Evidence-graded answer
Does GLP-1 change taste or food preferences?
Yes, commonly. Patients frequently report aversions to previously-enjoyed foods (especially fried, very rich, or very sweet items), reduced interest in alcohol, and sometimes a metallic or "off" taste. These usually emerge in the first 4-8 weeks and may persist throughout treatment.
Mechanism overlaps with GLP-1 action on hypothalamic and limbic food-reward circuits — the same systems that drive cravings.
Strategic angle: many patients use the changed preference window to build new eating patterns that may be more durable. There's growing observational data suggesting these patterns partially persist after stopping treatment.
If taste changes are bothersome (e.g., affecting nutrition or quality of life), discuss with prescriber — sometimes a small dose reduction restores baseline taste while preserving most weight-loss benefit.