Experts warn of malnutrition risks for Australians on GLP-1 weight-loss drugs

Experts warn that Australians using GLP-1 weight-loss drugs like Ozempic risk malnutrition and muscle loss due to rapid weight loss, with extreme cases potentially causing brain damage, heart problems, or death. New University of Newcastle research highlights a critical gap in tracking these health complications. The systematic review of about 50,000 adults found insufficient protein and vitamin intake can lead to deficiencies, with symptoms like fatigue and nausea overlapping common drug side effects. Cases of thiamine deficiency causing irreversible brain damage and magnesium deficiency leading to cardiac arrest have been identified, though the full extent remains unknown. Experts recommend protein-rich diets, strength training, and hydration to mitigate risks, while noting limited evidence linking GLP-1s directly to malnutrition. They call for better clinical guidelines and monitoring, as commercial food chains adapt with smaller, nutrient-dense meal options for users.