Study Reveals Limited Long-Term Benefits of GLP-1 Medications

New research suggests that while GLP-1 drugs are effective for weight loss, they may not significantly improve long-term heart and lung health, emphasizing the need for combined treatment strategies.
Recent research from the University of Virginia indicates that while GLP-1 receptor agonists are effective for significant weight loss, these medications may not provide essential long-term improvements in heart and lung functions that are crucial for sustained health. Although GLP-1 drugs help many individuals reduce body weight and manage blood sugar levels effectively, their impact on cardiorespiratory fitness (CRF), a key predictor of mortality and overall health, appears limited.
The researchers highlight that weight loss achieved through these medications often includes a notable reduction in fat-free mass, which comprises muscle tissue. Muscle loss can negatively influence physical function, posture, and overall well-being, and may increase the risk of cardiovascular disease and mortality. Patients and healthcare providers are advised to consider strategies such as exercise or nutritional interventions alongside medication to maintain muscle mass.
CRF, measured by VO2 max, reflects the efficiency of the cardiovascular and respiratory systems during exercise. It is a known indicator of mortality risk in populations with obesity, diabetes, and heart failure. Despite some improvements in heart function observed in studies, GLP-1 drugs do not convincingly enhance VO2 max, which suggests limited benefits on overall physical fitness.
The study emphasizes the importance of preserving muscle mass during weight loss treatments and calls for additional research. There is optimism that future therapies, such as monoclonal antibodies aimed at counteracting muscle loss, may improve long-term health outcomes. Meanwhile, experts recommend that patients on GLP-1 medications discuss comprehensive strategies, including exercise and nutrition, to optimize health benefits.
The findings underscore the need for a balanced approach to weight management that combines pharmaceutical and lifestyle interventions to promote not just weight loss but also overall physical and metabolic health.
Source: https://medicalxpress.com/news/2025-07-glp-drugs-key-term-health.html
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