Who is the tallest human?
Robert Pershing Wadlow (February 22, 1918 – July 15, 1940),
according to Guinness World Records is the tallest man in medical
history for whom there is irrefutable evidence. He is often known
as the Alton Giant. Wadlow reached an unprecedented 8 ft 11.1 in
(272 cm) in height and weighed 439 lb (199 kg) at his death. His
great size and his continued growth in adulthood were due to a
tumor within his pituitary gland. He showed no indication of an end
to his growth even at the time of his death.
Leonid Stepanovich Stadnyk (Ukrainian: Леонід Степанович Стадник), (born 1971 in Zhytomyr Oblast, Ukrainian Soviet Socialist Republic, USSR) is a Ukrainian man renowned for his stature. He was formerly listed as the world's tallest living man according to Guinness World Records. On August 20, 2008, editor-in-chief of Guinness World Records, Craig Glenday, announced that the title of world's tallest man had been returned to China's Bao Xishun after Stadnyk refused to be measured under the Guinness standard guidelines which require several measurements throughout the course of 24 hours under the watchful eye of a Guinness Book representative. Guinness would then average the height readings to come up with a final official measured height.
On August 8, 2007, Guinness book's spokeswoman Amarilis Espinoza stated that in the 2008 edition of the record book, Mr Stadnyk appeared to be taller than Bao Xishun, a native of Inner Mongolia in China who stands 2.36 m (7.7 ft). Although he held the title for a few months, Stadnyk refused to be measured and was consequently denied the GWR recognition. Others have questioned the legitimacy of his record, noting that Stadnyk has never been officially measured by Guinness World Records, only by the "Ukrainian Book of Records" that says that he measures 2.57 m (8 ft 5.2 in), and that the doctor originally credited by Guinness with confirming Stadnyk's height has denied ever measuring him.