GLP-1 medications such as Ozempic, Wegovy, and Zepbound are highly effective for weight loss. But rapid weight loss, especially when appetite drops sharply, can include a significant amount of muscle. Protecting that muscle is one of the most important things you can do while on these medications.
When you eat much less, your body can pull from both fat and lean tissue for energy. Studies of rapid weight loss show a meaningful portion can come from muscle if protein and resistance training are not prioritized. Losing muscle can lower your resting metabolism, reduce strength, and make weight regain easier later.
The good news is that muscle loss is largely preventable with a deliberate plan. The core levers are protein, resistance training, and enough total nutrition to support both.
A prescription alone does not tell you how to hit protein targets when you can barely finish a meal, or how to keep progress measurable. This is the gap a registered dietitian fills, translating the medication into a day-to-day plan and using testing to make sure the weight coming off is the weight you want to lose.