Daniel David Palmer was an American practitioner and the founder of chiropractic, a system of alternative medicine focused on diagnosing and treating mechanical disorders of the musculoskeletal system. Born on March 7, 1845, in Canada, he developed his ideas about spinal manipulation and its effects on health in the late 19th century. In 1895, Palmer performed the first chiropractic adjustment on a patient named Harvey Lillard, which he claimed restored Lillard's hearing. This event marked the beginning of the chiropractic profession, which has since grown into a widely recognized field of healthcare, with practitioners around the world.