John F. Carroll

John F. Carroll (1932–1969) was one of 23 known people in medical history to have reached a height of 8 feet (240 cm) or more. He suffered from severe, 2-dimensional spinal curvature (Kyphoscoliosis) and acromegalic gigantism. He had a standing height of 8 ft 1⁄4 in (244 cm) on October 14, 1959, at age 27 but, according to calculations by an engineer, his height would have been 8 ft 7+3⁄4 in (264 cm), assuming normal curvature of the spine. He was later measured at 7 ft 10+1⁄2 in (240 cm) in 1968, having shrunk in stature due to his worsening spinal condition.