Theodore Ryder (September 14, 1916 – March 8, 1993), often called Ted or Teddy Ryder, was, at the age of five, one of the first twelve diabetes patients in the world to be treated using insulin. When he died in 1993 at the age of 76, he became the world's first person to live 70 years with diabetes and probably the longest documented case of sustained insulin treatment in medical history. He was also the last survivor of the first twelve diabetes patients treated with insulin.[1]