JEDDAH — A 20-year-old youth who once weighed more than 1,000 pounds has lost more than two thirds of his weight. A picture of Khalid Al-Shaeri — once dubbed the world's heaviest teenager — before and after weight loss went viral on social media. In 2013, he weighed 1,345 pounds when he was taken by medical helicopter from his hometown Jazan to King Fahd Medical City in Riyadh for treatment at the request of the late King Abdullah. During that move, Khaled had to be transported by special crane ordered from the United States that required nearly 30 medical staff members and civil defense personnel to assist. Ever since Khaled had been on a health program to lose weight. Social media users hailed and praised the late King Abdullah for his support to save the young man. In February this year, a video showed Khaled walking with the help of a walker. Doctors who treated him said he has shed more than two thirds of his weight.