Student, 19, Dies After Taking Drug Used by Millions of Americans

Key Points:

• Josephine Nasr, a 19-year-old law student from California studying in London, died from cardiac arrhythmia after taking the GLP-1 weight loss drug tirzepatide, sold under brand names Mounjaro and Zepbound.
• Nasr, who was overweight but not obese, experienced severe nausea and vomiting—a known side effect of GLP-1 drugs—on the night of her death, which likely led to dehydration and an electrolyte imbalance triggering her fatal heart arrhythmia.
• A post-mortem revealed Nasr had a congenital heart condition called myocardial bridging, which may have contributed to her death when combined with the drug-induced symptoms.
• The drug was prescribed by a U.S. doctor, and Nasr had begun taking it in summer 2025; her family found her unresponsive in her dorm bathroom after failed attempts to contact her.
• Authorities and family members emphasize Nasr's otherwise healthy status and her active, caring personality, highlighting the tragic nature of this incident linked to weight loss medication side effects.