Former U.S. President Jimmy Carter announced two weeks ago that he will undergo radiation treatment for the cancerous tumors found in his brain. He was initially diagnosed with liver cancer, but as he was being treated, four melanoma spots in his brain were also discovered.
No scientific research has consistently debunked the causes of cancer, nor have scientists found unfailing cures. But the causes of Carter's diagnosis are partly thought to be rooted in his family tree. In fact, his family history with cancer strongly indicates that there is a bad gene that is being passed on, generation to generation. His brother, father and sisters were all victims of pancreatic cancer. His mother had breast cancer, which later expanded into her pancreas.
"For a long time my family was the only one on earth that had four people who have died of pancreatic cancer," he said.
In the press conference recently held at the Carter Center he added that if he could make one wish for the rest of his life it would be to see peace in the Middle East although he admits that the goal is "more discouraging than any time I remember in the last 50 years."
His 40-minute announcement speech was strikingly composed and tranquil, especially as he reflected upon himself, “I’ve had a wonderful life... I’ve had an exciting, gratifying existence. I felt surprisingly at ease [when I was diagnosed], much more than my wife was."
Jimmy Carter was the 39th U.S. president, in office between 1977 and 1981. After leaving the White House, he founded the Carter Center to promote healthcare, democracy and human rights all around the world. His exceptional post-presidency earned him the Nobel Peace Prize in 1982.
Politicians and entire communities worldwide have expressed their support and heartfelt wishes for a full recovery. Current President Obama has also issued an official statement. “Jimmy," he said "you’re as resilient as they come, and along with the rest of America, we are rooting for you.” 

(theguardian.com & The Wall Street Journal)