11/06/2026
By Nancy Lum, RDN
GLP-1 medications such as Ozempic and Wegovy have changed the conversation around weight loss. These medications can be effective tools for reducing appetite and supporting weight reduction, but they are not magic solutions.
What GLP-1 Medications Actually Do
GLP-1 medications mimic a hormone naturally produced in the body called glucagon-like peptide-1. This hormone helps regulate appetite, insulin release, blood sugar, and fullness after eating.
Without healthy lifestyle habits in place, long-term success remains difficult.
These medications help:
• Reduce hunger
• Increase fullness
• Slow stomach emptying
• Decrease cravings
• Improve blood sugar control
While this can make eating less feel easier, it can also create new challenges.
The Risk of Muscle Loss
One of the biggest concerns with GLP-1 medications is that many people lose their desire to eat altogether. As a result, they may:
• Skip meals
• Eat too little protein
• Consume inadequate calories
• Lose muscle mass along with body fat
This is a serious issue because muscle tissue is metabolically active. Losing muscle slows metabolism and increases the likelihood of weight regain once the medication is stopped.
Weight loss without muscle preservation can ultimately work against long-term metabolic health.
Healthy Habits Must Come First
Before starting a GLP-1 medication, many individuals can benefit from first implementing foundational nutrition habits such as:
• Eating every 3–4 hours
• Including protein at every meal
• Increasing vegetables and fruit
• Staying hydrated
• Adding regular physical activity
These habits naturally support the body’s own GLP-1 production while also protecting muscle mass and metabolism.
In some cases, once these habits are consistently practiced, medication may not even be necessary.
Bariatric Surgery Principles Apply Here Too
The lifestyle habits required after bariatric surgery are very similar to the habits needed for GLP-1 medications to work effectively.
Food becomes a necessity rather than an option. Even when appetite is low, individuals may need to:
• Set reminders to eat
• Prioritize protein intake
• Maintain hydration
• Use supplementation when intake is inadequate
Without these strategies, nutrient deficiencies and muscle wasting can occur.
Supplements May Be Necessary
Because appetite is often significantly reduced on GLP-1 medications, some people may struggle to consume enough vitamins, minerals, and protein through food alone.
In these situations, supplementation may be necessary to prevent deficiencies and support overall health.
Medications Can Assist — But They Do Not Replace the Work
GLP-1 medications can be valuable tools for weight loss, but they do not remove the importance of healthy habits. Sustainable weight loss still requires:
• Consistent nutrition
• Protein intake
• Physical activity
• Meal structure
• Long-term behavior change
There is no true shortcut to lasting weight management. The most successful outcomes occur when medication is combined with lifestyle habits that support metabolism and preserve muscle health.
The goal is not simply to lose weight — it is to build a healthier body that can maintain those results long term.
By Nancy Lum, RDN
