Nasser suffered from hemochromatosis, or Bronze diabetes,

http://en.wikipedia.org/wiki/Gamal_Abdel_Nasser#Death_and_Funeral
10. Death and Funeral

clipped from en.wikipedia.org Nasser died of a heart attack on September 28, 1970 at the conclusion of Cairo meeting of leaders of Arab countries regarding Israel and the Black September in Jordan. He suffered from hemochromatosis, or Bronze diabetes, a hereditary disease related to excessive iron in the body.