Medicine has come a long way from Hippocrates, who believed that disease was caused by an imbalance of the four humors: blood, phlegm, and black and yellow bile. We have stopped treating patients with leeches and bloodletting and have embraced new methods of diagnosis and treatment. We have mapped the human genome, resulting in gene editing, and have developed life-saving vaccines in record-breaking time. We are embarking on a new age in medicine using precision medicine, where each patient receives therapeutics unique to their genetics, epigenetics, and environmental factors. Artificial intelligence will play a greater role in healthcare but will not replace doctors but will supplement physicians in caring for one or groups of patients and even entire populations of patients. This chapter discusses the future of medicine.