose.
  4. Reduction of Glucose Production: By inhibiting glucagon release, GLP-1 medications also reduce the liver’s production of glucose, contributing to lower blood sugar levels.

Many users of GLP-1 medications find that they experience significant weight loss, sometimes as much as 20% of their weight due to how they work in our bodies. Besides the weight loss, many find the decrease in “food noise” or the constant thinking of what to eat next to be comforting and helpful in making better, more healthy food choices.

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Short-Term vs. Long-Term Use for Weight Loss

When considering GLP-1 medications for weight loss, it’s important to understand their role in both short-term and long-term use:

Short-Term Use

In the short term, GLP-1 medications can kickstart weight loss efforts by providing immediate benefits in appetite control and blood sugar regulation. This initial phase can be particularly motivating for individuals looking to make significant lifestyle changes. Additionally, I have also had success using GLP-1 medications in those that have reached a plateau in their weight loss and/or that have a small amount of weight to lose. However, the short-term use of these medications is generally not recommended as a standalone solution. Without ongoing support and lifestyle adjustments, the weight loss achieved may not be sustainable.

Long-Term Use

For sustained weight loss and health benefits, GLP-1 medications are often used as part of a long-term treatment plan. Long-term use helps maintain the physiological benefits of appetite regulation and blood sugar control, which can be crucial for individuals with chronic conditions like obesity and Type 2 Diabetes. It is important to note that long-term use of GLP-1 medications should always be supervised by a healthcare provider to monitor effectiveness, manage side effects, and adjust dosages as needed.

“Despite their benefits, GLP-1 medications are not a cure-all solution.”

The Importance of Professional Guidance

Despite their benefits, GLP-1 medications are not a cure-all solution. Working with a healthcare provider experienced with these medications is essential. I cannot stress this enough as there are many companies popping up across the nation that profess being an expert in obesity management and that are prescribing GLP-1 medications with little follow-up. Here’s why:

  1. Personalized Care: An experienced healthcare provider can tailor treatment to your specific needs, ensuring that the medication is used safely and effectively. When working with a provider, ask what framework they utilize to develop a plan for their patients. The Obesity Medicine Association (OMA) has developed the gold standard on obesity management and set the standard for providers offering obesity management services.
  2. Monitoring Side Effects: Common side effects include nausea, vomiting, and digestive issues. Those with a history of medullary thyroid cancer and/or frequent pancreatitis are not candidates for GLP-1 medications. A healthcare provider can help manage these side effects and adjust the treatment plan as needed.
  3. Comprehensive Approach: A healthcare provider can integrate GLP-1 medication into a broader wellness plan that includes diet, exercise, and mental health support. GLP-1 medications are NOT miracle drugs and should not be treated as such.

Maintaining Lean Muscle Mass

One of the concerns with rapid weight loss is the potential loss of lean muscle mass. Loss of muscle mass is not something to take lightly, which is why I wanted to specifically separately it out in this post. Maintaining muscle mass is crucial for overall health, metabolism, and functional strength. Recent studies have shown that muscle mass is linked to longevity, meaning that the more muscle mass a person has, the more likely they are to live longer and happier. Here are some strategies to ensure you preserve muscle while using GLP-1 medications:

  1. Protein Intake: Ensure you consume enough protein to support muscle repair and growth (approximately 0.8-1g/kg/day). Include high-quality protein sources such as lean meats, fish, eggs, dairy, legumes, and plant-based proteins in your diet.
  2. Resistance Exercise: Incorporate strength training exercises into your routine at least 2-3 times a week. Resistance exercises like weight lifting, bodyweight exercises, Pilates, and resistance band workouts help build and maintain muscle mass.
  3. Balanced Nutrition: In addition to protein, ensure your diet includes a variety of nutrients to support overall health. A balanced diet will provide the vitamins and minerals necessary for muscle maintenance and energy.
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The Road to Sustainable Health

GLP-1 medications can be a valuable tool in your weight loss journey, but they should be part of a comprehensive approach that includes lifestyle changes and ongoing support. Here are some key takeaways for achieving sustainable health and weight loss:

  1. Consistency is Key: Regular exercise, balanced nutrition, and adherence to medication are crucial for long-term success.
  2. Holistic Approach: Consider your overall well-being, including mental health, stress management, and sleep, as part of your health journey.
  3. Stay Informed: Continuously educate yourself about your health, medications, and wellness strategies to make informed decisions.
  4. Healthy Eating: A balanced diet rich in whole foods, lean proteins, healthy fats, and complex carbohydrates supports overall health and complements the appetite-regulating effects of GLP-1 medications.
  5. Regular Exercise: Incorporating both aerobic and resistance exercises helps maintain muscle mass, boost metabolism, and improve cardiovascular health. This is particularly important as muscle mass can decrease with rapid weight loss if not adequately supported by exercise.
  6. Behavioral Changes: Addressing psychological and behavioral aspects of eating through counseling, mindfulness practices, or support groups can enhance the effectiveness of GLP-1 medications and contribute to long-term success.

Conclusion

While GLP-1 medications offer promising benefits for weight loss and diabetes management, they are not miracle drugs and should not be used lightly. Sustainable health and weight loss require hard work, dedication, and a holistic approach. Many times I try to utilize a natural approach prior to medications and have found that many people do well with this. By working with a knowledgeable healthcare provider and taking steps to maintain lean muscle mass, you can achieve and maintain your wellness goals. Remember, true health is a lifelong journey, and every step you take towards a healthier lifestyle is a step towards a better you.


Stay informed, stay healthy, and embrace the journey to your best self! 🌿✨

Written By: Roxanne Oliver, DNP, APRN, FNP-BC

*The information contained in this post is for information only. It does not replace routine follow-up and/or care with a certified and licensed medical provider

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