In the age of personalized technology, from curated playlists to AI-driven recommendations, it is baffling that medicine—the discipline tasked with preserving human life—still largely adheres to a one-size-fits-all approach. For years, doctors have prescribed medications based on population averages, often overlooking a powerful tool that could transform patient care: pharmacogenomics. This field, which tailors treatments to a person’s genetic makeup, has the potential to reduce adverse drug reactions, improve therapeutic outcomes, and save billions of dollars in healthcare costs. Yet, its adoption remains frustratingly slow, with dire consequences.