By Cari Nierenberg
For three years in a row, Sultan Kosen has been named the world's tallest living man by Guinness World Records. Interestingly, he's earned this lofty distinction at three different heights. Even more fascinating, in the last three months, the 29-year-old Turkish man has only recently stopped growing thanks to receiving state-of-the-art treatment in the U.S.
Kosen first entered the record books at 8 feet 1 inch; at his next measurement, he was listed as 8 feet 2 inches, and now he's achieved his ultimate adult height at 8 feet 3 inches. He's also in the record books for having the largest hands (11.22 inches) and largest feet (14.4 inches).
Advertise | AdChoicesKosen's extraordinary stature is a result of gigantism. He developed a pituitary tumor as a child, which caused his pituitary gland to produce an excessive amount of growth hormone.
"That tumor is not cancerous and it is not a brain tumor," says Dr. Mary Lee Vance, an endocrinologist at the University of Virginia Health System in Charlottesville, Va. "A spontaneous mutation causes the tumor, and it's not hereditary," she explains. Kosen's parents and siblings are all average height.
Vance first learned of Kosen's case and first saw him as a patient in the spring of 2010. The Discovery Channel was doing a show on Kosen as the "World's Tallest Man," and Vance, as an expert in pituitary tumors, was asked to appear on it.
She put Kosen on a new medication (he was already taking two others) to try to bring down his growth hormone levels to a normal range. But medication alone would not be enough, so Vance consulted with a neurosurgeon to explore other options.
Although his pituitary tumor was diagnosed when Kosen was 10 years old, efforts in his native Turkey and elsewhere in Europe to stop the tumor's growth were unsuccessful. He had three prior surgeries attempting to remove the tumor as well as radiation treatment, but Kosen kept growing and growing.