GLP-1s: A Dietitian's Warning on Muscle Loss

GLP-1 medications, including Ozempic and Mounjaro, offer significant benefits for individuals needing to lose weight for medical reasons. These drugs aid weight loss by mimicking fullness hormones and slowing digestion, making calorie deficits more manageable. However, experts stress that these medications must be combined with sustainable lifestyle changes, such as regular exercise and a nutritious diet, to prevent adverse health outcomes.

Neglecting nutrition and physical activity while on GLP-1s can result in severe muscle mass depletion. A dietitian based in London has observed patients in their 40s and 50s with muscle mass comparable to that of much older individuals due to a lack of focus on diet and exercise. Maintaining muscle and bone density is vital for metabolic health and mobility throughout aging.

To achieve lasting results, patients should view GLP-1s as a tool to help establish healthier habits and a better mindset around food. Without these behavioral changes, individuals may feel dependent on the medication. Dietitians play a crucial role in helping patients integrate these drugs with lifestyle modifications, ensuring that weight loss is maintained after reaching a goal weight.

Experts also advise on optimizing GLP-1 dosage. If a patient experiences difficulty eating, their dose might be too high. The ideal dosage balances effectiveness and side effects, and patients are encouraged to assess their diet before considering a dose increase. Focusing on protein intake is paramount, especially when appetite is reduced, to prevent muscle loss and support metabolic rate. Incorporating fiber, carbohydrates, and healthy fats is also essential for a well-rounded diet.