The world's tallest man may have reached his peak, thanks to treatment by researchers at the University of Virginia Medical Center. Measuring at 8-feet-3 inches, 29-year-old Sultan Kosen of Turkey is listed in the 2011 Guinness World Records at the tallest living man. Kosen visited the university in May 2010 for treatment for a disorder called acromegaly, which is usually caused by a tumor in the pituitary gland.
He was placed on a new medication that could potentially help control the production of growth hormone and stop his continued growth. And, according to university officials, doctors in Turkey say Kosen has stopped growing. (Read more Sultan Kosen stories.)