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Indeed, GWR only knows of 10 confirmed or reliable cases in history of humans reaching 8 ft or more. Sultan first became the world's tallest living man in 2009, when he measured 246.5 cm (8 ft 1 in) in height. He took the title from Xi Shun (China, b. 1951), who measured 2.361 m (7 ft 8.95 in) in height when measured in 2005.
The world's tallest woman has died in eastern China at age 39. Chinese state media say Yao Defen died on Nov. 13 at her home in the province of Anhui. Guinness World Records in January 2010 had certified her as the world's tallest living woman, at seven-foot-seven. According to its website, Yao may still have been growing due to a portion of a tumour remaining on her pituitary gland.