Which US president in the 20th century had Addison's disease?
John F. Kennedy was the youngest President ever to be elected to office. He was also the youngest President at the conclusion of his term (prematurely due to his infamous assassination). His presidency was unique in many other ways too. In September 1947, he was diagnosed with Addison’s disease, a rare endocrine disorder, and was given just a year to live.
That was not the only health issue that plagued Kennedy. He was also diagnosed with hypothyroidism in 1966. He also suffered from severe chronic back pain, even while in office. His childhood had not been healthy either: he got chicken pox, measles, whooping cough, scarlet fever, and ear infections.
One can say that fortune had not been kind to Kennedy, especially when you factor in his assassination.