[5]
Polk suffered from frail health as a child, a particular disadvantage in a frontier society. His father took him to see prominent Philadelphia physician Dr. Philip Syng Physick for urinary stones. The journey was broken off by James's severe pain, and Dr. Ephraim McDowell of Danville, Kentucky, operated to remove them. No anesthetic was available except brandy. The operation was successful, but it might have left James impotent or sterile, as he had no children. He recovered quickly and became more robust. His father offered to bring him into one of his businesses, but he wanted an education and enrolled at a Presbyterian academy in 1813.[6] He became a member of the Zion Church near his home in 1813 and enrolled in the Zion Church Academy. He then entered Bradley Academy in Murfreesboro, Tennessee, where he proved a promising student.[7][8][9]
In January 1816, Polk was admitted into the University of North Carolina at Chapel Hill as a second-semester sophomore. The Polk family had connections with the university, then a small school of about 80 students; Samuel was its land agent in Tennessee and his cousin William Polk was a trustee.