It usually means keeping carbohydrates low enough that your body produces ketones
This prevents math errors on injection day when you're in a hurry
Nazari L, Salehpour S, Hosseini S, et al
Type 2 diabetes in adults: management NICE guideline [NG28]
Additionally, it has been shown to enhance symptoms, improve physical fitness, and lower inflammation and body weight in patients with obesity and heart failure with preserved ejection fraction (Kosiborod et al., 2023)
"It's about giving your stomach enough time to empty." The FDA warning update comes months after the European Medicines Agency issued similar recommendations over the summer, advising patients taking GLP-1s to talk to their doctors before going under anesthesia