They were designed to live on earth forever. It was not until they willfully rebelled against God that their bodies became susceptible to disease.
(‏ تكوين ١ :‏ ٣١ ؛‏ تثنية ٣٢ :‏ ٤‏ )‏ وقد صُمِّم جسداهما بالقدرة على العيش الى الابد على الارض .‏