Scale model of world's tallest man Robert Pershing Wadlow in London street with similar-looking man eating junk food.
Robert Pershing Wadlow (February 22, 1918 – July 15, 1940) is the tallest person in history. He reached 8 ft 11.1 in (2.72 m) in height and weighed 485 lb (220 kg) at his death at age 22. His great size and his continued growth in adulthood was due to hypertrophy of his pituitary gland which results in an abnormally high level of human growth hormone. He showed no indication of an end to his growth even at the time of his death.